单项选择题

WhichofthefollowingoptionswouldbesthelptoreducepacketfragmentationforaTCPapplicationtransferringlargeamountsofdatabetweenserversacrossapathofmultiplenetworks？（）

A.AdjustPathMTUattributes，usingthenocommand.
B.Adjustthestatusqueuesizeontheadapters，usingthechdevcommand.
C.Adjustipforwardingtoenabled，usingthenocommand.
D.Adjusttcp_maxbursttoenabled，usingthenocommand.

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Acustomerisconsideringasecondp690atasecondsiteforDisasterRecoverypurposes.WhichofthefollowingOnDemandofferingsismostapplicableinthisenvironment？（）

A.On/OffCoD
B.ReserveCoD
C.PermanentCUoD
D.CapacityBackup

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Whichofthefollowingcommandswillonlyprovideasnapshotofaveragememoryusageforaprocess？（）

A.vmtune
B.psau
C.iostat
D.rmss-m