operating system set 1 Detailed Explanation And More Example

Question : 1

Memory that is located on the disk either Hard or floppy is referred as

a) Virtual memory

b) Real memory

c) Main memory

d) None of these.

Question : 2

In multi processor scheduling, independent parallelism indicates

a) There is synchronization among processes at gross level.

b) There is no explicit synchronization among processes.

c) A parallel processing or multi tasking is done within a single application.

d) None of these.

Question : 3

Program counter (PC) contains

a) Address of an instruction to be fetched

b) Instructions most recently fetched

c) Data to be written into memory

d) Data to be read from memory

Question : 4

Memory table is used

a) To allocate main memory to processes

b) To allocate secondary memory to processes

c) To manage virtual memory

d) A, B and C are true.

Question : 5

In UNIX process management, the system process runs in

a) Kernel mode only

b) Kernel and user mode both

c) User mode only

d) None of these.

Question : 6

In disk scheduling when SCAN (Look) policy is applied and when last track reached in one direction

a) The service direction is reversed and scan proceeds in opposite direction.

b) The arm returns to the opposite end of the disk and scan begins again.

c) A and B both true.

d) None of these.