Operating System Mcqs

Page No. 29

If relocation is static and is done at assembly or load time, compaction _________


acannot be done

✓


bmust be done

✖


cmust not be done

✖


dcan be done

✖


View Answer cannot be done

Another solution to the problem of external fragmentation problem is to ____________


apermit the logical address space of a process to be noncontiguous

✓


bpermit smaller processes to be allocated memory at last

✖


cpermit larger processes to be allocated memory at last

✖


dall of the mentioned

✖



A solution to the problem of external fragmentation is ____________


acompaction

✓


blarger memory space

✖


csmaller memory space

✖


dnone of the mentioned

✖


View Answer compaction

In internal fragmentation, memory is internal to a partition and ____________


ais being used

✖


bis not being used

✓


cis always used

✖


dnone of the mentioned

✖


View Answer is not being used

Time taken in memory access through PTBR is ____________


aextended by a factor of 3

✖


bextended by a factor of 2

✖


cslowed by a factor of 3

✖


dslowed by a factor of 2

✓



For every process there is a __________


apage table

✓


bcopy of page table

✖


cpointer to page table

✖


dall of the mentioned

✖


View Answer page table

For larger page tables, they are kept in main memory and a __________ points to the page table.


apage table base register

✓


bpage table base pointer

✖


cpage table register pointer

✖


dpage table base

✖



The page table registers should be built with _______


avery low speed logic

✖


bvery high speed logic

✓


ca large memory space

✖


dnone of the mentioned

✖


View Answer very high speed logic

Smaller page tables are implemented as a set of _______


aqueues

✖


bstacks

✖


ccounters

✖


dregisters

✓


View Answer registers

Paging increases the ______ time.


awaiting

✖


bexecution

✖


ccontext – switch

✓


dall of the mentioned

✖


View Answer context – switch

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