"Boost Your IT Aptitude: 25 Must-Know MCQs"

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1. Which of the following is the correct sequence of steps in the software development life cycle (SDLC)?

A) Planning, Coding, Testing, Design
B) Planning, Design, Coding, Testing
C) Design, Testing, Planning, Coding
D) Coding, Design, Planning, Testing

Answer: B) Planning, Design, Coding, Testing

2. Which of the following programming languages is mainly used for web development?

A) Python
B) C
C) JavaScript
D) Assembly

Answer: C) JavaScript

3. What is the time complexity of a binary search algorithm in the worst case?

A) O(n)
B) O(log n)
C) O(n^2)
D) O(n log n)

Answer: B) O(log n)

4. Which of the following is NOT an operating system?

A) Windows
B) Linux
C) Python
D) macOS

Answer: C) Python

5. What is the primary function of an operating system?

A) To run applications
B) To manage hardware and software resources
C) To provide security
D) To manage the database

Answer: B) To manage hardware and software resources

6. Which data structure uses the principle of Last In First Out (LIFO)?

A) Queue
B) Stack
C) Tree
D) Array

Answer: B) Stack

7. What does HTTP stand for?

A) Hyper Transfer Text Protocol
B) Hypertext Transfer Protocol
C) Hyperlink Text Transfer Protocol
D) Hypertext Transmission Protocol

Answer: B) Hypertext Transfer Protocol

8. In a computer, what does RAM stand for?

A) Random Access Memory
B) Read Access Memory
C) Read Only Memory
D) Random Only Memory

Answer: A) Random Access Memory

9. Which of the following is a type of database relationship?

A) One-to-one
B) One-to-many
C) Many-to-many
D) All of the above

Answer: D) All of the above

10. Which language is primarily used for Android development?

A) Java
B) Swift
C) Kotlin
D) Ruby

Answer: A) Java

11. What does the acronym SQL stand for?

A) Structured Query Language
B) Simple Query Language
C) Structured Quick Language
D) Simple Quick Language

Answer: A) Structured Query Language

12. Which of the following is an example of a version control system?

A) Git
B) Python
C) Java
D) HTML

Answer: A) Git

13. Which protocol is commonly used for sending emails?

A) FTP
B) HTTP
C) SMTP
D) SNMP

Answer: C) SMTP

14. What is the main purpose of a firewall?

A) To encrypt files
B) To prevent unauthorized access to a network
C) To store files
D) To create backups

Answer: B) To prevent unauthorized access to a network

15. Which of the following is used to ensure the confidentiality of data during transmission?

A) Firewall
B) Encryption
C) Decryption
D) Antivirus

Answer: B) Encryption

16. What does the term 'cloud computing' refer to?

A) Storing data on the cloud
B) Using networked servers to process and store data
C) Using physical disks for data storage
D) Storing files on a personal computer

Answer: B) Using networked servers to process and store data

17. Which of these is an example of an integrated development environment (IDE)?

A) Git
B) Eclipse
C) Linux
D) Ubuntu

Answer: B) Eclipse

18. Which of the following is an example of an object-oriented programming language?

A) COBOL
B) C
C) Python
D) Assembly

Answer: C) Python

19. What is the main purpose of a compiler?

A) To execute code
B) To convert high-level code to machine code
C) To debug code
D) To store code

Answer: B) To convert high-level code to machine code

20. What is the maximum number of nodes in a binary tree with 4 levels (starting from level 0)?

A) 8
B) 15
C) 16
D) 31

Answer: B) 15

21. Which of the following is a non-volatile memory?

A) RAM
B) Cache
C) ROM
D) Register

Answer: C) ROM

22. What is the full form of URL?

A) Uniform Resource Locator
B) Uniform Reliable Locator
C) Universal Resource Locator
D) Universal Reliable Locator

Answer: A) Uniform Resource Locator

23. Which of the following is an open-source web server?

A) Apache
B) IIS
C) Nginx
D) All of the above

Answer: D) All of the above

24. In computer networking, what does DNS stand for?

A) Data Network System
B) Domain Name System
C) Domain Name Service
D) Data Name System

Answer: B) Domain Name System

25. Which of the following is NOT a type of software testing?

A) Unit Testing
B) Integration Testing
C) System Testing
D) Computation Testing

Answer: D) Computation Testing

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