The time it takes for a targeted data sector on a hard drive platter to rotate under the read/write head is called: MCQ with Answer and Explanation

The time it takes for a targeted data sector on a hard drive platter to rotate under the read/write head is called:
A. Transfer Rate
B. Seek Time
C. Settling Time
D. Rotational Latency
Answer: Option D
Solution (By JKSSB Mock Tests)
Rotational latency is the delay spent waiting for the spinning disk platter to bring the specific requested data sector directly beneath the read/write head.

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Practice More Memory and Storage Devices Questions

Question #1
What is the typical write speed of a DVD-R disc?
A. 4.5 MB/s (1x)
B. 36 MB/s (1x)
C. 1.32 MB/s (1x)
D. 11.08 MB/s (1x)

Correct Answer: Option C


Explanation:
1x DVD data rate is 11.08 Mbit/s = 1.32 MB/s. So write speed at 1x is 1.32 MB/s. Higher multipliers increase speed.

This question belongs to: Computer Memory and Storage Devices
Question #2
Which of the following storage devices has the shortest life expectancy?
A. Hard disk
B. Optical disc
C. SSD
D. Magnetic tape

Correct Answer: Option C


Explanation:
SSDs have a limited number of program/erase cycles, especially TLC and QLC NAND, so they may wear out faster under heavy writes compared to HDDs and other media, though modern SSDs have good endurance.

This question belongs to: Computer Memory and Storage Devices
Question #3
What is the typical capacity of a CD-R disc in terms of audio minutes?
A. 90 minutes
B. 80 minutes
C. 74 minutes
D. 60 minutes

Correct Answer: Option B


Explanation:
Standard CD-R can hold 80 minutes of audio (700 MB). Some older ones hold 74 minutes (650 MB).

This question belongs to: Computer Memory and Storage Devices