Which of the following is a type of memory that has the fastest access time? MCQ with Answer and Explanation

Which of the following is a type of memory that has the fastest access time?
A. RAM
B. Cache memory
C. Hard disk
D. Registers
Answer: Option D
Solution (By JKSSB Mock Tests)
Registers have the fastest access time because they are inside the CPU, typically accessed in a single clock cycle.

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Practice More Memory and Storage Devices Questions

Question #1
What technology is used in pen drives (USB flash drives) to retain data without a power source?
A. Magnetic Storage
B. Static RAM
C. Flash Memory (EEPROM)
D. Optical Storage

Correct Answer: Option C


Explanation:
Pen drives use NAND flash memory, which is a type of electrically erasable programmable read-only memory (EEPROM) that functions without moving parts.

This question belongs to: Computer Memory and Storage Devices
Question #2
What is the primary architectural disadvantage of Dynamic RAM (DRAM) compared to Static RAM (SRAM)?
A. DRAM consumes less power overall.
B. DRAM cannot handle multi-threaded processing requests.
C. DRAM requires periodic electrical refreshing which slows down access speed.
D. DRAM is structurally more complex and expensive per gigabyte.

Correct Answer: Option C


Explanation:
DRAM stores data using capacitors, which lose charge over time. This design requires continuous refreshing cycles, introducing latency that makes it slower than SRAM.

This question belongs to: Computer Memory and Storage Devices
Question #3
Which of the following is a sequential access storage device?
A. Compact Disc
B. Hard Disk Drive
C. Solid State Drive
D. Magnetic Tape

Correct Answer: Option D


Explanation:
Magnetic tapes require data to be read or written sequentially from beginning to end, unlike random-access devices like HDDs, SSDs, and CDs.

This question belongs to: Computer Memory and Storage Devices