operating system set 6 Detailed Explanation And More Example

Question : 1

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 : 2

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 : 3

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.

Question : 4

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 : 5

Application Programming Interface is

a) A set of function and call programs that allows clients and servers to intercommunicate.

b) A database, where information access is limited to the selection of rows that satisfy all search criteria.

c) A computer usually a high powered work station.

d) None of these.

Question : 6

The normalized turnaround time is

a) Ratio of turnaround time to service time

b) Ratio of turnaround time to waiting time

c) Ratio of service time to waiting time

d) Ratio of waiting time to service time.