operating system set 5 Detailed Explanation And More Example

Question : 1

In disk storage devices during read and write operation

a) Head is rotate while platter is stationary

b) Head is stationary while platter rotates

c) Head and platter are both stationary

d) None is true

Question : 2

In file management, in the following record blocking method, the optional use of space is made, without unused space left

a) Fixed blocking

b) Variable-length spanned blocking

c) Variable-length un-spanned blocking

d) None of these.

Question : 3

In File system architecture which is the correct arrangement from lower level to higher.

a) Device drives, basic file system, basic I/ O supervisor, logical I/O.

b) Basic file system, basic I/O, logical I/O, device drives.

c) Basic I/O, basic file system, logical I/O, device drives.

d) None of these.

Question : 4

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 : 5

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 : 6

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.