Which two are characteristics of RSVP?()
- A、RSVP itself provides bandwidth and delay guarantees.
- B、For RSVP to be end-to-end, all devices must support RSVP.
- C、RSVP reservations are maintained by a centralized reservations server.
- D、An RSVP compatible QoS mechanism must be used to implement guarantees according to RSVP reservations.
正确答案:B,D
答案解析:有
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