operating system Practice Questions Answers Test with Solutions & More Shortcuts

Question : 6

The time table of railway, and airline which defines arrival and departure can be considered as

a) Hard real time scheduling

b) Soft real time scheduling

c) None real time scheduling.

d) None of these.

Question : 7

In uni-processor scheduling, shortest remaining time policy is

a) A policy where scheduler chooses the process that has the shortest expected remaining processing time.

b) A policy where scheduler discards the process that has the shortest expected remaining process time.

c) A policy where process with shortest expected processing time is selected next.

d) None of these.

Question : 8

The C-SCAN, in disk scheduling states

a) The arm movement is uni directional

b) The arm movement is bidirectional

c) The are is to be state fixed

d) None of these.

Question : 9

Fragmentation of the file system

a) occurs only if the file system is used improperly

b) can always be prevented

c) can be temporarily removed by compaction

d) is the characteristic of all files system

Question : 10

Thread is

a) Dispatch able unit of work

b) Can be interrupted

c) A and B both true

d) A and B both false.