IEEE Computer Society Professional Software Engineering Master Certification (PSEM) — Questions and Answers

Question 1: What is a 'use case' in software requirements analysis?

A description of how a user interacts with a system to achieve a specific goal (Correct answer)
A test scenario written by QA engineers
A list of all the functions a system must perform
A diagram showing the database schema

Correct answer: A description of how a user interacts with a system to achieve a specific goal

A use case captures the interaction between an actor and a system to accomplish a particular objective.

Question 2: In software architecture, what does 'loose coupling' mean?

Services communicate only through shared memory
The system uses weak data types throughout
Components are tightly integrated and share internal state
Components have minimal dependencies on each other, making them easier to change independently (Correct answer)

Correct answer: Components have minimal dependencies on each other, making them easier to change independently

Loose coupling reduces dependencies between components so that changes in one component have minimal impact on others.

Question 3: What does the acronym 'SRS' stand for in software engineering?

System Requirements Summary
System Runtime Standards
Software Requirements Specification (Correct answer)
Software Release Specification

Correct answer: Software Requirements Specification

SRS stands for Software Requirements Specification, the primary document that captures all functional and non-functional requirements for a system.

Question 4: Iterative process describes requirements analysis.

True (Correct answer)
False

Correct answer: True

Requirements analysis is indeed an iterative process, meaning it involves repeated cycles of elicitation, analysis, specification, and validation. As stakeholders provide feedback and new insights emerge, requirements are continuously refined and clarified over time. This iterative nature helps to reduce ambiguities and ensure the final requirements accurately reflect user needs.

Question 5: What is the primary purpose of regression testing?

Test performance under load
Ensure that existing functionality still works after changes (Correct answer)
Verify security vulnerabilities
Test new features only

Correct answer: Ensure that existing functionality still works after changes

Regression testing ensures that previously working functionality has not been broken by recent code changes or new features.

Question 6: Which pattern is used to reduce the cost of creating and manipulating a large number of similar objects?

Object Pool
Flyweight (Correct answer)
Singleton
Prototype

Correct answer: Flyweight

The Flyweight pattern shares common state among many fine-grained objects to reduce memory usage.

Question 7: If there is a tight deadline for project development, one may opt for the waterfall model.

True
False (Correct answer)

Correct answer: False

The waterfall model is a linear and sequential approach to software development, requiring all requirements to be fully defined upfront. Its rigid structure makes it difficult and costly to accommodate changes or unforeseen issues that often arise under tight deadlines. Agile or iterative models are generally preferred for projects with strict time constraints due to their flexibility and adaptability.

Question 8: A group of software development approaches that create software quickly and allow for more design or change.

Traditional Process Models
Agile Processes and Traditional Process Models
None of the above
Agile Processes (Correct answer)

Correct answer: Agile Processes

Agile processes are a set of software development methodologies designed to create software quickly and adaptively. They emphasize iterative development, flexibility to changes, and rapid delivery of working software, contrasting with more rigid traditional models.

Question 9: In Agile, what is the primary purpose of a retrospective meeting?

Demo completed features to stakeholders
Estimate story points for new tasks
Reflect and improve team process (Correct answer)
Plan the next sprint backlog

Correct answer: Reflect and improve team process

A retrospective is held at the end of a sprint to identify what went well, what didn't, and how to improve the team's process.

Question 10: Which pattern separates the construction of a complex object from its representation?

Flyweight
Builder (Correct answer)
Abstract Factory
Prototype

Correct answer: Builder

The Builder pattern constructs a complex object step by step and allows the same construction process to create different representations.

Question 11: Which of the following characteristics does a good Software Requirements Specification (SRS) not have?

Initial, Repeatable, Defined, Managed, Optimizing (Correct answer)
Initial, Repeatable, Managed, Defined, Optimizing
Optimizing, Managed, Defined, Repeatable, Initial
Initial, Managed, Repeatable, Defined, Optimizing

Correct answer: Initial, Repeatable, Defined, Managed, Optimizing

The options provided (Initial, Repeatable, Defined, Managed, Optimizing) represent the five maturity levels of the Capability Maturity Model Integration (CMMI), which assesses an organization's process maturity. These are not characteristics of a Software Requirements Specification (SRS). A good SRS is typically characterized by being unambiguous, complete, consistent, verifiable, modifiable, and traceable, focusing on the document's quality rather than the development process's maturity level.

Question 12: What is the purpose of a 'requirements baseline'?

To compare current requirements with those of competing products
To establish a formally approved version of requirements against which changes are measured (Correct answer)
To define the initial rough cost estimate based on requirements volume
To set the minimum performance standards for the system

Correct answer: To establish a formally approved version of requirements against which changes are measured

A requirements baseline is a formally reviewed and agreed-upon snapshot of requirements that serves as the reference point for all future change control decisions.

Question 13: Which pattern defines a family of algorithms, encapsulates each one, and makes them interchangeable?

Strategy (Correct answer)
State
Command
Template Method

Correct answer: Strategy

The Strategy pattern lets the algorithm vary independently from the clients that use it.

Question 14: A prototype is what?

Working model of existing system.
None of the above
Mini model of the proposed system (Correct answer)
Mini model of existing system

Correct answer: Mini model of the proposed system

A prototype is a preliminary, often scaled-down, working model of a proposed system or a specific part of it. Its purpose is to demonstrate key functionalities, gather early feedback from users, and refine requirements before full-scale development. It helps visualize the system and validate design choices without investing in a complete build.

Question 15: An assessment reveals that a microservices architecture has created excessive inter-service dependencies, slowing deployments. This is an example of which anti-pattern?

Strangler Fig pattern
Spaghetti code
Big Ball of Mud
Distributed monolith (Correct answer)

Correct answer: Distributed monolith

A distributed monolith occurs when microservices are so tightly coupled they cannot be deployed independently, negating the architecture's benefits.

Question 16: What does REST stand for in the context of web API design?

Relational Entity State Transmission
Resource Entity Sharing Template
Representational State Transfer (Correct answer)
Remote Execution State Transfer

Correct answer: Representational State Transfer

REST (Representational State Transfer) is an architectural style for distributed hypermedia systems, coined by Roy Fielding in 2000.

Question 17: A phase of the software life cycle during which the interfaces between the system's component pieces are specified.

Detailed design
Interface design (Correct answer)
Implementation
Architectural design

Correct answer: Interface design

Interface design is the specific phase where the interactions and communication protocols between different components or modules of a system are defined. This ensures that separate parts of the software can effectively work together, which is a more granular focus than overall architectural or detailed design.

Question 18: In software quality, what does 'defect density' measure?

The number of defects per size unit of software (e.g., per KLOC) (Correct answer)
The speed at which defects are found
The percentage of defects fixed
The cost per defect

Correct answer: The number of defects per size unit of software (e.g., per KLOC)

Defect density is the number of defects per thousand lines of code (KLOC) or another size unit, used to assess software quality.

Question 19: What is the primary purpose of a code review?

To enforce coding style rules automatically
To track how many lines of code each developer writes
To measure developer performance for HR evaluations
To catch defects, ensure code quality, and share knowledge (Correct answer)

Correct answer: To catch defects, ensure code quality, and share knowledge

Code reviews improve software quality by identifying bugs and design issues early, and they help spread knowledge across the team.

Question 20: In the software development life cycle, which of the following is not a designated phase?

Testing
Assessment (Correct answer)
Development
Maintenance

Correct answer: Assessment

The standard phases of the Software Development Life Cycle (SDLC) typically include Requirements Gathering, Design, Implementation (Development/Coding), Testing, Deployment, and Maintenance. While assessment might occur within or after phases (e.g., risk assessment, post-implementation assessment), it is not typically listed as a distinct, standalone phase in the same way as Development, Maintenance, or Testing.

Question 21: What is the primary purpose of a software design pattern?

To enforce a specific programming language syntax
To provide reusable solutions to commonly occurring design problems (Correct answer)
To replace the need for unit testing
To document the history of code changes

Correct answer: To provide reusable solutions to commonly occurring design problems

Design patterns are proven templates that address recurring design problems, improving code reuse and maintainability.

Question 22: What, not how, should be specified in requirements.

True (Correct answer)
False

Correct answer: True

Requirements should focus on 'what' the software system needs to do, rather than 'how' it will achieve those functionalities. Specifying 'what' allows for flexibility in design and implementation, giving developers the freedom to choose the most efficient and effective technical solutions. Prematurely defining 'how' can constrain design choices and lead to less optimal solutions.

Question 23: Which of the following characteristics doesn't make for a strong Software Requirements Specification (SRS)?

Verifiable
Complete
Traceable
Ambiguous (Correct answer)

Correct answer: Ambiguous

A strong Software Requirements Specification (SRS) must be clear, precise, and unambiguous to avoid misinterpretations during development. Ambiguity in an SRS leads to confusion, rework, and potential project failures, as developers may implement features differently than intended. Therefore, an ambiguous SRS is a characteristic that *doesn't* make for a strong specification.

Question 24: The Factory Method pattern is classified under which category of design patterns?

Behavioral
Structural
Creational (Correct answer)
Architectural

Correct answer: Creational

The Factory Method pattern is a Creational pattern that defines an interface for creating objects but lets subclasses decide which class to instantiate.

Question 25: Which data structure would be most efficient for implementing an undo/redo feature in a text editor?

Queue
Stack (Correct answer)
Binary tree
Hash table

Correct answer: Stack

A stack's LIFO (Last In, First Out) behavior naturally supports undo by popping the most recent action off the top.

Question 26: Which metric measures the percentage of source code executed by a test suite?

Test coverage (code coverage) (Correct answer)
Defect density
Defect removal efficiency
Mean time to failure

Correct answer: Test coverage (code coverage)

Code coverage measures the percentage of production code that is exercised when a test suite runs, indicating how thoroughly the code is tested.

Question 27: In CI/CD pipelines, what does 'continuous delivery' mean?

Code is automatically tested and kept in a deployable state (Correct answer)
Developers integrate code multiple times per day
Infrastructure is provisioned automatically
Code is automatically deployed to production on every commit

Correct answer: Code is automatically tested and kept in a deployable state

Continuous delivery ensures code is always in a releasable state by automating build, test, and staging, but deployment to production is triggered manually.

Question 28: In database design, what does normalization primarily aim to achieve?

Maximizing query performance by denormalizing tables
Eliminating data redundancy and ensuring data integrity (Correct answer)
Distributing data across multiple servers
Encrypting sensitive columns in a table

Correct answer: Eliminating data redundancy and ensuring data integrity

Normalization organizes a database to reduce data duplication and prevent update anomalies by structuring data into related tables.

Question 29: What is the difference between a compiler and an interpreter?

A compiler runs code line by line; an interpreter translates the whole program first
An interpreter produces machine code; a compiler does not
A compiler only works with object-oriented languages
A compiler translates the whole program before execution; an interpreter executes line by line (Correct answer)

Correct answer: A compiler translates the whole program before execution; an interpreter executes line by line

Compilers translate source code entirely into machine code before execution, while interpreters execute it line by line at runtime.

Question 30: SDLC is short for

Software Design Life Cycle
Software Development Life Cycle
System Design Life Cycle
System Development Life cycle (Correct answer)

Correct answer: System Development Life cycle

SDLC is a widely recognized acronym in the field of software and systems development. It stands for System Development Life Cycle. This term refers to a structured process that outlines the stages involved in planning, creating, testing, deploying, and maintaining an information system or software application.

Question 31: What is the difference between functional and non-functional requirements?

Functional requirements cover UI; non-functional cover business logic
Functional requirements are optional; non-functional are mandatory
Functional requirements describe what a system does; non-functional describe how well it does it (Correct answer)
There is no meaningful difference between them

Correct answer: Functional requirements describe what a system does; non-functional describe how well it does it

Functional requirements define specific behaviors or functions, while non-functional requirements define quality attributes like performance, scalability, and security.

Question 32: Which of the following best describes a 'microservices' architecture?

A minimalist programming approach using as few lines of code as possible
A mobile-first design pattern for web applications
An application structured as a collection of small, independently deployable services (Correct answer)
A single large application deployed on many servers

Correct answer: An application structured as a collection of small, independently deployable services

Microservices breaks an application into small services that each own a specific business capability and communicate via APIs.

Question 33: What is a 'deadlock' in concurrent programming?

A memory leak caused by circular object references
A state where two or more threads are each waiting for resources held by the other, preventing any from proceeding (Correct answer)
An exception thrown when a thread accesses a null pointer
A situation where a thread runs indefinitely without producing output

Correct answer: A state where two or more threads are each waiting for resources held by the other, preventing any from proceeding

Deadlock occurs when processes are stuck in a circular wait, each holding a resource the other needs, so none can make progress.

Question 34: What does 'technical debt' refer to in software engineering?

Cost of hardware infrastructure upgrades
Financial loss due to a software project failure
Future rework caused by choosing quick solutions now (Correct answer)
Software licensing fees owed to vendors

Correct answer: Future rework caused by choosing quick solutions now

Technical debt represents the implied cost of future rework required when developers choose quick, easy solutions over better but more time-consuming approaches.

Question 35: Which of the following describes interactions in use case descriptions?

Product(System) and Actor (Correct answer)
Product
Use case
Actor

Correct answer: Product(System) and Actor

Use case descriptions detail the interactions between an external entity (the 'actor') and the system (the 'product') to achieve a specific goal. They describe how the actor uses the system and how the system responds, outlining the sequence of events and alternative flows. This interaction-centric view between the product and the actor is fundamental to understanding system behavior.

Question 36: Which activity in requirements engineering verifies that requirements accurately reflect stakeholder needs?

Requirements validation (Correct answer)
Requirements elicitation
Requirements implementation
Requirements specification

Correct answer: Requirements validation

Requirements validation confirms that documented requirements correctly represent what stakeholders actually need before development begins.

Question 37: Which Agile ceremony is held daily and limited to 15 minutes?

Backlog Refinement
Daily Standup (Correct answer)
Sprint Retrospective
Sprint Review

Correct answer: Daily Standup

The Daily Standup (or Daily Scrum) is a short synchronization meeting where team members share progress, plans, and blockers.

Question 38: Which HTTP method is conventionally used to update an existing resource in a RESTful API?

PUT (Correct answer)
POST
GET
DELETE

Correct answer: PUT

PUT replaces an existing resource at a specified URI with the provided representation, making it the standard for full updates in REST.

Question 39: Which architectural pattern separates an application into Model, View, and Controller components?

Layered Architecture
Microservices
Event-Driven Architecture
MVC (Correct answer)

Correct answer: MVC

MVC (Model-View-Controller) divides an application into data (Model), UI (View), and logic (Controller) to separate concerns.

Question 40: Which of the following phases in the Software Development Life Cycle (SDLC) is the most crucial?

Coding
Testing
Designing
Requirements analysis (Correct answer)

Correct answer: Requirements analysis

Requirements analysis is often considered the most crucial phase in the Software Development Life Cycle (SDLC) because it lays the foundation for the entire project. Errors or omissions in this phase are significantly more expensive and difficult to correct later in the development cycle. A clear understanding of requirements ensures that the right product is built, minimizing rework and maximizing project success.

Question 41: In software assessment, what does a 'baseline' primarily serve as?

The final version of the software
The initial project cost estimate
A list of all known defects
A performance benchmark for future comparisons (Correct answer)

Correct answer: A performance benchmark for future comparisons

A baseline is an established reference point used to measure and compare future changes or performance.

Question 42: Which version control strategy involves each developer having a full copy of the repository history?

Linear Version Control
Centralized Version Control
Lock-Based Version Control
Distributed Version Control (Correct answer)

Correct answer: Distributed Version Control

In distributed version control systems like Git, every developer has a complete local copy of the entire repository history.

Question 43: Static analysis tools assess software WITHOUT doing which of the following?

Parsing the source code
Detecting potential null pointer dereferences
Checking for coding standards
Executing the program (Correct answer)

Correct answer: Executing the program

Static analysis examines code structure and patterns without running the program, unlike dynamic analysis.

Question 44: The Software Requirement Specifications Document (SRS) is written by whom?

System Analyst
None of the above
System Tester
System Developer (Correct answer)

Correct answer: System Developer

The Software Requirements Specification (SRS) document is primarily written by a System Analyst. The System Analyst acts as a crucial bridge between the stakeholders (users, clients) and the development team, gathering, analyzing, and documenting the requirements. While developers use the SRS, their primary role is implementation, not initial specification writing.

Question 45: A system engineer collaborates with the _________ to comprehend system needs.

Future users
All of the above (Correct answer)
Customer
Stakeholders

Correct answer: All of the above

A system engineer collaborates with various stakeholders to fully comprehend system needs. This includes future users who will interact with the system, the customer who commissions the project, and other stakeholders who have an interest or influence on the system. Gathering input from all these groups ensures a comprehensive understanding of requirements and a successful system.

Question 46: Which software testing technique tests the internal workings and code paths of a system, requiring knowledge of the source code?

White-box testing (Correct answer)
Black-box testing
Smoke testing
Grey-box testing

Correct answer: White-box testing

White-box (or clear-box) testing exercises specific code paths, branches, and conditions with full knowledge of the implementation.

Question 47: During a readiness assessment before a production release, which criterion directly evaluates operational preparedness rather than software quality?

Code review approval is obtained
The feature branch is merged to main
Runbooks and rollback procedures are documented and tested (Correct answer)
All unit tests pass

Correct answer: Runbooks and rollback procedures are documented and tested

Runbooks and rollback procedures address operational readiness — the ability to run, monitor, and recover the system in production.

Question 48: In continuous testing, tests are executed:

Automatically as part of the CI/CD pipeline (Correct answer)
Once before release
Only in the production environment
Manually by QA engineers only

Correct answer: Automatically as part of the CI/CD pipeline

Continuous testing integrates automated test execution into the CI/CD pipeline so that software is tested at every stage of delivery.

Question 49: In Big O notation, what is the space complexity of a recursive Fibonacci function without memoization?

O(log n)
O(n) (Correct answer)
O(2^n)
O(1)

Correct answer: O(n)

The call stack depth reaches O(n) at most since each recursive chain goes n levels deep before returning.

Question 50: The Software Requirement Specifications Document (SRS) is written by?

None of the above
System Developer
System Tester
System Analyst (Correct answer)

Correct answer: System Analyst

The System Analyst is typically responsible for writing the Software Requirements Specification (SRS) document. They act as a bridge between stakeholders and the development team, eliciting, analyzing, and documenting requirements in a clear, concise, and unambiguous manner for all parties involved. This role ensures that the technical team understands the business needs.

Question 51: Which Agile manifesto value prioritizes 'Working software over comprehensive documentation'?

Customer collaboration over contract negotiation
Working software over comprehensive documentation (Correct answer)
Individuals and interactions over processes and tools
Responding to change over following a plan

Correct answer: Working software over comprehensive documentation

One of the four Agile Manifesto values explicitly states that working software is valued more than comprehensive documentation.

Question 52: What does an API gateway do in a distributed system?

Acts as a single entry point that routes client requests to the appropriate backend services (Correct answer)
Monitors database query performance across services
Compiles source code from multiple microservices
Stores user credentials for all backend services

Correct answer: Acts as a single entry point that routes client requests to the appropriate backend services

An API gateway serves as a reverse proxy that handles request routing, authentication, rate limiting, and load balancing for backend services.

Question 53: What is the time complexity of looking up an element in a balanced binary search tree (BST)?

O(n log n)
O(1)
O(n)
O(log n) (Correct answer)

Correct answer: O(log n)

A balanced BST halves the search space at each node, yielding O(log n) lookup time for n elements.

Question 54: What is the primary goal of requirements engineering?

To test the software against user needs
To write code that meets user expectations
To deploy software to production environments
To define and document what the software system must do (Correct answer)

Correct answer: To define and document what the software system must do

Requirements engineering aims to define and document what the system must do before design and development begin.

Question 55: Which testing technique tests the software without knowledge of its internal structure?

Glass-box testing
Black-box testing (Correct answer)
White-box testing
Gray-box testing

Correct answer: Black-box testing

Black-box testing evaluates software behavior without any knowledge of internal implementation or source code.

Question 56: The Composite pattern is most useful when you need to treat individual objects and compositions of objects:

Randomly
Uniformly (Correct answer)
Differently
Sequentially

Correct answer: Uniformly

The Composite pattern lets clients treat individual objects and compositions uniformly through a common interface.

Question 57: Which tool is commonly used for declarative infrastructure provisioning across multiple cloud providers?

Terraform (Correct answer)
Puppet
Chef
Ansible

Correct answer: Terraform

Terraform by HashiCorp is the leading IaC tool that uses a declarative language to provision and manage infrastructure across multiple cloud providers.

Question 58: Which software development methodology emphasizes responding to change over following a plan?

PRINCE2
Agile (Correct answer)
Waterfall
Six Sigma

Correct answer: Agile

The Agile Manifesto explicitly values 'responding to change over following a plan' as one of its four core values.

Question 59: Which Scrum event serves as an opportunity to inspect the Increment and adapt the Product Backlog?

Sprint Retrospective
Sprint Review (Correct answer)
Daily Scrum
Sprint Planning

Correct answer: Sprint Review

The Sprint Review is held at the end of the Sprint to inspect the Increment and gather stakeholder feedback to adapt the Product Backlog.

Question 60: What does ISTQB stand for in software testing?

Integrated Software Test Quality Base
International Software Testing Qualifications Board (Correct answer)
International Software Testing Qualification Bureau
Institute for Software Testing and Quality Benchmarks

Correct answer: International Software Testing Qualifications Board

ISTQB stands for International Software Testing Qualifications Board, the global organization for software testing certification.

Question 61: This paradigm was proposed by D. L. Parnas. A small subset of the entire system that was nonetheless a useful system had to be created and delivered to the customer. Through the entire life cycle, the procedure will iterate once more in little steps. Giving the customer a functional system as soon as possible and working increments are two benefits.

Extreme Programming
Spiral Model
Linear Sequential Model
Incremental Model (Correct answer)

Correct answer: Incremental Model

The Incremental Model, often associated with D.L. Parnas, delivers a series of functional, usable subsets of the complete system to the customer in successive increments. This approach allows for early delivery of core functionality and continuous feedback, iterating through the life cycle in small, manageable steps.

Question 62: Which of the following activities is a part of quality assurance?

Testing
Coding
Process audit (Correct answer)
Code review

Correct answer: Process audit

Quality Assurance (QA) focuses on preventing defects by ensuring that the processes used to develop software are effective and followed correctly. A process audit is a key QA activity that systematically examines whether development processes comply with established standards, procedures, and best practices, aiming to improve overall quality and prevent future issues.

Question 63: Which version control operation integrates changes from one branch into another?

Push
Clone
Merge (Correct answer)
Commit

Correct answer: Merge

Merging combines the history and changes of one branch into another, reconciling differences between them.

Question 64: Which pattern provides a way to access elements of an aggregate object sequentially without exposing its underlying representation?

Iterator (Correct answer)
Memento
Chain of Responsibility
Visitor

Correct answer: Iterator

The Iterator pattern provides a standard way to traverse a collection without exposing its internal structure.

Question 65: What does the term 'technical debt' refer to in software engineering?

Accumulated cost of shortcuts and poor design decisions made for short-term gain (Correct answer)
Money owed to software vendors for licenses
The time needed to train developers on a new codebase
The cost of hardware needed to run software

Correct answer: Accumulated cost of shortcuts and poor design decisions made for short-term gain

Technical debt represents the implied future rework caused by choosing an easy solution now instead of a better approach that would take longer.

Question 66: The design step includes the writing of test cases.

False
True (Correct answer)

Correct answer: True

Writing test cases during the design phase, or even earlier during requirements analysis, is a best practice in software engineering. This approach ensures that the system is designed with testability in mind, helps clarify requirements, and allows for the early detection of design flaws, ultimately leading to a more robust and verifiable product.

Question 67: Which design pattern is used to convert the interface of a class into another interface that clients expect?

Bridge
Strategy
Proxy
Adapter (Correct answer)

Correct answer: Adapter

The Adapter pattern acts as a bridge between two incompatible interfaces by wrapping an object.

Question 68: Which monitoring concept tracks the four key metrics: deployment frequency, lead time, change failure rate, and MTTR?

CSAT metrics
SLAS framework
ITIL metrics
DORA metrics (Correct answer)

Correct answer: DORA metrics

DORA (DevOps Research and Assessment) metrics measure software delivery performance through four key indicators that predict organizational performance.

Question 69: Which approach involves testing a system against its specification to verify it meets requirements?

Defect-based testing
Exploratory testing
Experience-based testing
Specification-based testing (Correct answer)

Correct answer: Specification-based testing

Specification-based (black-box) testing derives test cases directly from the software specification to verify functional correctness.

Question 70: In a CI/CD pipeline, what does 'CD' typically stand for?

Continuous Documentation
Continuous Delivery or Continuous Deployment (Correct answer)
Code Deployment
Configuration Drift

Correct answer: Continuous Delivery or Continuous Deployment

CD stands for Continuous Delivery (automated release preparation) or Continuous Deployment (automated release to production).

Question 71: Which assessment technique involves systematically walking through code with a group of peers to identify defects?

Formal inspection (Correct answer)
Load testing
Regression testing
Unit testing

Correct answer: Formal inspection

A formal inspection (e.g., Fagan inspection) is a structured peer review where a team walks through code to find defects.

Question 72: What is the purpose of an abstract class in object-oriented programming?

To store only static methods and constants
To define a common interface and partial implementation that subclasses must complete (Correct answer)
To prevent any other class from inheriting its properties
To create objects that cannot hold any data

Correct answer: To define a common interface and partial implementation that subclasses must complete

An abstract class provides a template with some implemented behavior and declares abstract methods that concrete subclasses are required to implement.

Question 73: During a software capability assessment, evaluators discover that a team's estimates consistently run 40% over actual effort. What root cause category does this most likely indicate?

Poor version control
Estimation process weakness (Correct answer)
Insufficient testing
Inadequate requirements

Correct answer: Estimation process weakness

Systematic over-estimation points to a flawed or immature estimation process rather than individual technical issues.

Question 74: What does CI/CD stand for in modern software delivery?

Continuous Integration / Continuous Delivery (or Deployment) (Correct answer)
Code Inspection / Code Deployment
Component Interface / Component Design
Centralized Infrastructure / Cloud Delivery

Correct answer: Continuous Integration / Continuous Delivery (or Deployment)

CI/CD automates building, testing, and deploying code changes to reduce manual effort and release risk.

Question 75: What is 'requirements traceability'?

The ability to track changes to requirements over time
A technique for prioritizing requirements by business value
The process of linking requirements to their origins and to design and test artifacts (Correct answer)
A method for estimating how many requirements a project needs

Correct answer: The process of linking requirements to their origins and to design and test artifacts

Requirements traceability links each requirement to its source and to downstream artifacts like design documents and test cases, enabling impact analysis.

Question 76: What does 'refactoring' mean in software development?

Fixing bugs identified during QA testing
Migrating a codebase to a new programming language
Adding new features to an existing codebase
Restructuring existing code without changing its external behavior to improve readability or performance (Correct answer)

Correct answer: Restructuring existing code without changing its external behavior to improve readability or performance

Refactoring improves the internal structure of code while preserving its observable behavior, reducing complexity and technical debt.

Question 77: In an agile retrospective used as a team assessment tool, the 'What went well / What to improve' format primarily aims to assess which dimension?

Individual developer skill gaps
Product feature completeness
Customer satisfaction scores
Team process and collaboration effectiveness (Correct answer)

Correct answer: Team process and collaboration effectiveness

Retrospectives assess team dynamics and process health to identify actionable improvements for the next iteration.

Question 78: A security assessment finds that user input is directly concatenated into SQL queries. Which vulnerability class does this represent?

SQL injection (Correct answer)
Insecure deserialization
Cross-site scripting (XSS)
Broken authentication

Correct answer: SQL injection

Concatenating unsanitized user input into SQL queries allows attackers to manipulate the query structure, a classic SQL injection vulnerability.

Question 79: Which performance assessment test determines how a system behaves when subjected to loads beyond its normal operating capacity?

Load testing
Smoke testing
Stress testing (Correct answer)
Soak testing

Correct answer: Stress testing

Stress testing pushes the system beyond its capacity limits to identify breaking points and observe failure behavior.

Question 80: Which of these software engineering processes is not included in software engineering?

Software specification
Software development
Software dependence (Correct answer)
Software validation

Correct answer: Software dependence

Software engineering processes typically include software specification (defining requirements), software development (designing and coding), and software validation (testing and verification). "Software dependence" is not a standard, distinct process activity within the generally accepted software engineering life cycle.

Question 81: In git, what does 'git rebase' do compared to 'git merge'?

Rebase is only used for hotfixes; merge is for feature branches
Rebase and merge are functionally identical
Rebase replays commits onto a new base, creating a linear history; merge creates a merge commit (Correct answer)
Rebase deletes the feature branch; merge keeps it

Correct answer: Rebase replays commits onto a new base, creating a linear history; merge creates a merge commit

Rebase rewrites commit history to appear as if the branch was created from the latest base, resulting in a cleaner linear history.

Question 82: What is 'exploratory testing'?

Simultaneous learning, test design, and test execution (Correct answer)
Automated test execution
Random testing without any plan
Testing only documented scenarios

Correct answer: Simultaneous learning, test design, and test execution

Exploratory testing is a simultaneous process of learning about the system, designing tests, and executing them without predefined test scripts.

Question 83: Which testing approach tests the integration between different software modules or services?

Acceptance Testing
Integration Testing (Correct answer)
Unit Testing
Static Testing

Correct answer: Integration Testing

Integration Testing verifies that different modules or services work together correctly when combined.

Question 84: A specific kind of software life cycle activity that entails assessing the value of a proposed development.

Market analysis
Domain analysis
Requirement elicitation
Feasibility (Correct answer)

Correct answer: Feasibility

Feasibility analysis is a critical early-stage activity in the software development life cycle where the viability of a proposed project is assessed. This involves evaluating technical, economic, operational, and legal factors to determine if the project is practical and worthwhile to pursue. It helps decide whether to proceed with development or abandon the idea, making it an assessment of value.

Question 85: Which sorting algorithm has an average-case time complexity of O(n log n)?

Selection Sort
Merge Sort (Correct answer)
Insertion Sort
Bubble Sort

Correct answer: Merge Sort

Merge Sort divides the array recursively and merges in sorted order, achieving O(n log n) in all cases.

Question 86: What is a 'test double' in software testing?

Two testers reviewing the same code
A test that covers two requirements
A generic term for objects that stand in for real objects during testing (Correct answer)
Running the same test twice

Correct answer: A generic term for objects that stand in for real objects during testing

A test double is a generic term for any object used in place of a real object for testing purposes, including mocks, stubs, and fakes.

Question 87: Which of the following does not describe a software feature?

Software is flexible
Software is always correct (Correct answer)
Software does not wear out
Software is not manufactured

Correct answer: Software is always correct

Software, being a product of human creation, is susceptible to defects and errors; therefore, it is not always correct. While software does not physically wear out like hardware, is not manufactured in the traditional sense, and can be flexible and adaptable, its correctness is a goal to be achieved through rigorous development and testing, not an inherent feature.

Question 88: Which HTTP status code indicates that a client request was successfully received, understood, and accepted?

201 Created
204 No Content
202 Accepted
200 OK (Correct answer)

Correct answer: 200 OK

HTTP 200 OK is the standard success response indicating the request was fulfilled without error.

Question 89: One of the myths among developers is:

A general statement of objectives from the customer is all that is needed to begin a software project
We have all the standards available, that will be sufficient to develop a program.
Changes are easy to accommodate
Once a program is written, our work is finished (Correct answer)

Correct answer: Once a program is written, our work is finished

The belief that 'Once a program is written, our work is finished' is a common myth among developers. In reality, software development is an ongoing process that includes significant post-development activities like testing, deployment, maintenance, and updates. Ignoring these crucial lifecycle phases can lead to software that is not functional, secure, or relevant over time.

Question 90: In Scrum, what is the 'Definition of Done'?

The acceptance criteria written by the product owner for a single story
The list of features planned for the next release
A shared checklist that a story must meet to be considered complete (Correct answer)
The date by which the sprint must end

Correct answer: A shared checklist that a story must meet to be considered complete

The Definition of Done is a team agreement on the quality standards a work item must satisfy before it can be marked complete.

Question 91: What is the primary intent of the Proxy design pattern?

Notify observers of state changes
Control access to another object (Correct answer)
Add new behaviors to objects
Define a skeleton algorithm

Correct answer: Control access to another object

The Proxy pattern provides a surrogate or placeholder for another object to control access to it.

Question 92: In object-oriented design, what does 'encapsulation' refer to?

Creating multiple classes from a single base class
Writing code that works with multiple data types
Bundling data and the methods that operate on that data within a single unit and restricting direct access (Correct answer)
Replacing conditional logic with polymorphism

Correct answer: Bundling data and the methods that operate on that data within a single unit and restricting direct access

Encapsulation hides internal state and implementation details behind a public interface, reducing coupling and protecting data integrity.

Question 93: Which of the following problems with conventional processes led to the development of agile methods?

None of the above
Lengthy development times - Project lengths ranging from 1 to 5 years
Waste/Duplication of effort - Much documentation is mandated, including documentation that may or may not be needed.
Both answers are correct (Correct answer)

Correct answer: Both answers are correct

Agile methods were developed to address significant problems inherent in conventional, 'heavyweight' software development processes. These issues included lengthy development times, often spanning years, and excessive, sometimes unnecessary, documentation. Agile approaches aim to mitigate these problems by promoting iterative development, flexibility, and reduced overhead.

Question 94: In object-oriented design, what does the Liskov Substitution Principle state?

Subclasses should extend but not replace base class behavior in a way that breaks correctness (Correct answer)
Each class should have only one reason to change
Depend on abstractions, not on concrete implementations
Interfaces should be client-specific and not force unnecessary methods

Correct answer: Subclasses should extend but not replace base class behavior in a way that breaks correctness

The Liskov Substitution Principle states that objects of a subclass should be substitutable for objects of the superclass without altering the correctness of the program.

Question 95: What distinguishes smoke testing from regression testing?

Smoke testing is a quick sanity check; regression testing is comprehensive (Correct answer)
They are the same type of testing
Smoke testing is detailed; regression testing is high-level
Smoke testing covers security; regression testing covers performance

Correct answer: Smoke testing is a quick sanity check; regression testing is comprehensive

Smoke testing is a quick, high-level check to verify basic functionality works before deeper testing, while regression testing is comprehensive.

Question 96: Which diagram type is most commonly used to visualize the system boundary and interactions between actors and the system?

Class diagram
Entity-relationship diagram
Sequence diagram
Use case diagram (Correct answer)

Correct answer: Use case diagram

A use case diagram shows the system boundary as a box, with actors outside it and use cases inside, illustrating all interactions at a high level.

Question 97: What is the main purpose of an API gateway in a microservices architecture?

To synchronize databases across services
To compile and deploy services automatically
To act as a single entry point that handles routing, authentication, and rate limiting (Correct answer)
To store shared configuration for all services

Correct answer: To act as a single entry point that handles routing, authentication, and rate limiting

An API gateway provides a unified entry point for clients, offloading cross-cutting concerns like authentication, logging, and rate limiting from individual services.

Question 98: Which pattern provides a simplified interface to a complex subsystem?

Chain of Responsibility
Composite
Flyweight
Facade (Correct answer)

Correct answer: Facade

The Facade pattern provides a unified, simplified interface to a set of interfaces in a subsystem.

Question 99: What format do Agile user stories typically follow?

As a [user], I want [goal] so that [benefit] (Correct answer)
Given [context] when [event] then [outcome]
The system shall [action] when [condition] so that [outcome]
Feature: [name] — Priority: [level] — Effort: [points]

Correct answer: As a [user], I want [goal] so that [benefit]

User stories follow the format 'As a [user type], I want [goal] so that [benefit]' to capture requirements from the user's perspective and express value.

Question 100: The security level for a client in the financial sector must be

Medium
Depends
High (Correct answer)
Client

Correct answer: High

For clients in the financial sector, the security level of software systems must be exceptionally high due to the sensitive nature of financial data and transactions. Robust security measures are crucial to protect against fraud, data breaches, cyberattacks, and to ensure compliance with stringent industry regulations, safeguarding both client assets and trust.

Question 101: A paradigm for the life cycle of software that creates a throwaway version.

None of the above
Prototyping Model (Correct answer)
Prototyping Model and Linear Sequential Model
Linear Sequential Model

Correct answer: Prototyping Model

The Prototyping Model is a software development paradigm where a working model (prototype) of the system is built quickly to understand requirements and test design choices. This 'throwaway' version helps clarify user needs and refine the design before committing to the full development of the final system, reducing risks and improving user satisfaction. It explicitly creates a throwaway version for early feedback.

Question 102: What is the maximum length of a Sprint in Scrum?

3 weeks
2 weeks
4 weeks (Correct answer)
6 weeks

Correct answer: 4 weeks

Scrum specifies that a Sprint is a time-box of one month or less, with one month (4 weeks) being the maximum.

Question 103: What is 'refactoring' in the context of Agile and XP?

Restructuring existing code without changing its external behavior (Correct answer)
Adding new features to existing code
Fixing bugs in production
Rewriting the entire codebase

Correct answer: Restructuring existing code without changing its external behavior

Refactoring is the process of restructuring existing code to improve readability and reduce complexity without changing its observable behavior.

Question 104: What is a 'stub' in the context of software testing?

A minimal fake implementation of a dependency used to isolate the unit under test (Correct answer)
A tool that measures test coverage
A placeholder comment in source code
A bug reported by end users

Correct answer: A minimal fake implementation of a dependency used to isolate the unit under test

A stub replaces a real dependency with a simplified version that returns predefined data, allowing testing without invoking the actual component.

Question 105: Which Agile ceremony specifically focuses on improving the team's process and collaboration?

Sprint Retrospective (Correct answer)
Daily Scrum
Sprint Planning
Sprint Review

Correct answer: Sprint Retrospective

The Sprint Retrospective is a time-boxed event where the Scrum team inspects itself and creates a plan for improvements.

Question 106: What is 'technical debt' in software engineering?

Dependencies on deprecated third-party libraries
Outstanding bug reports in a project backlog
The implied cost of rework caused by choosing a quick, easy solution instead of a better but longer-term approach (Correct answer)
The cost of purchasing developer tools and licenses

Correct answer: The implied cost of rework caused by choosing a quick, easy solution instead of a better but longer-term approach

Technical debt is the future cost of maintaining or reworking expedient but suboptimal code, analogous to financial debt that accrues interest.

Question 107: The Observer pattern is best described as which type of relationship?

One-to-one
Many-to-many
One-to-many (Correct answer)
Many-to-one

Correct answer: One-to-many

The Observer pattern defines a one-to-many dependency so that when one object changes state, all its dependents are notified automatically.

Question 108: In Test-Driven Development (TDD), what is the correct order of steps?

Write code, refactor, write test
Write code, write test, refactor
Write test, write code, refactor (Correct answer)
Refactor, write test, write code

Correct answer: Write test, write code, refactor

TDD follows the Red-Green-Refactor cycle: write a failing test first, write code to pass it, then refactor.

Question 109: Which of the following is an example of a functional requirement?

The system must respond within 2 seconds
The system must allow users to reset their password via email (Correct answer)
The system must use TLS 1.3 for all communications
The system must be available 99.9% of the time

Correct answer: The system must allow users to reset their password via email

A functional requirement describes a specific behavior or function the system must perform, such as enabling password resets via email.

Question 110: Which pattern allows an object to alter its behavior when its internal state changes, appearing to change its class?

Strategy
Iterator
Interpreter
State (Correct answer)

Correct answer: State

The State pattern encapsulates state-dependent behavior in separate state objects and delegates behavior to the current state.

Question 111: The waterfall model is inappropriate for?

None of the above
Small Projects
Accommodating change (Correct answer)
Complex Projects

Correct answer: Accommodating change

The waterfall model follows a strict, linear progression where each phase must be completed before the next begins. This rigid structure makes it highly unsuitable for projects where requirements are likely to change, as accommodating modifications in later stages can be extremely costly and time-consuming, often requiring extensive rework of previous phases.

Question 112: In requirements engineering, what are 'quality attributes' (sometimes called '-ilities')?

Measurements of how complete the requirements document is
Metrics measuring the number of defects per line of code
Acceptance criteria lists for functional requirements
Non-functional characteristics describing how well the system performs its functions (Correct answer)

Correct answer: Non-functional characteristics describing how well the system performs its functions

Quality attributes like scalability, maintainability, and reliability are non-functional characteristics that describe system performance qualities rather than specific behaviors.

Question 113: What does DRY stand for in software engineering principles?

Don't Repeat Yourself (Correct answer)
Dynamic Runtime Yardstick
Define, Refactor, Yield
Distribute, Reuse, Yield

Correct answer: Don't Repeat Yourself

DRY (Don't Repeat Yourself) states that every piece of knowledge should have a single, unambiguous representation in a system.

Question 114: Which SOLID principle states that a class should have only one reason to change?

Liskov Substitution Principle
Open/Closed Principle
Interface Segregation Principle
Single Responsibility Principle (Correct answer)

Correct answer: Single Responsibility Principle

The Single Responsibility Principle (SRP) dictates that a class should encapsulate only one concern, so only one type of change would require it to be modified.

Question 115: Which of the following best describes 'continuous integration' (CI)?

Writing tests before writing production code
Frequently merging code changes into a shared repository and running automated builds and tests (Correct answer)
Deploying code to production automatically after every commit
Integrating third-party APIs into the codebase regularly

Correct answer: Frequently merging code changes into a shared repository and running automated builds and tests

CI is the practice of automatically building and testing code every time a developer pushes changes, catching integration errors early.

Question 116: What is the role of a 'build system' in software development?

Managing team communication and task assignment
Automating the compilation, linking, and packaging of source code into deployable artifacts (Correct answer)
Providing a code editor with syntax highlighting
Tracking bugs and feature requests

Correct answer: Automating the compilation, linking, and packaging of source code into deployable artifacts

A build system automates transforming source code into executable programs, including compilation, dependency resolution, and packaging.

Question 117: Which type of testing validates software from the end-user's perspective based on business requirements?

Unit Testing
Integration Testing
White-box Testing
User Acceptance Testing (UAT) (Correct answer)

Correct answer: User Acceptance Testing (UAT)

User Acceptance Testing (UAT) verifies that the software meets business requirements and is ready for delivery from the end-user's perspective.

Question 118: Which type of testing evaluates how a system performs under expected and peak load conditions?

Load testing (Correct answer)
Stress testing
Spike testing
Soak testing

Correct answer: Load testing

Load testing evaluates system behavior under expected and peak load conditions to ensure performance requirements are met.

Question 119: Which requirements elicitation method involves creating a working model of the system to gather user feedback?

Prototyping (Correct answer)
Document analysis
Interviews
Brainstorming

Correct answer: Prototyping

Prototyping creates a preliminary working version of the system to help users visualize, evaluate, and refine their requirements.

Question 120: The person who is entirely responsible for the project's success and is answerable to the sponsors and stakeholders.

Systems Analyst
Project Manager (Correct answer)
Project Leader
End-User

Correct answer: Project Manager

The Project Manager is the central figure responsible for planning, executing, and closing a project, ensuring it meets its objectives within scope, time, and budget. They are accountable to sponsors and stakeholders for the overall success or failure of the project, managing resources, risks, and communication throughout its lifecycle. Their leadership is critical for project delivery.

Question 121: Which metric measures the average number of defects found per lines of code during a code review?

Code churn
Defect density (Correct answer)
Cyclomatic complexity
Test coverage

Correct answer: Defect density

Defect density is calculated as the number of defects divided by the size of the software (usually per KLOC).

Question 122: Which type of testing verifies that individual units or components of a software system work correctly in isolation?

Integration Testing
System Testing
Unit Testing (Correct answer)
Acceptance Testing

Correct answer: Unit Testing

Unit Testing tests individual components or functions in isolation to verify that each unit performs as expected.

Question 123: What is the purpose of environment variables in software deployment?

To define CSS styling for different environments
To track user session data
To externalize configuration so the same code runs in dev, staging, and production (Correct answer)
To store compiled binary files

Correct answer: To externalize configuration so the same code runs in dev, staging, and production

Environment variables decouple configuration from code, enabling the same build artifact to behave differently per environment.

Question 124: What is a 'stakeholder' in the context of requirements engineering?

The project manager who approves requirements documents
An investor who provides funding for the project
The lead developer responsible for implementing requirements
Any person or organization with an interest in or affected by the system (Correct answer)

Correct answer: Any person or organization with an interest in or affected by the system

A stakeholder is any person, group, or organization that has an interest in the system or is affected by its development, deployment, or operation.

Question 125: A risk assessment matrix plots risks by severity and what other dimension?

Cost to fix
Number of stakeholders affected
Time to detect
Likelihood of occurrence (Correct answer)

Correct answer: Likelihood of occurrence

A risk matrix maps risks on two axes: severity (impact) and likelihood (probability of occurrence).

Question 126: Which HTTP status code indicates that a resource was successfully created?

201 Created (Correct answer)
202 Accepted
204 No Content
200 OK

Correct answer: 201 Created

HTTP 201 Created is returned when a request has succeeded and a new resource has been created as a result.

Question 127: Which software development model is best suited for projects where requirements are well-understood and unlikely to change?

Waterfall (Correct answer)
Scrum
Agile
Spiral

Correct answer: Waterfall

The Waterfall model works best when requirements are stable and fully defined upfront, following a strict sequential flow.

Question 128: In object-oriented programming, what is encapsulation?

Defining a class that cannot be instantiated
Creating multiple classes with the same method name
Bundling data and methods that operate on that data within a single unit, restricting direct access (Correct answer)
Inheriting properties from a parent class

Correct answer: Bundling data and methods that operate on that data within a single unit, restricting direct access

Encapsulation hides an object's internal state and exposes only what is necessary through a public interface.

Question 129: Which testing technique divides inputs into groups where all values are expected to behave the same?

Decision table testing
Equivalence partitioning (Correct answer)
State transition testing
Boundary value analysis

Correct answer: Equivalence partitioning

Equivalence Partitioning divides input data into valid and invalid partitions where all values in a partition are expected to behave equivalently.

Question 130: Which of the following is the suitable software for creating a system for a client whose requirements are always changing?

Iterative (Correct answer)
Maintenance
Incremental
Waterfall

Correct answer: Iterative

Iterative software development models are highly suitable for projects with evolving or uncertain requirements because they allow for continuous feedback and adaptation. The software is developed in small, repeating cycles, enabling the client to provide input and changes to be incorporated throughout the development process, rather than being locked into initial specifications.

Question 131: Which metric measures the percentage of source code executed during testing?

Mean Time to Failure
Defect Density
Halstead Volume
Code Coverage (Correct answer)

Correct answer: Code Coverage

Code coverage measures the proportion of source code lines, branches, or paths that are executed by a test suite.

Question 132: What is 'boundary value analysis' in software testing?

Testing all possible inputs
Testing at the limits of input domains (Correct answer)
Testing random inputs
Testing invalid inputs only

Correct answer: Testing at the limits of input domains

Boundary Value Analysis tests values at the edges of input partitions, as defects are most likely to occur at boundary conditions.

Question 133: An independent verification and validation (IV&V) assessment differs from standard V&V primarily because it is performed by whom?

An automated CI/CD pipeline
End users of the product
A party organizationally independent from the development team (Correct answer)
The same team that built the software

Correct answer: A party organizationally independent from the development team

IV&V requires an independent third party to perform verification and validation, ensuring objectivity and avoiding conflicts of interest.

Question 134: What is a 'requirements conflict' and how is it typically resolved?

A security vulnerability identified in requirements, resolved by the security team
Two or more requirements that cannot all be satisfied simultaneously, resolved through stakeholder negotiation (Correct answer)
An ambiguous requirement, resolved by adding more technical detail
A technical error in the requirements document, resolved by the lead developer

Correct answer: Two or more requirements that cannot all be satisfied simultaneously, resolved through stakeholder negotiation

Requirements conflicts occur when two or more requirements cannot be simultaneously satisfied; resolution requires negotiation with stakeholders to prioritize or compromise.

Question 135: The Mediator pattern reduces dependencies between objects by:

Centralizing communication (Correct answer)
Delegating responsibilities
Hiding implementation
Cloning objects

Correct answer: Centralizing communication

The Mediator pattern defines an object that encapsulates how a set of objects interact, promoting loose coupling.

Question 136: Which type of requirement specifies constraints on how a system must operate, such as performance and security?

Domain requirements
Business requirements
Functional requirements
Non-functional requirements (Correct answer)

Correct answer: Non-functional requirements

Non-functional requirements specify quality attributes and constraints like performance, security, and scalability rather than specific system behaviors.

Question 137: What is a 'stub' in the context of software testing?

A component that provides predefined responses to calls (Correct answer)
A performance bottleneck
A type of regression test
An incomplete test case

Correct answer: A component that provides predefined responses to calls

A stub is a test double that provides predefined answers to calls made during the test, simulating the behavior of dependencies.

Question 138: In asymptotic analysis, what does O(1) space complexity mean for an algorithm?

The algorithm uses no memory at all
The algorithm runs in constant time
The algorithm allocates exactly one variable
The algorithm's memory usage is constant regardless of input size (Correct answer)

Correct answer: The algorithm's memory usage is constant regardless of input size

O(1) space complexity means the additional memory the algorithm requires does not grow with the size of the input.

Question 139: Which two models' components were combined to create the incremental model?

Software can be custom built or custom build.
Software is developed or engineered; it is not manufactured in the classical sense. (Correct answer)
Software doesn’t “ wear out ”
Software can be custom built or custom build.

Correct answer: Software is developed or engineered; it is not manufactured in the classical sense.

This statement highlights a fundamental characteristic of software: it is engineered and developed, not manufactured in the classical sense like physical goods. Unlike hardware, software doesn't physically 'wear out,' but it can degrade due to changes, bugs, or lack of maintenance. This distinction is crucial for understanding software's unique properties and development challenges.

Question 140: In a requirements document, what is the distinction between 'shall' and 'should'?

'Shall' indicates a mandatory requirement while 'should' indicates a desirable but optional one (Correct answer)
Both terms are interchangeable in requirements documentation
'Shall' applies to functional requirements and 'should' to non-functional ones
'Shall' indicates optional features while 'should' indicates mandatory ones

Correct answer: 'Shall' indicates a mandatory requirement while 'should' indicates a desirable but optional one

In requirements documentation, 'shall' denotes a mandatory requirement while 'should' denotes something desirable but not strictly required.

Question 141: In software architecture, what does a microservices architecture emphasize?

One large deployable application unit
Small, independently deployable services (Correct answer)
Shared global state across all components
Single programming language for all services

Correct answer: Small, independently deployable services

Microservices architecture structures an application as a collection of small, loosely coupled services that can be deployed and scaled independently.

Question 142: Which type of testing verifies that individual components of a software application work correctly in isolation?

Unit testing (Correct answer)
Integration testing
System testing
Acceptance testing

Correct answer: Unit testing

Unit testing focuses on verifying the smallest testable parts of an application independently from the rest of the system.

Question 143: Choosing a model to analyze while placing a restaurant order for a plate

Iterative
Maintenance
Incremental
Waterfall (Correct answer)

Correct answer: Waterfall

Ordering a plate at a restaurant is a straightforward process with well-defined, stable requirements and a clear, sequential flow (order, prepare, serve). The waterfall model, with its linear and predictable stages, is well-suited for such small, simple projects where all requirements are known and unlikely to change upfront.

Question 144: What number of phases does Scrum have?

2
4
3 (Correct answer)
Scrum is an agile method which means it does not have phases

Correct answer: 3

Scrum, an agile framework, is structured around iterative cycles called sprints. While it doesn't have 'phases' in the traditional sequential sense, its core components are often grouped into three main categories: the three primary roles (Product Owner, Scrum Master, Development Team), the three main artifacts (Product Backlog, Sprint Backlog, Increment), and the iterative process of planning, execution, and review within each sprint.

Question 145: What is the difference between verification and validation in software quality assurance?

Verification uses black-box testing; validation uses white-box testing
Verification tests functionality; validation tests performance
Verification is done by clients; validation is done by developers
Verification checks if the product is built right; validation checks if the right product was built (Correct answer)

Correct answer: Verification checks if the product is built right; validation checks if the right product was built

Verification ensures the product meets its specification ('built right'), while validation ensures the product meets the actual user needs ('right product built').

Question 146: What is 'canary deployment'?

Reverting to a previous version
Rolling out a new version to a small subset of users before full deployment (Correct answer)
A deployment that requires canary testing tools
Deploying to all servers simultaneously

Correct answer: Rolling out a new version to a small subset of users before full deployment

Canary deployment gradually rolls out a new version to a small percentage of users first, monitoring for issues before expanding to all users.

Question 147: What is a 'use case' in requirements engineering?

A design pattern for organizing code modules
A test case used to verify software behavior
A scenario describing how a user interacts with the system to achieve a goal (Correct answer)
A description of how the system is implemented internally

Correct answer: A scenario describing how a user interacts with the system to achieve a goal

A use case describes an interaction between a user (actor) and the system to accomplish a specific goal.

Question 148: What are the dependability's four dimensions?

Security, Safety, Testability, Usability
Availability, Reliability, Maintainability, Security
Usability, Reliability, Security, Flexibility
Availability, Reliability, Security, Safety (Correct answer)

Correct answer: Availability, Reliability, Security, Safety

Dependability in software engineering refers to the trustworthiness of a system. Its four key dimensions are Availability (readiness for use), Reliability (correct operation over time), Security (protection against unauthorized access/harm), and Safety (prevention of harm to users or environment).

Question 149: What is the primary purpose of a software configuration management (SCM) system?

Automate deployment to production servers
Generate automated documentation from code
Monitor application runtime performance
Track and control changes to software artifacts (Correct answer)

Correct answer: Track and control changes to software artifacts

SCM systems track and control changes to software artifacts such as source code, configuration files, and documentation throughout the development lifecycle.

Question 150: Which Scrum artifact represents an ordered list of everything that might be needed in the product?

Increment
Sprint Backlog
Product Backlog (Correct answer)
Definition of Done

Correct answer: Product Backlog

The Product Backlog is an ordered list of everything that is known to be needed in the product, managed by the Product Owner.

Question 151: What is 'Big O notation' used to express?

The number of bugs in a codebase
The asymptotic time or space complexity of an algorithm (Correct answer)
The size of the development team needed
The percentage of code covered by tests

Correct answer: The asymptotic time or space complexity of an algorithm

Big O notation describes how an algorithm's runtime or memory usage grows relative to the size of its input.

Question 152: Which design pattern ensures a class has only one instance and provides a global point of access to it?

Factory
Singleton (Correct answer)
Decorator
Observer

Correct answer: Singleton

The Singleton pattern restricts instantiation of a class to a single object and provides a global access point.

Question 153: What does 'velocity' measure in Agile development?

Team speed in miles per hour
Code quality
Amount of work completed per sprint (Correct answer)
Number of bugs fixed

Correct answer: Amount of work completed per sprint

Velocity measures the amount of work (usually in story points) a team completes during a single Sprint.

Question 154: In Scrum, what is the role of the Product Owner?

Approve all pull requests before code is merged
Manage team velocity and assign tasks to developers
Facilitate daily standups and remove impediments
Prioritize the product backlog and represent stakeholder interests (Correct answer)

Correct answer: Prioritize the product backlog and represent stakeholder interests

The Product Owner is responsible for maximizing the product's value by managing and prioritizing the product backlog and representing stakeholders' interests.

Question 155: Which GoF pattern category does the Bridge pattern belong to?

Creational
Architectural
Structural (Correct answer)
Behavioral

Correct answer: Structural

The Bridge pattern is a Structural pattern that decouples an abstraction from its implementation so the two can vary independently.

Question 156: Which principle in SOLID design states that a class should have only one reason to change?

Open/Closed Principle
Single Responsibility Principle (Correct answer)
Liskov Substitution Principle
Interface Segregation Principle

Correct answer: Single Responsibility Principle

The Single Responsibility Principle (SRP) states each class should encapsulate only one aspect of functionality, reducing coupling.

Question 157: Program of the highest caliber must be adhered to

Coding method
Testing methodology
S/w dev method (Correct answer)
Design method

Correct answer: S/w dev method

To achieve the highest caliber program, adherence to a well-defined software development methodology (S/w dev method) is paramount. This encompasses a structured approach to all phases, from requirements gathering to maintenance, ensuring consistency, quality control, and the application of best practices throughout the entire development lifecycle.

Question 158: What is cyclomatic complexity primarily used to measure?

Number of logical paths through code (Correct answer)
Database query efficiency
Memory usage of a program
Class hierarchy depth

Correct answer: Number of logical paths through code

Cyclomatic complexity measures the number of linearly independent paths through a program's source code, indicating its testability and maintainability.

Question 159: The two dimensions of the spiral model are _ and .

diagonal, angular
radial, perpendicular
diagonal, perpendicular
radial, angular (Correct answer)

Correct answer: radial, angular

The Spiral Model is graphically represented as a spiral with two main dimensions. The radial dimension represents the cumulative cost of the project, increasing with each loop. The angular dimension represents the progress made through the four phases (objectives setting, risk assessment, development and validation, planning the next phase) of each iteration.

Question 160: What is a 'race condition' in concurrent software?

A deadlock between two competing processes
A performance benchmark comparing two algorithms
A scheduling algorithm that prioritizes faster processes
A bug that occurs when the outcome depends on the unpredictable timing of multiple threads (Correct answer)

Correct answer: A bug that occurs when the outcome depends on the unpredictable timing of multiple threads

A race condition occurs when two or more threads access shared data simultaneously and the result depends on which one executes first.

IEEE Computer Society Professional Software Engineering Master Certification (PSEM)

The IEEE CS PSEM certification validates mastery of software engineering principles and practices defined in the SWEBOK, covering software requirements, design, construction, testing, quality, process, and management across 11+ knowledge areas.

160

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180 min

Time Limit

70%

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