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. 128 GB

B. 4.7 GB

C. 700 MB

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

What is the typical capacity of a USB flash drive in 2026?

A. 128 GB

B. 1 GB

C. 2 TB

D. 16 MB

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Correct Answer: Option A

Explanation:
128 GB is a common capacity for USB flash drives in 2026, though larger capacities exist. 1 GB and 16 MB are outdated.

This question belongs to: Computer Memory and Storage Devices

Question #2

Which of the following is a type of memory that is used to store intermediate results during processing?

A. Hard disk

B. Registers

C. Cache

D. RAM

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Correct Answer: Option B

Explanation:
Registers store operands and intermediate results during arithmetic and logic operations within the CPU.

This question belongs to: Computer Memory and Storage Devices

Question #3

What is the purpose of a memory fence?

A. To separate memory regions for security

B. To enforce memory ordering in concurrent programming

C. To increase memory speed

D. To reduce memory usage

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Correct Answer: Option B

Explanation:
A memory fence is a barrier instruction that ensures all preceding memory operations are completed before subsequent ones, maintaining consistency in multi-threaded environments.

This question belongs to: Computer Memory and Storage Devices

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