单项选择题
A.Load balancing
B.QoS
C.High availability
D.Fault tolerance
单项选择题 Routingconvergencetimeiswhichofthefollowing？（）
单项选择题 AtechnicianisinstallingabasicrouterforaSOHOnetwork.AfterinstallingtherouterthePCsconnectedtoitarenotabletoacquireanIPaddress.Whichofthefollowingdidthetechnicianfailtoconfigurecorrectly？（）
单项选择题 WhichofthefollowingistheMOSTcommonpin-outconfigurationusedwhencrimpingRJ-45connectors？（）