Which of the following storage media is considered optical storage? MCQ with Answer and Explanation

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Which of the following storage media is considered optical storage?

A. Hard disk

B. DVD

C. SSD

D. Pen drive

Answer: Option B

Solution (By JKSSB Mock Tests)

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

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Question #1

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Which operational characteristic distinguishes a 'Cold Boot' from a 'Warm Boot' regarding system memory?

A. A cold boot bypasses the execution of the BIOS firmware instructions completely.

B. A cold boot requires cooling the RAM modules manually with specialized fans.

C. A warm boot systematically reformats the secondary storage partitions.

D. A cold boot starts from a complete zero-power state, completely clearing all volatile memory contents.

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Correct Answer: Option D

Explanation:
A cold boot involves turning on a computer from a powered-off state, initializing all hardware and starting with cleared volatile memory, whereas a warm boot simply restarts the OS without cutting hardware power.

This question belongs to: Computer Memory and Storage Devices

Question #2

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Which computer memory is used to store the bootstrap loader program that initializes the system when powered on?

A. Cache

B. RAM

C. Hard Disk

D. ROM

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Correct Answer: Option D

Explanation:
The BIOS/bootstrap loader is stored in non-volatile ROM (Read-Only Memory) so it is retained even when the computer is turned off.

This question belongs to: Computer Memory and Storage Devices

Question #3

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Which of the following describes the core distinction between standard RAM and ROM?

A. RAM relies entirely on optical lasers, while ROM utilizes magnetic fields.

B. RAM is positioned outside the motherboard architecture entirely.

C. RAM is volatile and temporary, whereas ROM is non-volatile and permanent.

D. RAM can only be read, while ROM can be both read and written to.

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Correct Answer: Option C

Explanation:
RAM loses all data immediately when system power drops (volatile), while ROM retains its stored instructions permanently without electrical current (non-volatile).

This question belongs to: Computer Memory and Storage Devices

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