Which of the following allows an administrator to recover the MOST data？（）
A. System image
B. Incremental backup
C. System state restore
Differential backup
AcompanyhashadproblemswiththeirHVACsystembeingabletocooltheirdatacenterastheyhavegrown.WhichofthefollowingcouldBESTbeusedtohelpreducetheloadontheHVACsystem?（）
A. ReplacingtheCAT5cableswithCAT6cables
B. Replacingtraditionalrackswithwatercooledracks
C. Turningoffnon-criticalapplicationserversduringnon-businesshours
D. Takingthesecondpowersupplyoutofnon-criticalservers
Which of the following MOST correctly describes a hot spare？（）
A drive assigned to an array that will only hold parity information used for rebuilding a failedarray drive.
B. An external hard drive to which all data is replicated to for recovery in the event of a failure.
C. A drive assigned to an array that will automatically be used to rebuild a failed array drive.
D. An extra drive purchased and stored in the parts cabinet to replace failed drives.
AtechnicianwantstouseanexistingDHCPserverforthreeadditionalVLANs.Whichofthefollowingfeaturesneedstobeconfiguredtoallowforthisaddition?（）
A. DHCPserver
B. Proxyserver
C. Repeater
DHCPrelay
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