OS Questions and Answers Set 4

Operating System (OS)

Questions 31 to 40

31.	Which of the following controls all the computer resources and provides the base upon which the application programs can be written? (a)  Application Software                         (b)  C.P.U                (c)  Operating System (d)  Bare Hardware                                  (e)  Device Drivers.
32.	Which of the following system call loads a process into memory? (a)  Load                  (b)  Create               (c)  Fork                  (d)  Execv                (e)  Copy.
33.	Expand the term UNICS (a)  Uniplexed Information Computing System (b)  Unipoint Information Computing System (c)  Uniplexed Instruction Computing System (d)  Unipoint Instruction Computing System (e)  Union  Instruction Common System.
34.	Which of the following software layer is used between the kernel and the user computations in the network O.S? (a)  Local O.S                                        (b)  Network O.S      (c)  Global  O.S (d)  Distributed O.S                                 (e)  Remote O.S.
35.	Which of the following allows many users to share the computer simultaneously? (a)  Time Sharing O.S                                                           (b)  Real Time O.S (c)  Interactive O.S                                  (d)  Batch O.S         (e)  Network O.S.
36.	If a program is under execution by CPU then we say the process is under (a)  CPU Burst                                       (b)  Process                                           (c)  I/O Burst (d)  Ready Queue                                   (e)  New State.
37.	Each process is represented in the operating system by its own (a)  Thread               (b)  PCB                  (c)  State                 (d)  Instructions        (e)  PCC.
38.	The amount of time that a job waits in a ready queue for getting selected by CPU is called (a)  Turn around time                                                             (b)  Waiting time                     (c)  Completion time (d)  Submission time                                                             (e)  Throughput.
39.	The process of storing and restoring from PCB is called (a)  Loading                                            (b)  Relocation         (c)  Dispatcher (d)  Process                                           (e)  context switch.
40.	Which of the following memory management scheme loads all pages of a program from disk into main memory? (a)  Paging                                             (b)  Demand paging (c)  Segmentation                                   (d)  Segmentation with paging (e)  Demand segmentation.

Answers

31.	Answer :  (c) Reason : Operating system controls all the computer resources and provides the base upon which the application programs can be written
32.	Answer :  (a) Reason : Load system call loads a process into main memory
33.	Answer :  (a) Reason : Uniplexed Information Computing System
34.	Answer :  (b) Reason : Network Operating System is the software layer used between the kernel and the user
35.	Answer :  (a) Reason : Timesharing Operating System allows many users to share the computer simultaneously
36.	Answer :  (a) Reason : CPU burst
37.	Answer :  (b) Reason : Each process is represented in the operating system by its own PCB
38.	Answer :  (b) Reason:  The amount of time that a job waits in a ready queue for getting selected by CPU is called Waiting time.
39.	Answer :  (e)  Reason :       The process of storing and restoring from PCB is called Context switch
40.	Answer :  (a)  Reason: Paging memory management scheme loads all pages of a program from disk into main memory.