Which QoS model manages the QoS requirements for the network on a per-hop behavior (PHB) basis?()
- A、best-effort delivery
- B、ingress committed rate (ICR)
- C、shaping and policing
- D、egress committed rate (ECR)
- E、Integrated Services (IntServ)
- F、differentiated services (DiffServ)
正确答案:F
答案解析:有
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