Objective-type questions System Software and Operating System - 02

 

Question: The term ‘page traffic’ describes

A.    Number of pages in memory at a given instant.

B.     Number of papers required to be brought in at a given page request.

C.     The movement of pages in and out of memory.

D.    Number of pages of executing programs loaded in memory.

Answer: - C. The movement of pages in and out of memory.

 

Question: The “turn-around” time of a user job is the

A.    Time since its submission to the time its results become available.

B.     Time duration for which the CPU is allotted to the job.

C.    Total time is taken to execute the job.

D.    Time is taken for the job to move from the assembly phase to the completion phase.

Answer: - C. Total time taken to execute the job.

 

Question: Which of the following can be used as a criterion for the classification of data structure used in language processing?

A.    Nature of a data structure

B.     Purpose of data structure

C.    Lifetime of a data structure

D.    All of the above.

Answer: - D. All of the above.

 

Question: The memory utilization factor shall be computed as follows

A.    Memory in use/allocated memory.

B.     Memory in use/total memory.

C.    Memory allocated/free existing memory.

D.    Memory committed/total memory available.

Answer: - B. Memory in use/total memory.

 

Question: Program ‘preemption’ is

A.    forced de-allocation of the CPU from a program that is executing on the CPU

B.     Release of CPU by the program after completing its task.

C.    Forded allotment of CPU by a program to itself.

D.    A program termination itself due to the detection of an error.

Answer: - A. forced de-allocation of the CPU from a program that is executing on the CPU

 

Question: An assembler is

A.    Programming language dependent.

B.     Syntax dependent.

C.    Machine dependant.

D.    Data dependant.

Answer: - C. Machine Dependant.

 

Question: Which of the following is not a fundamental process state

A.    Ready

B.     Terminated

C.    Executing

D.    Blocked

Answer: - D. Blocked

 

Question: Is the ‘LRU’ page replacement policy true?

A.    Last Replaced Unit

B.     Last Restored Unit

C.    Least Recently Used.

D.    Least Required Unit.

Answer: - C. Least Recently Used.

 

Question: Which of the following is true?

A.    Block cipher technique is an encryption technique.

B.     Steam cipher technique is an encryption technique.

C.    Both (A) and (B).

D.    Neither of (A) and (B).

Answer: - C. Both (A) and (B).

 

Question: Which of the following approaches does not require knowledge of the system state?

A.    Deadlock detection.

B.     Deadlock prevention.

C.    Deadlock avoidance.

D.    None of the above.

Answer: - None of the above.

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