单选题Which statement describes how RSVP guarantees bandwidth reservations?（）AIt polices each individual session to an explicit rate.BIt does not police, but never allows link oversubscription.CIt polices the aggregate rate of all sessions to an explicit rate.DIt does not police, but limits the amount of reservable bandwidth.
单选题
Which statement describes how RSVP guarantees bandwidth reservations?（）
A
It polices each individual session to an explicit rate.
B
It does not police, but never allows link oversubscription.
C
It polices the aggregate rate of all sessions to an explicit rate.
D
It does not police, but limits the amount of reservable bandwidth.
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