多项选择题
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
单项选择题 How many syslog servers can be configured on the WX platform?（）
多项选择题 What are two merits of having a correct time setting on each WX/WXC device in a community? （）(Choose two.)
单项选择题 Which statement is true regarding the remote route table of a local WX device?（）
