What is the purpose of error-correcting code (ECC) memory? MCQ with Answer and Explanation

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What is the purpose of error-correcting code (ECC) memory?

A. To detect and correct data corruption

B. To reduce power consumption

C. To increase memory capacity

D. To increase memory speed

Answer: Option A

Solution (By JKSSB Mock Tests)

ECC memory includes extra parity bits to detect and correct single-bit errors, improving data integrity, especially in servers.

This question belongs to: Computer Memory and Storage Devices

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Question #1

What does the term 'memory latency' refer to?

A. The time to transfer data from memory to CPU

B. The delay between issuing a request and getting the data

C. The amount of data transferred per second

D. The time to refresh memory

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Correct Answer: Option B

Explanation:
Memory latency is the time delay from when a memory access request is issued to when the data is available. It includes various delays like address decoding, access time, and bus latency.

This question belongs to: Computer Memory and Storage Devices

Question #2

In the context of memory, what does 'volatile' mean?

A. Memory requires power to retain data

B. Memory is permanent

C. Memory retains data without power

D. Memory cannot be written

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Correct Answer: Option A

Explanation:
Volatile memory loses its stored data when the power supply is turned off. RAM is a classic example of volatile memory.

This question belongs to: Computer Memory and Storage Devices

Question #3

Which of the following is a characteristic of a ROM chip?

A. It can be written to easily

B. It retains data without power

C. It is used for main memory

D. It is volatile

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Correct Answer: Option B

Explanation:
ROM is non-volatile, meaning it retains its contents even when power is turned off.

This question belongs to: Computer Memory and Storage Devices

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