单项选择题
A.Time required for a VPN connection to occur
B.Time required by protocols to update their forwarding tables after changes have occurred
C.Time required for an IDS to detect suspicious software
D.Time required by switch ports to update their link status and transition to the forwarding state
单项选择题 AtechnicianisinstallingabasicrouterforaSOHOnetwork.AfterinstallingtherouterthePCsconnectedtoitarenotabletoacquireanIPaddress.Whichofthefollowingdidthetechnicianfailtoconfigurecorrectly？（）
单项选择题 WhichofthefollowingistheMOSTcommonpin-outconfigurationusedwhencrimpingRJ-45connectors？（）
单项选择题 AnadministratorisinchargeofseveralremoteserversinJapan.Userscallandcomplaintheycannotconnecttothecompany’sresourceslocatedonthoseservers.Whichofthefollowingcommandswouldallowtheadministratortoverifytheserversarerunning？（）