operating system Practice Questions Answers Test with Solutions & More Shortcuts

Question : 16

Instruction register contains

a) The address of an instruction to be fetched.

b) The instructions most recently fetched.

c) The data to be written into memory.

d) The data to be read from memory.

Question : 17

For multithreading

a) Tasks to be performed can be independent

b) Task to be performed is essentially serialized.

c) Tasks cannot be divided into number of threads.

d) None is true.

Question : 18

The Linux operating system supports

a) Single thread per process and single process.

b) Multiple thread per process and single process.

c) Single thread per process and multiple processes.

d) Multiple thread per process and multiple processes.

Question : 19

Physical address in memory management is

a) Actual location in main memory

b) Memory location independent of current assignment of data to memory.

c) Memory location dependent to some known point.

d) None of these.

Question : 20

In semaphore the process blocked by wait operation is unblocked if

a) Semaphore value becomes nonnegative

b) Semaphore value becomes nonpositive

c) Semaphore value is negative

d) Semaphore value is positive.