单项选择题
Which of the following Class A networks is reserved for "private networks" use only？（）
A.network 10.0.0.0 B.network 127.0.0.0 C.network 129.135.0.0 D.network 192.168.0.0
单项选择题 WhichofthefollowingoptionsisavalidhostIPaddress？（）
单项选择题 Whichofthefollowingcommandsshouldbeusedtolistalloftheactivenetworkinterfacesonasystem？（）
单项选择题 Thestatement："searchaustin.ibm.comraleigh.ibm.com"belongsinwhichofthefollowingfiles？（）
