Which of the following is a non-volatile memory technology that retains data even when power is off? MCQ with Answer and Explanation

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Which of the following is a non-volatile memory technology that retains data even when power is off?

A. DRAM

B. Flash memory

C. SDRAM

D. SRAM

Answer: Option B

Solution (By JKSSB Mock Tests)

Flash memory is non-volatile. DRAM, SRAM, and SDRAM are volatile and lose data without power.

This question belongs to: Computer Memory and Storage Devices

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Question #1

What is the typical data transfer rate of a USB 3.0 flash drive?

A. 1 Gbps

B. 5 Gbps (theoretical)

C. 10 Gbps

D. 480 Mbps

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Correct Answer: Option B

Explanation:
USB 3.0 has a theoretical maximum data rate of 5 Gbps. Actual throughput is lower, but it's significantly faster than USB 2.0 (480 Mbps).

This question belongs to: Computer Memory and Storage Devices

Question #2

What is the function of a memory controller's command scheduler?

A. To decode commands

B. To handle power management

C. To reorder commands for better performance

D. To generate clock signals

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Correct Answer: Option C

Explanation:
The command scheduler in a memory controller reorders commands to maximize bus utilization and reduce latency.

This question belongs to: Computer Memory and Storage Devices

Question #3

Which of the following is a type of memory that is non-volatile and used for firmware?

A. DRAM

B. RAM

C. Flash ROM

D. SRAM

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Correct Answer: Option C

Explanation:
Flash ROM is non-volatile and often used for storing firmware (BIOS) because it can be updated electrically.

This question belongs to: Computer Memory and Storage Devices

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