question
You are configuring bi-directional redistribution between dissimilar routing protocols. There is more than one traffic path connecting the domains.
Which three techniques can be used to prevent routing feedback loops? (Choose Three)
A. Passive null interface
B. Route filter
C. Change administrative distance
D. Static metric
E. Default loopback
F. Default metric
Answer: A, B and F.
B C F，像A这样的选项没有意义，本来null接口就是个表示不可达的虚
接口，设成passive没有任何意义
大家意见呢
