What is the typical storage capacity of a Blu-ray disc in GB? MCQ with Answer and Explanation

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What is the typical storage capacity of a Blu-ray disc in GB?

A. 700 MB

B. 128 GB

C. 4.7 GB

D. 25 GB (single layer)

Answer: Option D

Solution (By JKSSB Mock Tests)

Single-layer Blu-ray holds 25 GB. Dual-layer 50 GB, triple 100 GB, quad 128 GB. The most common is 25 GB.

This question belongs to: Computer Memory and Storage Devices

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Question #1

Which of the following is a type of memory that uses a laser to read data?

A. Pen drive

B. CD-ROM

C. SSD

D. Hard disk

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Correct Answer: Option B

Explanation:
CD-ROM and other optical discs use a laser to read data by detecting reflected light from pits and lands.

This question belongs to: Computer Memory and Storage Devices

Question #2

Which memory management technique allows a computer to use hard disk space as additional RAM?

A. Paging

B. Cache memory

C. Virtual memory

D. Segmentation

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Correct Answer: Option C

Explanation:
Virtual memory is a memory management technique that uses a portion of the hard disk or SSD as an extension of RAM, allowing the system to run larger applications or multiple programs simultaneously.

This question belongs to: Computer Memory and Storage Devices

Question #3

Which of the following is a type of memory that is used for storing data in an e-book reader?

A. ROM

B. Hard disk

C. Flash memory

D. RAM

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Correct Answer: Option C

Explanation:
E-book readers use flash memory for storing e-books and system software.

This question belongs to: Computer Memory and Storage Devices

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