单项选择题

Severalremotesalesemployees，whohavecomeintotheofficethisweek，reportthattheyare unabletogetontheInternet，butnootherusershavereportedsimilarissues.Thehelp deskhasescalatedtheissueandthecasenotesstatethattheusershaveIPaddressesthatbeginwith169.WhichofthefollowingshouldthesystemadministratorcheckFIRST？（）
A.DHCPserver
B.Networkswitches
C.DNSserver
D.Corerouter

A.Thehelp
B.WhichofthefollowingshouldthesystemadministratorcheckFIRST？（）
A.DHCPserver
C.Networkswitches
D.DNSserver
E.Corerouter

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单项选择题

AsystemadministratorneedstospecifyasetofFQDNtoIPaddressmappingsforalegacyserver；theadministratordoesnotwantthelegacyservertobereferencedbyotherservers.Which ofthefollowingshouldtheadministratorusetosetthis？（）
A.DHCPserver
B.DNSserver
C.Hostfile
D.Routestatements

A.Which
B.DHCPserver
C.DNSserver
D.Hostfile
E.Routestatements

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WhichofthefollowingistheMINIMUMnumberofdisksnecessaryforaRAID10array？（）

A.2
B.3
C.4
D.6