Which of the following is the fastest type of memory? MCQ with Answer and Explanation

Which of the following is the fastest type of memory?
A. DRAM
B. Flash
C. SRAM
D. ROM
Answer: Option C
Solution (By JKSSB Mock Tests)
SRAM is the fastest among the listed options because it does not need refresh cycles and uses flip-flops, allowing near-instant access times, though it is more expensive.

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Practice More Memory and Storage Devices Questions

Question #1
Which of the following is a characteristic of a solid-state drive (SSD) compared to a hard disk drive (HDD)?
A. SSDs have faster random access times
B. SSDs are louder
C. SSDs have higher latency
D. SSDs are more susceptible to physical shock

Correct Answer: Option A


Explanation:
SSDs have much faster random access times because there is no mechanical latency (seek time, rotational latency). They are also more resistant to shock and quieter.

This question belongs to: Computer Memory and Storage Devices
Question #2
What is the typical transfer rate of a USB 2.0 flash drive?
A. 10 Gbps
B. 480 Mbps
C. 5 Gbps
D. 60 MB/s

Correct Answer: Option B


Explanation:
USB 2.0 has a maximum signaling rate of 480 Mbps (megabits per second), which translates to about 60 MB/s theoretical, but actual is less.

This question belongs to: Computer Memory and Storage Devices
Question #3
What type of flash memory chip structure stacks memory cells vertically to achieve much higher storage capacities within the same physical footprint?
A. 3D NAND
B. NOR Flash
C. Planar NAND
D. SRAM Array

Correct Answer: Option A


Explanation:
3D NAND technology stacks flash memory cells vertically in multiple layers, allowing manufacturers to achieve massive storage densities on a single silicon die.

This question belongs to: Computer Memory and Storage Devices