单项选择题
When configuring an explicit path, what does the next-address entry identify?（）
A. the tunnel end point B. the tunnel start point C. a specific node to be traversed D. the node prior to the tunnel end point
单项选择题 Which TCP port does LDP use for its protocol communications?（）
多项选择题 What are three valid LDP message types? （）(Choose three.)
单项选择题 Which attribute can be associated with an LDP-signaled LSP?（）
