单项选择题
Which of the following should a technician use to remove dust from the inside of a server case？（）
A.Compressed air
B.Vacuum
C.Soap and water
D.Disinfecting wipes
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A. Full
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C. Incremental
D. Tape backup -
单项选择题
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 -
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Whichofthefollowingtechnologiesallowsmultiplelogicalsubnetstospananentirephysicalswitched network？（）
A. ARP
B. DMZ
C. VLAN
D. VPN
