多选题What are three characteristics of a service tunnel? （）(Choose three.)AIt is bidirectional.BIt carries optimized traffic.CIt can carry traffic using UDP.DIt is formed only within a community
题目
多选题
What are three characteristics of a service tunnel? （）(Choose three.)
A
It is bidirectional.
B
It carries optimized traffic.
C
It can carry traffic using UDP.
D
It is formed only within a community