operating system Practice Questions Answers Test with Solutions & More Shortcuts

Question : 31

In uni-processor scheduling, a priorities enforcement is

a) When processes are assigned priorities and scheduling policy favor higher priority processes.

b) The scheduling keeps resources of system busy.

c) Here currently running process can be interrupted and moved to ready state by the operating system.

d) None of these.

Question : 32

By principle of locality, in least recently used policy, in memory management

a) The page replaced in memory is least likely to be referenced in the near future.

b) The page replaced in memory is most likely to be referenced in the near future.

c) The pages replaced in memory in round-robin fashion.

d) None of these.

Question : 33

Match the following access rights:

• A-Specific user, B-User group, C-All ;
• 1- Individual user who are designated by user I, 2-A set of users who are individually defined, 3-Every user has access to the system.

a) A - 1, B - 2, C - 3

b) A - 2, B - 1, C - 3

c) A - 1, B - 3, C - 2

d) A - 3, B - 2, C - 1

Question : 34

Stub

a) is included in the image for each library routine reference

b) is small piece of code that indicates how to locate the appropriate memory resident library routine

c) how to load the library if the routine is not already present

d) all of the above

Question : 35

In disk scheduling, the shortest service time first policy selects the disk request that

a) In cure the maximum seek time

b) In cure the minimum seek time

c) Is received first

d) Is received at last.