Which of the following is a type of optical disc that is read-only? MCQ with Answer and Explanation

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Which of the following is a type of optical disc that is read-only?

A. DVD-RAM

B. Blu-ray ROM (BD-ROM)

C. CD-R

D. DVD-RW

Answer: Option B

Solution (By JKSSB Mock Tests)

BD-ROM is read-only. CD-R and DVD-R are recordable once, DVD-RW and DVD-RAM are rewritable.

This question belongs to: Computer Memory and Storage Devices

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Question #1

What is the typical capacity of a standard DVD+R disc?

A. 8.5 GB

B. 700 MB

C. 25 GB

D. 4.7 GB

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Correct Answer: Option D

Explanation:
DVD+R (single-layer) holds 4.7 GB, same as DVD-R.

This question belongs to: Computer Memory and Storage Devices

Question #2

Which of the following storage media is considered optical storage?

A. SSD

B. Hard disk

C. Pen drive

D. DVD

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Correct Answer: Option D

Explanation:
DVD (Digital Versatile Disc) is an optical storage medium that uses a laser to read and write data. Hard disks, SSDs, and pen drives use magnetic or flash storage.

This question belongs to: Computer Memory and Storage Devices

Question #3

What is the typical speed of a DVD drive at 4x?

A. 8.8 MB/s

B. 5.28 MB/s

C. 6.0 MB/s

D. 4.0 MB/s

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Correct Answer: Option B

Explanation:
1x DVD = 1.32 MB/s, so 4x = 5.28 MB/s.

This question belongs to: Computer Memory and Storage Devices

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