Consider a system where each file is associated with a 16 bit number. For each…
2014
Consider a system where each file is associated with a 16 bit number. For each file, each user should have the read and write capability. How much memory is needed to store each user's access data?
- A.
16 KB
- B.
32 KB
- C.
64 KB
- D.
128 KB
Attempted by 209 students.
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Correct answer: A
A 16-bit identifier supports 2^16 files (65,536). Each file needs 2 bits per user for read/write access. Total = 65,536 * 2 bits = 131,072 bits. In bytes: 131,072 / 8 = 16,384 bytes. This is exactly 16 KB.