What is the typical speed of a CD-ROM drive at 52x? MCQ with Answer and Explanation

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What is the typical speed of a CD-ROM drive at 52x?

A. 52 KB/s

B. 52 MB/s

C. 7.8 MB/s

D. 1.3 MB/s

Answer: Option C

Solution (By JKSSB Mock Tests)

1x CD speed is 150 KB/s. 52x is 52 * 150 = 7800 KB/s = 7.8 MB/s. So option B is correct.

This question belongs to: Computer Memory and Storage Devices

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Question #1

What is the typical speed of a DVD drive at 16x?

A. 22.16 MB/s

B. 16 MB/s

C. 21.12 MB/s

D. 48.5 MB/s

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Correct Answer: Option C

Explanation:
1x DVD is 1.32 MB/s, so 16x = 16 * 1.32 = 21.12 MB/s.

This question belongs to: Computer Memory and Storage Devices

Question #2

What is the physical medium used in a hard disk to store data?

A. Aluminum or glass platters coated with magnetic material

B. Silicon chips

C. Metallic tape

D. Polycarbonate layer

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Correct Answer: Option A

Explanation:
Hard disks use platters made of aluminum or glass, coated with a thin magnetic layer that stores data in the form of magnetized regions.

This question belongs to: Computer Memory and Storage Devices

Question #3

Which of the following storage devices has the absolute slowest random data access speed?

A. Magnetic Tape Drive

B. Hard Disk Drive

C. Internal RAM

D. Solid State Drive

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Correct Answer: Option A

Explanation:
Magnetic tape drives use sequential access mechanics, meaning they must physically wind through a tape spool to reach specific data, making random access extremely slow.

This question belongs to: Computer Memory and Storage Devices

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