operating system set 5 Detailed Explanation And More Example

Question : 1

In memory management Free page list is: A- A list of page frames available for reading in pages. B- A list where the replaced page is assigned without modification. C-A list where the replaced page is assigned with modification.

a) A, B, C are true

b) A and B are true

c) A and C are true

d) B and C are true.

Question : 2

When a frame in main memory is locked

a) The page currently stored in that frame can be replaced.

b) The page currently stored in that frame cannot be replaced.

c) Pages currently in frame can be removed in round-robin style.

d) None of these.

Question : 3

Relocatable programs

a) cannot be used with fixed partitions

b) can be loaded almost anywhere in memory

c) do not need a linker

d) can be loaded only at one specific location

Question : 4

I/O OBR (I/O Buffer register) is

a) Used for the exchange of data between an I/O module and the processor.

b) Specifies particular I/O device.

c) (A) and (B) both true.

d) (A) and (B) both false.

Question : 5

In multi processor scheduling; A: Gang scheduling, B: Dynamic scheduling, C: Dedicated processor management.; 1- The number of threads in a process can be altered during the course of execution. 2- This provides implicit scheduling defined by the assignment of threads to processors, 3- It is applied to the simultaneous scheduling of threads that make up a single process.

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 - 1, C - 1

Question : 6

File record length

a) should always be fixed

b) should always be variable

c) depends upon the size of the file

d) should be chosen to match the data character