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

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

Observer

Singleton

Factory Method (correct)

2 / 40

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

Random access capability

Cache locality

Dynamic size (correct)

3 / 40

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

Insertion Sort

Selection Sort

Bubble Sort (correct)

4 / 40

What does TCP/IP stand for in networking?

Textual Communication Protocol

Transfer Connection Protocol

Transmission Control Protocol/Internet Protocol (correct)

5 / 40

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

Hash Table

Heap

Binary Search Tree (correct)

6 / 40

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

Erlang

Elixir (correct)

Scala

7 / 40

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

Queue

Doubly Linked List (correct)

Stack

8 / 40

What does SQL stand for in database management?

Sequential Query Language

Structured Query Language (correct)

Simple Query Language

9 / 40

What does OOP stand for in programming?

Object-Oriented Protocol

Object-Oriented Programming (correct)

Object Optimization Protocol

10 / 40

What does MVC stand for in software architecture?

Model-View-Component

Model-View-Cache

Model-View-Controller (correct)

11 / 40

What does RAID stand for in data storage?

Redundant Array of Independent Disks (correct)

Rapid Access of Information

Random Allocation of Integrated Disks

12 / 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)

13 / 40

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

Heap

Hash Table

Priority Queue (correct)

14 / 40

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

Bubble Sort

Insertion Sort

Quick Sort (correct)

15 / 40

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

MD5 (Message Digest Algorithm 5)

AES (Advanced Encryption Standard) (correct)

RSA (Rivest-Shamir-Adleman)

16 / 40

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

Filtering network traffic (correct)

Data encryption

Protocol validation

17 / 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)

18 / 40

What is the purpose of a mutex in concurrent programming?

Optimizes memory allocation

Ensures exclusive access to shared resources (correct)

Prevents deadlocks

19 / 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

20 / 40

What is the purpose of the OSI model in networking?

Encrypts data packets

Provides a framework for network communication (correct)

Manages network resources

21 / 40

What does JVM stand for in Java programming?

Java Visual Machine

Java Virtual Machine (correct)

Java Validation Machine

22 / 40

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

Set

Queue

Hash Table

23 / 40

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

Stack

Heap

Queue (correct)

24 / 40

What does HTTP stand for in web technology?

Hypertext Typing Protocol

Hypertext Terminal Protocol

Hypertext Transfer Protocol (correct)

25 / 40

What does GUI stand for in software development?

Graphical User Interface (correct)

Graphical Utility Interface

General User Interaction

26 / 40

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

Hypertext Typing Protocol Secure

Hypertext Transfer Protocol Secure (correct)

Hypertext Terminal Protocol

27 / 40

What does XML stand for in markup language?

Executable Markup Language

Extensible Markup Language (correct)

Expressive Markup Language

28 / 40

What does API stand for in software development?

Application Protocol Integration

Application Programming Interface (correct)

Advanced Programming Interface

29 / 40

Which data structure is typically used for implementing associative arrays?

Hash Table (correct)

Stack

Linked List

30 / 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

31 / 40

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

Queue

Heap

Stack (correct)

32 / 40

Which programming paradigm emphasizes immutable data and declarative programming?

Object-Oriented Programming

Procedural Programming

Functional Programming (correct)

33 / 40

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

Dijkstra's Algorithm (correct)

Breadth-First Search

Depth-First Search

34 / 40

What is the main purpose of DNS in computer networks?

Encrypts network traffic

Ensures data integrity

Resolves domain names to IP addresses (correct)

35 / 40

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

Merge Sort

Quick Sort

Heap Sort (correct)

36 / 40

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

Singleton (correct)

Factory Method

Observer

37 / 40

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

Queue

Heap

Stack (correct)

38 / 40

Which programming language is primarily used for developing Android applications?

C#

Java (correct)

Swift

39 / 40

What does UDP stand for in networking?

Universal Data Protocol

User Datagram Protocol (correct)

Unified Datagram Protocol

40 / 40

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

Kruskal's Algorithm

Prim's Algorithm (correct)

Bellman-Ford Algorithm

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