Operating System Mcqs

Page No. 68

The algorithm in which we allocate memory to each process according to its size is known as ____________


aproportional allocation algorithm


bequal allocation algorithm


csplit allocation algorithm


dnone of the mentioned



The algorithm in which we split m frames among n processes, to give everyone an equal share, m/n frames is known as ____________


aproportional allocation algorithm


bequal allocation algorithm


csplit allocation algorithm


dnone of the mentioned



The maximum number of frames per process is defined by ____________


athe amount of available physical memory


boperating System


cinstruction set architecture


dnone of the mentioned



Consider a machine in which all memory reference instructions have only one memory address, for them we need at least _____ frame(s).


aone


btwo


cthree


dnone of the mentioned


View Answer two

When a page fault occurs before an executing instruction is complete if ____________


athe instruction must be restarted


bthe instruction must be ignored


cthe instruction must be completed ignoring the page fault


dnone of the mentioned



The minimum number of frames to be allocated to a process is decided by the ____________


athe amount of available physical memory


boperating System


cinstruction set architecture


dnone of the mentioned



Consider the following page reference string.
1 2 3 4 2 1 5 6 2 1 2 3 7 6 3 2 1 2 3 6
For Optimal page replacement algorithms with 3 frames, the number of page faults is?


a16


b15


c14


d11


View Answer 11

Consider the following page reference string.
1 2 3 4 2 1 5 6 2 1 2 3 7 6 3 2 1 2 3 6
For FIFO page replacement algorithms with 4 frames, the number of page faults is?


a16


b15


c14


d11


View Answer 14

Consider the following page reference string.
1 2 3 4 2 1 5 6 2 1 2 3 7 6 3 2 1 2 3 6
For FIFO page replacement algorithms with 3 frames, the number of page faults is?


a16


b15


c14


d11


View Answer 16

Consider the following page reference string.
1 2 3 4 2 1 5 6 2 1 2 3 7 6 3 2 1 2 3 6
For LRU page replacement algorithm with 5 frames, the number of page faults is?


a10


b14


c8


d11


View Answer 8

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