What is the purpose of the 'TRIM' command in SSDs?
A. To improve write performance by informing the SSD which blocks are no longer in use
B. To increase the drive's lifespan
C. To defragment the drive
D. To erase data securely
Answer: Option A
Solution (By JKSSB Mock Tests)
The TRIM command allows the operating system to notify the SSD about data blocks that are no longer considered in use, so the SSD can erase them during idle time, improving write performance and longevity.
Explanation:
SRAM is fast and expensive compared to DRAM. It does not require refreshing and is used for cache memory. DRAM is used as main memory and is dense and cheaper.
Explanation:
Under decimal SI metrics (often used by storage manufacturers), mega- means exactly one million ($10^6$), so 1 Megabyte equals exactly 1,000,000 Bytes.
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