单项选择题
Which of the following is the BEST recovery method for a server that only aggregates report data and stores data on separate servers？（）
A. Full
B. Disk imaging
C. Incremental
D. Tape backup
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Atechnicianatasmallbusinessgoesintotheserverroomtoperformmaintenanceonaserver andnoticesitisveryhotandaudiblealarmsaregoingoff.Thetechnicianisunsureofhowto remedythesituation.Whichofthefollowingshouldthetechniciando？（）
A.Turn off all the equipment in the server closet
B.Install a fan in the server closet
C.Turn off the power to the server closet
D.Follow escalation procedures for emergencies -
单项选择题
Whichofthefollowingtechnologiesallowsmultiplelogicalsubnetstospananentirephysicalswitched network？（）
A. ARP
B. DMZ
C. VLAN
D. VPN -
单项选择题
WhichofthefollowingexpansioncardsshouldbeinstalledintoaservertoprovideiSCSISAN connectivity？（）
A. HBA
B. PBX
C. VoIP
D. NIC
