单项选择题

A server will not power on. Which of the following devices should the administrator use FIRST to determine the problem?（）

A. Loop back plugs
B. Power supply tester
C. System logs
D. TDR

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单项选择题
A company has 100GB of data that needs to be automatically backed up daily， and needs to be stored for 20 years.  Which of the following backup media is the BEST solution for archiving the server data？（）

A. Tape
B. SAN
C. Flash
D. Optical
单项选择题
Anadministratorbuysanewserver.Theserverhasfourdisksandneedstobeconfiguredformaximumspace.Faulttoleranceisnotaconstraint.Whichofthefollowingconfigurations completesthistask？（）

A.RAID 0
B.RAID 1
C.RAID 5
D.RAID 10
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