单项选择题
Which of the following is the maximum transmission speed of CAT5e？（）
A.10Mbps B.100Mbps C.1000Mbps D.10000Mbps
单项选择题 Whichofthefollowingroutingprotocolsisalinkstateandusesabackbonecalledarea0？（）
单项选择题 Whichofthefollowingcablestandardshasamaximumeffectiverangeof25meters（82feet）？（）
