单项选择题
A. weight
B. MED
C. local preference
D. origin
E. next - hop
F. AS - path
单项选择题 Which BGP attribute is used by BGP to prevent routing loops?（）
单项选择题 The 192.168.0.0 network is not being propagated throughout the network. Observe the BGP configuration commands from the advertising router. What is the reason the 192.168.0.0 route is not being advertised? （）
单项选择题 Above is the output from show ip bgp neighbors command. What is line 21 stating about the BGP connection？（）