多项选择题
A. IGRP
B. CDP
C. OSPF
D. RIP v1
E. RIP v2
F. EIGRP
多项选择题 Which of the following OSPF commands, when used together, will put the network 192.168.10.0/24 into OSPF area 0?（）
单项选择题 What is the reason for configuring a passive interface on a router?（）
多项选择题 Which of the following technologies can be used in distance vector routing protocols to prevent routing loops?（）