What does the term 'memory latency' refer to? MCQ with Answer and Explanation

What does the term 'memory latency' refer to?
A. The delay between issuing a request and getting the data
B. The time to transfer data from memory to CPU
C. The amount of data transferred per second
D. The time to refresh memory
Answer: Option A
Solution (By JKSSB Mock Tests)
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.

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Practice More Memory and Storage Devices Questions

Question #1
In computer data organization, what does a single 'Word' represent?
A. The standard space needed to save a string character.
B. A fixed group of 8 bits.
C. The natural unit of data used by a particular CPU design (e.g., 32-bit or 64-bit).
D. A text element containing no numerical integers.

Correct Answer: Option C


Explanation:
A computer word is the standard size of data that a processor can handle and execute in a single operation, typically 32 or 64 bits modernly.

This question belongs to: Computer Memory and Storage Devices
Question #2
What is the capacity of a standard mini CD?
A. 210 MB
B. 650 MB
C. 1.4 GB
D. 700 MB

Correct Answer: Option A


Explanation:
Mini CDs (8 cm) hold about 210 MB (or 21 minutes of audio), as opposed to standard 700 MB CDs.

This question belongs to: Computer Memory and Storage Devices
Question #3
What is the rotational latency of a hard disk?
A. Time taken to read data from the disk
B. Time taken for the desired sector to rotate under the head
C. Time taken to move the head to the correct track
D. Time taken to write data to the disk

Correct Answer: Option B


Explanation:
Rotational latency is the delay caused by the time it takes for the desired sector of the disk to rotate under the read/write head. It depends on the disk's rotational speed (RPM).

This question belongs to: Computer Memory and Storage Devices