问题:
A . class-based policing is configured using the Modular QoS command-line (MQC)
B . only the Frame Relay traffic-shaping (FRTS) mechanism can interact with a Frame Relay network, adapting to indications of Layer2 congestion in the WAN links
C . Distributed Traffic Shaping (DTS) is configured with the police command under the policy map configuration
D . both Frame Relay traffic shaping (FRTS) and virtual IP (VIP)-based Distributed Traffic Shaping (DTS) have the ability to mark traffic
● 参考解析
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