单项选择题
Which of the following is STP BEST identified by under the cable sheath？（）
A.Number of twists in wires B.Number of wires C.Lubricant D.Foil
多项选择题 Whichofthefollowingwouldbeconsideredaroutingprotocol？（）
单项选择题 WhichofthefollowingnetworkservicesisresponsibleformappingnamestoIPaddresses？（）
单项选择题 Whenoneconnectiontoahostfailsinafullmeshnetwork，whichofthefollowingistrue？（）
