题目内容

For Ethernet-to-Ethernet routers, such as the Cisco 831 behind a cable modem or DSL bridge, a traffic shaper is configured. This is required since the output 10-Mbps interface will not be congested. Which two statements are true?（）

A. The parent policy-map shapes and the child policy-map queues.
B. The mean-rate and burst-size must always be the same value.
C. This will not work without a Dialer interface configured.
D. The shaper provides congestion feedback.

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