Operating System Mcqs

Page No. 91

The overall I/O rate in RAID level 4 is ____________


alow


bvery low


chigh


dnone of the mentioned


View Answer high

In RAID level 4, one block read, accesses __________


aonly one disk


ball disks simultaneously


call disks sequentially


dnone of the mentioned


View Answer only one disk

A performance problem with _________ is the expense of computing and writing parity.


aA performance problem with _________ is the expense of computing and writing parity.


bparity based RAID levels


call RAID levels


dnone of the mentioned



RAID level _____ is also known as block interleaved parity organisation and uses block level striping and keeps a parity block on a separate disk.


a1


b2


c3


d4


View Answer 4

RAID level 3 supports a lower number of I/Os per second, because _______________


aEvery disk has to participate in every I/O request


bOnly one disk participates per I/O request


cI/O cycle consumes a lot of CPU time


dAll of the mentioned



RAID level 3 does not have _________ as in RAID level 1.


aefficiency


benough storage space for data


cstorage overhead


dtime consumption overhead


View Answer storage overhead

RAID level ______ is also known as memory style error correcting code(ECC) organization.


a1


b2


c3


d4


View Answer 2

A single parity bit can be used for ____________


adetection


bmultiple error corrections


cfew error corrections


dall of the mentioned


View Answer detection

RAID level ______ is also known as bit interleaved parity organization.


a0


b1


c2


d3


View Answer 3

RAID level _______ refers to disk mirroring.


a0


b1


c2


d3


View Answer 1

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