Câu 32: H35-211-V2-5: HCIP-Access V2.5

Which of the following statements about end-to-end QoS is correct?

1. A. The priority settings in the upstream and downstream traffic profiles bound to a service port must be the same.
2. B. The priority queues of physical ports vary according to the upstream and downstream data forwarding modes.
3. C. In the upstream T-CONT of an ONU, the packets in the low-priority queue can be transmitted only after a random period of time due to insufficient bandwidth.
4. D. If the GEM CAR mode is configured, an ONU puts packets into a T-CONT queue according to the priority settings in the traffic profile bound to a GEM port. — đáp án hiện tại