单项选择题
A.UTP
B.T568A/B
C.STP
D.IEEE 802.5
单项选择题 AnadministratorisinchargeofseveralremoteserversinJapan.Userscallandcomplaintheycannotconnecttothecompany’sresourceslocatedonthoseservers.Whichofthefollowingcommandswouldallowtheadministratortoverifytheserversarerunning？（）
单项选择题 WhichofthefollowingnetworkprotocolsisneededtoensurethatuserscantypeinaFQDNinsteadoftheIPaddress？（）
多项选择题 WhichofthefollowingarevalidpublicIPv4addresses？（）