Introduction to Computer System MCQs Class 9
Introduction to Computer System MCQs Class 9
Class: CBSE Class 9
Subject: Computer Science
Section: Section 1 – Basics of Computers
Topic: Introduction to Computer System MCQs with Answers & Explanations
Board: CBSE Board Examination
Subject: Computer Science
Section: Section 1 – Basics of Computers
Topic: Introduction to Computer System MCQs with Answers & Explanations
Board: CBSE Board Examination
1. A computer system mainly consists of:
Answer: c) Hardware and Software
Hardware refers to physical components, while software provides instructions to operate them.
Hardware refers to physical components, while software provides instructions to operate them.
2. The physical components of a computer are called:
Answer: b) Hardware
Hardware includes keyboard, monitor, CPU, mouse and other tangible devices.
Hardware includes keyboard, monitor, CPU, mouse and other tangible devices.
3. Which of the following is system software?
Answer: b) Windows OS
Operating systems manage hardware and allow application programs to run.
Operating systems manage hardware and allow application programs to run.
4. The main function of input devices is to:
Answer: c) Input devices like keyboard and mouse allow users to provide data.
5. Which unit performs calculations?
Answer: a) ALU
Arithmetic Logic Unit performs arithmetic and logical operations.
Arithmetic Logic Unit performs arithmetic and logical operations.
6. The Control Unit is responsible for:
Answer: b) It directs operations of all computer components.
7. Example of application software:
Answer: b) Application software helps users perform specific tasks.
8. Which is volatile memory?
Answer: b) RAM
RAM loses stored data when power is switched off.
RAM loses stored data when power is switched off.
9. Output devices are used to:
Answer: b) Output devices display processed information.
10. Example of secondary storage:
Answer: c) Hard disk stores data permanently.
11. IPO cycle describes:
Answer: a) Input → Process → Output explains how computers work.
12. BIOS is stored in:
Answer: b) BIOS is permanent and stored in ROM.
13. Which device displays soft copy?
Answer: b) Monitor shows output on screen.
14. Microcomputer is also known as:
Answer: a) PCs are microcomputers used by individuals.
15. Cache memory is:
Answer: b) Cache is the fastest memory in a computer.
16. Information is:
Answer: b) Processed data becomes meaningful information.
17. Which is not an input device?
Answer: d) Printer is an output device.
18. Which memory stores booting instructions?
Answer: b) ROM stores start-up instructions.
19. Software is a set of:
Answer: b) Software gives instructions to hardware.
20. The main purpose of a computer system is to:
Answer: b) A computer processes data quickly and accurately.