Components of a Computer System Quiz - CBSE Class 9 Computer Science

Free practice quiz: Components of a Computer System (CBSE Class 9 Computer Science). 19 multiple-choice questions with answers and explanations. Play online, no sign-up needed.

This CBSE Class 9 Computer Science practice quiz has 19 multiple-choice questions on Components of a Computer System, and 19 of them come with an explanation. Try the 5 sample questions below (tap an option to check yourself), then play the full quiz online. No sign-up needed.

Sample questions

1. Which component of a computer system is considered the 'brain'?

   1. Central Processing Unit (CPU)
   2. Hard Disk
   3. RAM
   4. Monitor
   Show answer

   Answer: A. Central Processing Unit (CPU)

   The CPU is considered the 'brain' of a computer as it performs all the processing tasks.

2. Which unit is responsible for arithmetic and logic operations in a computer?

   1. Control Unit
   2. Arithmetic Logic Unit (ALU)
   3. Memory
   4. Storage Unit
   Show answer

   Answer: B. Arithmetic Logic Unit (ALU)

   The ALU is responsible for performing arithmetic and logical operations in the CPU.

3. Which port is mainly used to connect a computer to a network?

   1. USB port
   2. Ethernet port
   3. HDMI port
   4. VGA port
   Show answer

   Answer: B. Ethernet port

   The Ethernet port is used for wired network connections to connect a computer to a network.

4. Which hardware component is essential for internet connection?

   1. DVD Drive
   2. Network Interface Card (NIC)
   3. Monitor
   4. Graphics Card
   Show answer

   Answer: B. Network Interface Card (NIC)

   A Network Interface Card (NIC) is essential for connecting a computer to a network or the internet.

5. Which type of memory is typically used for cache in a processor?

   1. Hard Disk
   2. ROM
   3. SRAM
   4. DRAM
   Show answer

   Answer: C. SRAM

   Static RAM (SRAM) is used for cache due to its speed, providing faster access than DRAM or hard disk storage.

More questions in this quiz

Answers and explanations are in the full quiz.

1. What does RAM stand for in a computer system?
2. Which of the following is NOT an input device?
3. What is the primary function of the motherboard in a computer system?
4. What does 'ROM' stand for, and what is its function?
5. How does a hard disk function in a computer system?
6. What is the role of the Control Unit in a CPU?
7. In a computer, which component is responsible for displaying visual output?
8. What distinguishes ROM from RAM?
9. Which term is used to measure the speed of a processor?
10. What is the function of a graphics card?
11. What does the BIOS do during the boot process?
12. What impact does increasing RAM have on a computer?
13. What distinguishes an SSD from an HDD regarding data alignment?
14. Which component determines the power supply compatibility in a system?

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