单项选择题
A.UTP B.T568A/B C.STP D.IEEE 802.5
AnadministratorisinchargeofseveralremoteserversinJapan....
单项选择题An administrator is in charge of several remote servers in Japan. Users call and complain they cannot connect to the company’s resources located on those servers. Which of the following commands would allow the administrator to verify the servers are running？（）
A.ping B.netstat C.nbtstat D.telnet
Whichofthefollowingnetworkprotocolsisneededtoensurethat...
单项选择题Which of the following network protocols is needed to ensure that users can type in a FQDN instead of the IP address？（）
A.DNS B.FTP C.WINS D.IMAP4
WhichofthefollowingarevalidpublicIPv4addresses？（）A.10.2...
多项选择题Which of the following are valid public IPv4 addresses？（）
A.10.2.127.220/16 B.127.0.0.1/24 C.212.2.17.54/16 D.9.2.128.254/8 E.127.2.126.213/24
