BCS Software Engineering Principles 1 — Questions and Answers
Question 1: What does the SOLID acronym stand for in object-oriented design?
- Single, Open, Liskov, Interface, Dependency
- Single responsibility, Open/closed, Liskov substitution, Interface segregation, Dependency inversion (Correct answer)
- Separation, Organization, Layering, Integration, Decomposition
- Scalable, Observable, Loosely-coupled, Iterative, Distributed
Correct answer: Single responsibility, Open/closed, Liskov substitution, Interface segregation, Dependency inversion
SOLID is an acronym for five key object-oriented design principles: Single responsibility, Open/closed, Liskov substitution, Interface segregation, and Dependency inversion.
Question 2: What is the Agile software development methodology primarily focused on?
- Completing detailed documentation before coding begins
- Delivering working software in short iterations with continuous feedback (Correct answer)
- Following a strict sequential phase-by-phase process
- Maximizing the number of developers on a project
Correct answer: Delivering working software in short iterations with continuous feedback
Agile focuses on iterative development, delivering working software frequently, and responding to change over following a fixed plan.
Question 3: What is a design pattern in software engineering?
- A specific coding language syntax rule
- A reusable solution to a commonly occurring problem in software design (Correct answer)
- A mandatory coding standard imposed by a company
- A type of software testing framework
Correct answer: A reusable solution to a commonly occurring problem in software design
A design pattern is a proven, reusable template that describes how to solve a recurring design problem in a specific context within software systems.
Question 4: Which software development model follows a strict sequential phase order?
- Agile
- Scrum
- Waterfall (Correct answer)
- Extreme Programming (XP)
Correct answer: Waterfall
The Waterfall model requires each phase (requirements, design, implementation, testing, deployment) to complete before the next begins, with no iteration allowed.
Question 5: What is the purpose of version control systems like Git?
- To compile and build code automatically
- To track and manage changes to source code over time, enabling collaboration and history retrieval (Correct answer)
- To deploy applications to production servers
- To test code for bugs automatically
Correct answer: To track and manage changes to source code over time, enabling collaboration and history retrieval
Version control systems track file changes over time, enable multiple developers to collaborate, and allow reverting to previous states of the codebase.
Question 6: What is technical debt in software engineering?
- The cost of software licenses
- The future rework cost incurred by choosing a quick short-term solution over a better long-term approach (Correct answer)
- Hardware upgrade requirements
- The cost of hiring additional developers
Correct answer: The future rework cost incurred by choosing a quick short-term solution over a better long-term approach
Technical debt refers to the implied cost of future rework caused by choosing an expedient but suboptimal solution now rather than implementing a better approach that takes longer.
BCS Software Engineering Principles 1
What does the SOLID acronym stand for in object-oriented design?