File System – Performance MCQ’s

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This set of Operating System Multiple Choice Questions & Answers (MCQs) focuses on “File System – Performance”.

1. In UNIX, even an ’empty’ disk has a percentage of its space lost to ______
a) programs
b) inodes
c) virtual memory
d) stacks

2. By preallocating the inodes and spreading them across the volume, we ___________ the system performance.
a) improve
b) decrease
c) maintain
d) do not affect

3. _______ tend to represent a major bottleneck in system performance.
a) CPUs
b) Disks
c) Programs
d) I/O

4. ____________ writes occur in the order in which the disk subsystem receives them, and the writes are not buffered.
a) Asynchronous
b) Regular
c) Synchronous
d) Irregular

5. A file being read or written sequentially should not have its pages replaced in LRU order, because _____________
a) it is very costly
b) the most recently used page will be used last
c) it is not efficient
d) all of the mentioned

6. With _______ a requested page and several subsequent pages are read and cached.
a) write ahead
b) read ahead
c) free-behind
d) add-front

7. In ___________ writes, the data is stored in the cache.
a) Asynchronous
b) Regular
c) Synchronous
d) Irregular

8. In the optimized technique for sequential access ___________ removes a page from the buffer as soon as the next page is requested.
a) write ahead
b) read ahead
c) free-behind
d) add-front

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