Which type of memory is directly accessible by the CPU without going through the bus? MCQ with Answer and Explanation

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Which type of memory is directly accessible by the CPU without going through the bus?

A. Registers

B. Hard disk

C. RAM

D. Cache

Answer: Option A

Solution (By JKSSB Mock Tests)

Registers are internal to the CPU and are directly accessible by the CPU's arithmetic/logic unit, providing the fastest possible access.

This question belongs to: Computer Memory and Storage Devices

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Practice More Memory and Storage Devices Questions

Question #1

Which unit of storage represents exactly $2^{40}$ bytes of data?

A. 1 Terabyte

B. 1 Gigabyte

C. 1 Megabyte

D. 1 Petabyte

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Correct Answer: Option A

Explanation:
$2^{10}$ is Kilobyte, $2^{20}$ is Megabyte, $2^{30}$ is Gigabyte, and $2^{40}$ is Terabyte. Thus, $2^{40}$ bytes equals 1 Terabyte (TB).

This question belongs to: Computer Memory and Storage Devices

Question #2

Which memory technology is typically used for cache memory?

A. SRAM

B. DRAM

C. SDRAM

D. Flash

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Correct Answer: Option A

Explanation:
Cache memory is built using SRAM (Static RAM) because it is faster and does not need refreshing, though it is more expensive per bit than DRAM.

This question belongs to: Computer Memory and Storage Devices

Question #3

What is the purpose of a memory delay line?

A. To store data permanently

B. To introduce a known delay to synchronize signals

C. To increase memory speed

D. To reduce power consumption

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Correct Answer: Option B

Explanation:
Memory delay lines are used to delay signals, often in older technologies, to synchronize data paths.

This question belongs to: Computer Memory and Storage Devices

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