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.

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
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   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
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   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
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   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
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   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
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   Answer: C. SRAM

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

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