单项选择题
The traffic engineering extensions to RSVP provide what functionality?（）
A. IP routing B. data security C. label distribution D. data compression
单项选择题 What is the purpose of the RSVP hello interval?（）
多项选择题 What are two purposes of the RSVP signaling protocol when configuring MPLS Label-Switched Paths (LSPs)? （）(Choose two.)
多项选择题 Which three are true about MPLS LSP establishment using RSVP?（） (Choose three.)
