Q. In UNIX, two per process ________ are used by the kernel to track swap space use.

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Q. It is __________ to reread a page from the file system than to write it to swap space and then to reread it from there.

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

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

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

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Q. In RAID level 4, one block read, accesses __________

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Q. The overall I/O rate in RAID level 4 is :

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Q. A write of a block has to access :

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Q. RAID level 5 is also known as :

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Q. RAID level ____ spreads parity and data among all N+1 disks rather than storing data in N disks and parity in 1.

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Q. The potential overuse of a single parity disk is avoided in RAID level _______

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Q. RAID level 0+1 is used because, RAID level 0 provides ______ whereas RAID level 1 provides ________

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Q. If a disk fails in RAID level ___ rebuilding lost data is easiest.

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Q. A large number of disks in a system improves the rate at which data can be read or written :

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Q. RAID stands for :

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Q. 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 :

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

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Q. The technique of duplicating every disk is known as :

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Q. 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

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

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