Operating System Mcqs

Page No. 92

RAID level ________ refers to disk arrays with striping at the level of blocks, but without any redundancy.


a0


b1


c2


d3


View Answer 0

The mean time to failure of a mirrored disk depends on ____________
I) the mean time to failure of individual disks
II) the mean time to repair


aOnly I


bOnly II


cBoth I and II


dNeither I nor II


View Answer Both I and II

The technique of duplicating every disk is known as ____________


amirroring


bshadowing


credundancy


dall of the mentioned


View Answer mirroring

The solution to the problem of reliability is the introduction of __________


aaging


bscheduling


credundancy


ddisks


View Answer redundancy

If the mean time to failure of a single disk is 100,000 hours, then the mean time to failure of some disk in an array of 100 disks will be ____________


a100 hours


b10 days


c10 hours


d1000 hours


View Answer 1000 hours

A large number of disks in a system improves the rate at which data can be read or written if ____________


athe disks are operated on sequentially


bthe disks are operated on selectively


cthe disks are operated in parallel


dall of the mentioned



The surface area of tape is ________ the surface area of a disk.


amuch lesser than


bmuch larger than


cequal to


dnone of the mentioned


View Answer much larger than

Random access to tape is _______ a disk seek.


amuch slower than


bmuch faster than


ccomparable to


dnone of the mentioned


View Answer much slower than

A tape holds _______ data than optical or magnetic disk cartridge.


alesser


bmore


cmuch lesser


dnone of the mentioned


View Answer more

WORM stands for ____________


awrite only, read mandatory


bwrite once, read many times


cwrite only once, read multiple


dnone of the mentioned



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