Computer Science MCQs – pakistanjobsupdate.com

Question #191 Exam MCQ

What does CPU stand for?

A Central Processing Unit

B Central Program Utility

C Core Processing Unit

D Computer Power Unit

✔ Correct Answer: A. Central Processing Unit

💡 Explanation: The CPU is the primary component that executes instructions in a computer.

Question #192 Exam MCQ

In computer memory, 1 Gigabyte (GB) is equal to:

A 1024 Megabytes (MB)

B 1000 Kilobytes

C 1024 Kilobytes

D 1048 Bytes

✔ Correct Answer: A. 1024 Megabytes (MB)

💡 Explanation: In binary calculation, 1 GB = 1024 MB.

Question #193 Exam MCQ

Which of the following is an example of non-volatile computer memory?

A ROM (Read Only Memory)

B RAM

C Cache Memory

D Virtual Memory

✔ Correct Answer: A. ROM (Read Only Memory)

💡 Explanation: ROM retains its stored contents even when the system is powered off.

Question #194 Exam MCQ

What does HTTP stand for in web technology?

A HyperText Transfer Protocol

B High Transfer Text Protocol

C HyperText Total Program

D Hyperlink Text Protocol

✔ Correct Answer: A. HyperText Transfer Protocol

💡 Explanation: HTTP is the foundational protocol used for data communication on the World Wide Web.

Question #195 Exam MCQ

Which computer programming language is known as the language of web browsers?

A JavaScript

B Python

C C++

D Java

✔ Correct Answer: A. JavaScript

💡 Explanation: JavaScript is the primary scripting language supported natively by all web browsers.

Question #196 Exam MCQ

What is the full form of SQL in database management?

A Structured Query Language

B Simple Query Logic

C System Query Language

D Standard Question Language

✔ Correct Answer: A. Structured Query Language

💡 Explanation: SQL is used for storing, manipulating, and retrieving data in relational databases.

Question #197 Exam MCQ

Which key combination is commonly used to Paste copied items in Windows?

A Ctrl + V

B Ctrl + C

C Ctrl + P

D Ctrl + X

✔ Correct Answer: A. Ctrl + V

💡 Explanation: Ctrl + V pastes items, while Ctrl + C copies and Ctrl + X cuts.

Question #198 Exam MCQ

The brain and central nerve center of the computer motherboard is the:

A Microprocessor / CPU

B Hard Drive

C SMPS

D CD-ROM

✔ Correct Answer: A. Microprocessor / CPU

💡 Explanation: The microprocessor handles processing, mathematical logic, and data control.

Question #199 Exam MCQ

What does IP stand for in network communication?

A Internet Protocol

B Internal Program

C Interconnect Point

D Interface Provider

✔ Correct Answer: A. Internet Protocol

💡 Explanation: Internet Protocol (IP) routes packets across network boundaries.

Question #200 Exam MCQ

Which of the following is an open-source operating system?

A Linux

B Windows 11

C macOS

D MS-DOS

✔ Correct Answer: A. Linux

💡 Explanation: Linux is a free and open-source operating system developed by Linus Torvalds.

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