Computer Science MCQs With Answers

Welcome to the Computer Science MCQs with Answers. In this post, we have shared Computer Science Online Test for different competitive exams. Find practice Computer Science Practice Questions with answers in Computer Tests exams here. Each question offers a chance to enhance your knowledge regarding Computer Science.

Computer Science Online Quiz

By presenting 3 options to choose from, Computer Science Quiz which cover a wide range of topics and levels of difficulty, making them adaptable to various learning objectives and preferences. You will have to read all the given answers of Computer Science Questions and Answers and click over the correct answer.

• Test Name: Computer Science MCQ Quiz Practice
• Type: Quiz Test
• Total Questions: 40
• Total Marks: 40
• Time: 40 minutes

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Computer Science Quiz

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1 / 40

What does GUI stand for in software development?

Graphical Utility Interface

General User Interaction

Graphical User Interface (correct)

2 / 40

What is the purpose of recursion in programming?

Solving problems by breaking them down into smaller subproblems (correct)

Reducing code complexity

Improving code readability

3 / 40

What does API stand for in software development?

Application Protocol Integration

Application Programming Interface (correct)

Advanced Programming Interface

4 / 40

What does HTTP/S stand for in secure web communication?

Hypertext Typing Protocol Secure

Hypertext Transfer Protocol Secure (correct)

Hypertext Terminal Protocol

5 / 40

Which data structure is typically used for implementing a priority queue?

Heap

Priority Queue (correct)

Hash Table

6 / 40

What does MVC stand for in software architecture?

Model-View-Controller (correct)

Model-View-Cache

Model-View-Component

7 / 40

What does UDP stand for in networking?

User Datagram Protocol (correct)

Unified Datagram Protocol

Universal Data Protocol

8 / 40

Which algorithm is used for finding the minimum spanning tree in a graph?

Bellman-Ford Algorithm

Prim's Algorithm (correct)

Kruskal's Algorithm

9 / 40

Which data structure allows for efficient insertion and deletion at both ends?

Stack

Doubly Linked List (correct)

Queue

10 / 40

What does SQL stand for in database management?

Sequential Query Language

Simple Query Language

Structured Query Language (correct)

11 / 40

Which data structure organizes elements in a Last In, First Out (LIFO) manner?

Heap

Stack (correct)

Queue

12 / 40

What is the purpose of a mutex in concurrent programming?

Ensures exclusive access to shared resources (correct)

Prevents deadlocks

Optimizes memory allocation

13 / 40

What is the primary purpose of a firewall in network security?

Protocol validation

Data encryption

Filtering network traffic (correct)

14 / 40

What does JVM stand for in Java programming?

Java Visual Machine

Java Validation Machine

Java Virtual Machine (correct)

15 / 40

Which sorting algorithm is not suitable for large datasets due to its O(n^2) worst-case time complexity?

Quick Sort (correct)

Bubble Sort

Insertion Sort

16 / 40

What does HTTP stand for in web technology?

Hypertext Terminal Protocol

Hypertext Typing Protocol

Hypertext Transfer Protocol (correct)

17 / 40

Which design pattern ensures a single instance of a class exists throughout the application?

Factory Method

Observer

Singleton (correct)

18 / 40

What does OOP stand for in programming?

Object Optimization Protocol

Object-Oriented Protocol

Object-Oriented Programming (correct)

19 / 40

What does RAID stand for in data storage?

Rapid Access of Information

Random Allocation of Integrated Disks

Redundant Array of Independent Disks (correct)

20 / 40

Which programming language is primarily used for developing Android applications?

Java (correct)

C#

Swift

21 / 40

Which data structure allows fast search, insert, and delete operations based on a key?

Hash Table

Heap

Binary Search Tree (correct)

22 / 40

What does XML stand for in markup language?

Extensible Markup Language (correct)

Executable Markup Language

Expressive Markup Language

23 / 40

What does TCP/IP stand for in networking?

Textual Communication Protocol

Transfer Connection Protocol

Transmission Control Protocol/Internet Protocol (correct)

24 / 40

Which data structure is typically used for implementing a FIFO (First In, First Out) queue?

Stack

Heap

Queue (correct)

25 / 40

What is the purpose of the OSI model in networking?

Provides a framework for network communication (correct)

Manages network resources

Encrypts data packets

26 / 40

Which sorting algorithm has the best time complexity in the average case?

Merge Sort

Heap Sort (correct)

Quick Sort

27 / 40

Which design pattern focuses on creating objects based on a template and deferring instantiation to subclasses?

Singleton

Factory Method (correct)

Observer

28 / 40

Which algorithm is used for traversing a binary tree in an in-order manner?

In-Order Traversal (correct)

Breadth-First Search

Depth-First Search

29 / 40

Which data structure represents a collection of elements with no specific order?

Hash Table

Queue

Set

30 / 40

Which programming language is known for its concurrency and parallelism support with actors?

Erlang

Elixir (correct)

Scala

31 / 40

Which algorithm is used for finding the shortest path in a weighted graph?

Depth-First Search

Breadth-First Search

Dijkstra's Algorithm (correct)

32 / 40

Which data structure is typically used for implementing associative arrays?

Hash Table (correct)

Stack

Linked List

33 / 40

Which encryption algorithm is commonly used for securing data transmission over the internet?

AES (Advanced Encryption Standard) (correct)

RSA (Rivest-Shamir-Adleman)

MD5 (Message Digest Algorithm 5)

34 / 40

Which data structure uses LIFO (Last In, First Out) principle?

Queue

Heap

Stack (correct)

35 / 40

Which sorting algorithm has the worst-case time complexity of O(n^2)?

Bubble Sort (correct)

Insertion Sort

Selection Sort

36 / 40

What is the purpose of a compiler in programming languages?

Manages database transactions

Converts high-level code to machine code (correct)

Executes code directly

37 / 40

Which type of join in SQL returns all records from both tables, joining records where available?

Inner Join

Left Outer Join

Full Outer Join (correct)

38 / 40

What is the primary advantage of using a linked list over an array?

Cache locality

Random access capability

Dynamic size (correct)

39 / 40

What is the main purpose of DNS in computer networks?

Encrypts network traffic

Resolves domain names to IP addresses (correct)

Ensures data integrity

40 / 40

Which programming paradigm emphasizes immutable data and declarative programming?

Functional Programming (correct)

Procedural Programming

Object-Oriented Programming

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