试题详情
- 单项选择题 Refer to the wxhibit . what QOS model should be used to reserve the requested bandwidth and delay needed for each allowed VOIP call regardless of changing networkconditions？（）
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）
- E
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