Operating System Questions & Answers – File System Implementation – Performance

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

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

Answer: b
Explanation: None.

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

Answer: b
Explanation: None.

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

Answer: a
Explanation: None.
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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
View Answer

Answer: c
Explanation: None.

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

Answer: a
Explanation: None.
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6. 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
View Answer

Answer: b
Explanation: None.

7. 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
View Answer

Answer: c
Explanation: None.
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8. With _______ a requested page and several subsequent pages are read and cached.
a) write ahead
b) read ahead
c) free-behind
d) add-front
View Answer

Answer: b
Explanation: None.

Sanfoundry Global Education & Learning Series – Operating System.

Here’s the list of Best Books in Operating System.

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To practice all areas of Operating System, here is complete set on 1000+ Multiple Choice Questions and Answers on Operating System.

If you find a mistake in question / option / answer, kindly take a screenshot and email to [email protected]

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Manish Bhojasia - Founder & CTO at Sanfoundry
Manish Bhojasia, a technology veteran with 20+ years @ Cisco & Wipro, is Founder and CTO at Sanfoundry. He lives in Bangalore, and focuses on development of Linux Kernel, SAN Technologies, Advanced C, Data Structures & Alogrithms. Stay connected with him at LinkedIn.

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