单项选择题
A. point-to-point B. broadcast multi-access C. nonbroadcast multi-access D. nonbroadcast multipoint E. broadcast point-to-multipoint
A. RIP v1 B. RIP v2 C. IGRP D. OSPF E. EIGRP
A. ping 127.0.0.0 B. ping 203.125.12.1 C. telnet 127.0.0.1 D. ping 127.0.0.1 E. tracert 203.125.12.1