operating system Practice Questions Answers Test with Solutions & More Shortcuts

Question : 31

Par begin (P1)

a) Suspends main program, execute procedure P1 and after execution resume main program.

b) Procedure P1 is delayed infinitely due to other procedure are given preference.

c) Procedure P1 is not considered for execution.

d) None of these.

Answer: (a)

Question : 32

In UNIX process management, the following is true

a) User process enters kernel mode by issuing a system call when interrupt occurs.

b) Kernel mode is executed in user process.

c) User process enters kernel mode with out issuing a system call when interrupt occurs.

d) None of these.

Answer: (a)

Question : 33

The memory management, y one clock policy is applied then the page first loaded into a frame in memory its use bit is set to

a) Zero

b) One

c) Two

d) Three

Answer: (b)

Question : 34

The UNIX, an operating system supports

a) Multiple user processes and single thread per process.

b) Multiple user processes and multiple threads per process.

c) Single user process and single thread per process.

d) Single user process and multiple threads per process.

Answer: (c)

Question : 35

The only state transition initiated by the user process itself in an operating system is

a) Block

b) Timer run out

c) Dispatch

d) Wake up

Answer: (a)

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