operating system set 5 Detailed Explanation And More Example

Question : 1

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 : 2

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 : 3

Thread is

a) Dispatch able unit of work

b) Can be interrupted

c) A and B both true

d) A and B both false.

Question : 4

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 : 5

If normalized turnaround time of different process are given. Then Highest response ratio next policy in uni processor scheduling policy selects

a) The ready process with lowest normalized turnaround time.

b) The ready process with highest normalized turnaround time.

c) The process with shortest expected processing time.

d) The process with highest expected processing time.

Question : 6

Following illustrates Associative Memory

a) The address of the data is supplied by the user

b) Same as the tracks associated with disk memory

c) No need for address; information is used as address

d) Data is accessed serially