Which of the following storage devices has the shortest life expectancy?
A. Magnetic tape
B. Optical disc
C. Hard disk
D. SSD
Answer: Option D
Solution (By JKSSB Mock Tests)
SSDs have a limited number of program/erase cycles, especially TLC and QLC NAND, so they may wear out faster under heavy writes compared to HDDs and other media, though modern SSDs have good endurance.
Explanation:
A buffer (or disk cache) in a hard disk is a small amount of RAM used to temporarily hold data being read from or written to the disk, improving performance by reducing access time.
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