[amp_mcq option1=”latency” option2=”latency plus transmission time” option3=”latency plus seek time” option4=”latency plus seek time plus transmission time E. None of the above” correct=”option4″]
The correct answer is D. latency plus seek time plus transmission time.
Latency is the time it takes for the disk drive to locate the correct track on the disk. Seek time is the time it takes for the disk drive to move the read/write head to the correct position on the track. Transmission time is the time it takes for the data to be read from the disk and transferred to the computer.
Here is a more detailed explanation of each option:
- Option A: Latency. Latency is the time it takes for the disk drive to locate the correct track on the disk. This is the time it takes for the disk drive to spin up to the correct speed and for the read/write head to move to the correct position on the track.
- Option B: Latency plus transmission time. This is the time it takes for the disk drive to locate the correct track on the disk and for the data to be read from the disk and transferred to the computer.
- Option C: Latency plus seek time. This is the time it takes for the disk drive to locate the correct track on the disk and for the read/write head to move to the correct position on the track.
- Option D: Latency plus seek time plus transmission time. This is the total time it takes for a disk drive mechanism to prepare a block of data to be read from it. It includes the time it takes for the disk drive to spin up to the correct speed, for the read/write head to move to the correct position on the track, and for the data to be read from the disk and transferred to the computer.
- Option E: None of the above. This is not a correct answer.