B. To temporarily hold data during read/write operations to smooth data flow
C. To protect against data loss
D. To store frequently used data for faster access
Answer: Option B
Solution (By JKSSB Mock Tests)
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.
Explanation:
When the CPU looks for data in the cache and fails to find it (a cache miss), it suffers a time delay penalty because it must fetch that data from the slower system RAM.
Explanation:
A standard CD-R can hold 700 MB of data (or 80 minutes of audio), though some older ones may be 650 MB. DVD-R holds 4.7 GB, and Blu-ray 25 GB.
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