Which of the following represents an explicit example of an optical disk storage system? MCQ with Answer and Explanation

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Which of the following represents an explicit example of an optical disk storage system?

A. Digital Versatile Disc (DVD)

B. Magnetic Spool Tape

C. Solid State Drive

D. Internal RAM Module

Answer: Option A

Solution (By JKSSB Mock Tests)

Digital Versatile Discs (DVDs) store binary code as physical micro-structures read via focused optical laser pickup assemblies.

This question belongs to: Computer Memory and Storage Devices

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Question #1

Which unit of storage represents exactly $2^{40}$ bytes of data?

A. 1 Megabyte

B. 1 Petabyte

C. 1 Terabyte

D. 1 Gigabyte

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Correct Answer: Option C

Explanation:
$2^{10}$ is Kilobyte, $2^{20}$ is Megabyte, $2^{30}$ is Gigabyte, and $2^{40}$ is Terabyte. Thus, $2^{40}$ bytes equals 1 Terabyte (TB).

This question belongs to: Computer Memory and Storage Devices

Question #2

What is the function of a memory slot on a motherboard?

A. To connect the RAM module

B. To provide power to the system

C. To hold the CPU

D. To attach the hard disk

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Correct Answer: Option A

Explanation:
Memory slots (DIMM slots) are used to install RAM modules onto the motherboard, providing the connection between RAM and the memory bus.

This question belongs to: Computer Memory and Storage Devices

Question #3

What is the purpose of a memory address register (MAR)?

A. To hold the address of the memory location to be accessed

B. To hold the instruction currently being executed

C. To store the program counter

D. To hold the data read from or written to memory

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Correct Answer: Option A

Explanation:
The MAR holds the address of a memory location from which data will be fetched or to which data will be stored.

This question belongs to: Computer Memory and Storage Devices

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