Computer Science Programming & Software Development

Question 1

Which programming paradigm focuses on objects and their interactions?

Accepted Answer

Object-oriented programming (OOP)

Answer

Object-oriented programming (OOP) is a paradigm centered around the concept of 'objects,' which are instances of classes. These objects encapsulate data (attributes) and behavior (methods) and interact with each other to perform tasks. Key principles like encapsulation, inheritance, and polymorphism define this approach, making it suitable for designing complex, modular systems.

Question 2

Which data type is used to store a sequence of characters in most programming languages?

Accepted Answer

String

Answer

A string is a fundamental data type used to represent a sequence of characters, such as letters, numbers, and symbols. In most programming languages, strings are immutable and are enclosed in quotation marks. They are essential for handling text-based data, from user input to file content.

Question 3

What is the main purpose of a compiler?

Accepted Answer

To convert source code into machine code

Answer

A compiler is a program that translates source code written in a high-level programming language (like C++ or Java) into machine code or an intermediate code. This machine code is a low-level language that a computer's processor can directly understand and execute. The compilation process typically involves lexical analysis, parsing, semantic analysis, and code generation.

Question 4

Which software development methodology emphasizes short iterative cycles and adaptability?

Accepted Answer

Agile development

Answer

Agile development is an iterative and incremental approach to software development that emphasizes flexibility, collaboration, and rapid delivery. It breaks projects into short cycles called sprints, allowing teams to adapt to changing requirements and deliver working software frequently. This contrasts with traditional linear models like Waterfall, which are less adaptable.

Question 5

Which of the following best describes an API (Application Programming Interface)?

Accepted Answer

A set of functions and protocols for communication

Answer

An API, or Application Programming Interface, defines a set of rules, routines, and protocols that allow different software applications to communicate and interact with each other. It specifies how software components should interact, enabling developers to build complex applications by leveraging existing functionalities without needing to understand their internal implementation. APIs are crucial for integrating services and building interconnected systems.

(CS) Computer Science Practice Test

(CS) Computer Science Practice Test

Computer Science Programming & Software Development