What technology is used in pen drives (USB flash drives) to retain data without a power source? MCQ with Answer and Explanation

What technology is used in pen drives (USB flash drives) to retain data without a power source?
A. Optical Storage
B. Flash Memory (EEPROM)
C. Magnetic Storage
D. Static RAM
Answer: Option B
Solution (By JKSSB Mock Tests)
Pen drives use NAND flash memory, which is a type of electrically erasable programmable read-only memory (EEPROM) that functions without moving parts.

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Practice More Memory and Storage Devices Questions

Question #1
Which of the following is true about DRAM?
A. It is static and does not need refresh
B. It is slower than SRAM but cheaper
C. It uses flip-flops to store data
D. It is non-volatile

Correct Answer: Option B


Explanation:
DRAM is slower than SRAM because of refresh cycles, but it is cheaper and denser, making it suitable for main memory. It is volatile and uses capacitors.

This question belongs to: Computer Memory and Storage Devices
Question #2
Which of the following is a characteristic of a DVD-RAM?
A. It uses a blue laser
B. It is a rewritable optical disc with random access
C. It is read-only
D. It has a capacity of 25 GB

Correct Answer: Option B


Explanation:
DVD-RAM is a rewritable optical disc format that allows random access, similar to a hard disk, and can be rewritten many times.

This question belongs to: Computer Memory and Storage Devices
Question #3
What is the typical storage capacity of a Blu-ray disc in GB?
A. 700 MB
B. 128 GB
C. 25 GB (single layer)
D. 4.7 GB

Correct Answer: Option C


Explanation:
Single-layer Blu-ray holds 25 GB. Dual-layer 50 GB, triple 100 GB, quad 128 GB. The most common is 25 GB.

This question belongs to: Computer Memory and Storage Devices