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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