多项选择题

An RSVP session is maintained with the periodic exchange of which two message types?（） (Choose two.)

A.path
B.resv
C.session
D.keepalive

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单项选择题

How is an RSVP resv message sent back to the ingress router?（）

A. reverse path of the RRO
B. least cost to the ingress router
C. shortest path to the egress router
D. reverse path of the path vector TLV

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?（）

A. It is the size of the RSVP hello packet
B. It is how long it maintains RSVP neighbors
C. It is the length of time between RSVP hello packets
D. It is how long the router waits before declaring a router to be down