单选题What is the purpose of the RSVP hello interval?（）AIt is the size of the RSVP hello packetBIt is how long it maintains RSVP neighborsCIt is the length of time between RSVP hello packetsDIt is how long the router waits before declaring a router to be down
单选题
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
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