File System Performance - Operating System Questions & Answers

1.

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

Answer: Option 'B'

​the most recently used page will be used last

2.

______ tend to represent a major bottleneck in system performance.

Basic Computer Knowledge Quiz

   A.) CPUs
   B.) Disks
   C.) Programs
   D.) I/O

Answer: Option 'B'

Disks

3.

____________ 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

Answer: Option 'C'

​Synchronous

4.

In UNIX, even an ’empty’ disk has a percentage of its space lost to ______

   A.) programs
   B.) inodes
   C.) virtual memory
   D.) stacks

Answer: Option 'B'

​inodes

5.

By preallocating the inodes and spreading them across the volume, we ___________ the system performance.

   A.) improve
   B.) maintain
   C.) decrease
   D.) do not affect

Answer: Option 'A'

​improve

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