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 is the main purpose of DNS in computer networks?

Encrypts network traffic

Ensures data integrity

Resolves domain names to IP addresses (correct)

2 / 40

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

Random access capability

Dynamic size (correct)

Cache locality

3 / 40

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

Binary Search Tree (correct)

Heap

Hash Table

4 / 40

What does RAID stand for in data storage?

Redundant Array of Independent Disks (correct)

Random Allocation of Integrated Disks

Rapid Access of Information

5 / 40

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

Doubly Linked List (correct)

Stack

Queue

6 / 40

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

Hypertext Typing Protocol Secure

Hypertext Transfer Protocol Secure (correct)

Hypertext Terminal Protocol

7 / 40

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

Hash Table

Priority Queue (correct)

Heap

8 / 40

Which programming paradigm emphasizes immutable data and declarative programming?

Object-Oriented Programming

Functional Programming (correct)

Procedural Programming

9 / 40

What does SQL stand for in database management?

Structured Query Language (correct)

Sequential Query Language

Simple Query Language

10 / 40

Which data structure is typically used for implementing associative arrays?

Hash Table (correct)

Stack

Linked List

11 / 40

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

Filtering network traffic (correct)

Protocol validation

Data encryption

12 / 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)

13 / 40

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

Observer

Singleton (correct)

Factory Method

14 / 40

What does MVC stand for in software architecture?

Model-View-Component

Model-View-Controller (correct)

Model-View-Cache

15 / 40

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

Elixir (correct)

Scala

Erlang

16 / 40

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

Stack

Queue (correct)

Heap

17 / 40

What is the purpose of recursion in programming?

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

Improving code readability

Reducing code complexity

18 / 40

What is the purpose of a compiler in programming languages?

Manages database transactions

Executes code directly

Converts high-level code to machine code (correct)

19 / 40

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

Stack (correct)

Queue

Heap

20 / 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)

21 / 40

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

Stack (correct)

Queue

Heap

22 / 40

Which programming language is primarily used for developing Android applications?

Java (correct)

Swift

C#

23 / 40

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

In-Order Traversal (correct)

Depth-First Search

Breadth-First Search

24 / 40

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

Hash Table

Set

Queue

25 / 40

What does API stand for in software development?

Application Protocol Integration

Advanced Programming Interface

Application Programming Interface (correct)

26 / 40

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

Singleton

Observer

Factory Method (correct)

27 / 40

What does GUI stand for in software development?

Graphical Utility Interface

Graphical User Interface (correct)

General User Interaction

28 / 40

What does HTTP stand for in web technology?

Hypertext Transfer Protocol (correct)

Hypertext Typing Protocol

Hypertext Terminal Protocol

29 / 40

What does TCP/IP stand for in networking?

Textual Communication Protocol

Transmission Control Protocol/Internet Protocol (correct)

Transfer Connection Protocol

30 / 40

What does JVM stand for in Java programming?

Java Visual Machine

Java Validation Machine

Java Virtual Machine (correct)

31 / 40

What does XML stand for in markup language?

Executable Markup Language

Extensible Markup Language (correct)

Expressive Markup Language

32 / 40

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

Breadth-First Search

Dijkstra's Algorithm (correct)

Depth-First Search

33 / 40

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

Insertion Sort

Selection Sort

Bubble Sort (correct)

34 / 40

What does UDP stand for in networking?

Unified Datagram Protocol

User Datagram Protocol (correct)

Universal Data Protocol

35 / 40

What is the purpose of the OSI model in networking?

Provides a framework for network communication (correct)

Encrypts data packets

Manages network resources

36 / 40

What does OOP stand for in programming?

Object-Oriented Programming (correct)

Object-Oriented Protocol

Object Optimization Protocol

37 / 40

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

Quick Sort (correct)

Insertion Sort

Bubble Sort

38 / 40

What is the purpose of a mutex in concurrent programming?

Prevents deadlocks

Ensures exclusive access to shared resources (correct)

Optimizes memory allocation

39 / 40

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

Merge Sort

Quick Sort

Heap Sort (correct)

40 / 40

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

Bellman-Ford Algorithm

Prim's Algorithm (correct)

Kruskal's Algorithm

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