operating system set 2 Detailed Explanation And More Example

Question : 1

Local replacement

a) allows a process to select a replacement frame from the set of all frames

b) requires that each process selects from only its own set of allocated frames

c) both (A) and (B) above

d) none of the above

Question : 2

The total time to prepare a disk drive mechanism for a block of data to be read from it is

a) seek time

b) Latency

c) latency plus seek time

d) transmission time

Question : 3

In Responsive real time operating system

a) The interruption is acknowledge and operating system response to interrupt.

b) Once the operation starts no interrupt is acknowledge.

c) The operation completes in fixed inter of time.

d) None of these.

Question : 4

Thrashing can be avoided if

a) the pages, belonging to the working set of the programs are in main memory

b) the speed of CPU is increased

c) the speed of I/O processor is increased

d) all of the above

Question : 5

When an interrupt occurs, an operating system

a) ignores the interrupt

b) always changes state of interrupted process after processing the interrupt

c) always resumes execution of interrupted process after processing the interrupt

d) may change state of interrupted process to blocked and schedule another process

Question : 6

The operating system control tables maintains file table, because

a) These tables manage I/O devices and channels of the computer system.

b) These tables provide information about the existence of files, their location on secondary memory and their current status.

c) These tables provide information to manage process.

d) None of these.