Which of the following storage devices has the largest storage capacity per unit cost? MCQ with Answer and Explanation

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Which of the following storage devices has the largest storage capacity per unit cost?

A. Magnetic tape

B. Hard disk

C. Blu-ray disc

D. SSD

Answer: Option A

Solution (By JKSSB Mock Tests)

Magnetic tape offers the lowest cost per gigabyte, making it ideal for massive archival storage, though access is slow.

This question belongs to: Computer Memory and Storage Devices

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Question #1

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Which of the following is a type of memory that is used for temporary storage of data in a calculator?

A. ROM

B. RAM

C. EEPROM

D. Flash

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Correct Answer: Option B

Explanation:
Calculators use RAM for storing current calculations and temporary data, while ROM holds the operating instructions.

This question belongs to: Computer Memory and Storage Devices

Question #2

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Which type of memory is used to store the firmware that boots the computer?

A. RAM

B. Cache

C. Hard disk

D. ROM (BIOS)

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Correct Answer: Option D

Explanation:
The BIOS firmware is stored in ROM (or flash memory) on the motherboard, and it is the first code executed during the boot process to initialize hardware and load the OS.

This question belongs to: Computer Memory and Storage Devices

Question #3

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Which of the following is a characteristic of a solid-state drive?

A. It uses optical media

B. It is susceptible to mechanical failure

C. It requires defragmentation

D. It has no moving parts

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Correct Answer: Option D

Explanation:
SSDs have no moving parts, making them more reliable and shock-resistant than HDDs. They do not require defragmentation.

This question belongs to: Computer Memory and Storage Devices

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