Hierarchical priority queuing is used on the interfaces on which you enable a traffic-shaping queue.
Which two statements about hierarchical priority queuing are true? (Choose two.)
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A. B. C. D. E.BC.
Hierarchical priority queuing is a technique used for traffic management in which traffic is categorized into various queues based on their priority levels. The traffic with the highest priority level is given the most priority for transmission over the network.
Answer A is true because in hierarchical priority queuing, packets in the priority queue are never dropped unless the sustained rate of priority traffic exceeds the shape rate. The sustained rate refers to the rate of data that is transmitted over a period of time.
Answer B is also true because for IPsec-encrypted packets, traffic can be matched based on the DSCP (Differentiated Services Code Point) or precedence setting. DSCP and precedence are methods used to identify and classify packets based on their priority levels.
Answer C is false because IPsec over TCP is supported for priority traffic classification. IPsec is a protocol used for securing communication over a network, and it can be used with various transport protocols, including TCP.
Answer D is false because, as mentioned earlier, for IPsec-encrypted packets, traffic can be matched based on the DSCP or precedence setting.
Answer E is true because IPsec over TCP is supported for priority traffic classification, as mentioned earlier.
In summary, hierarchical priority queuing is a traffic management technique that prioritizes traffic based on their priority levels, and it is used on interfaces where traffic shaping is enabled. IPsec-encrypted packets can be matched based on their DSCP or precedence settings, and IPsec over TCP is supported for priority traffic classification. In hierarchical priority queuing, packets in the priority queue are not dropped unless the sustained rate of priority traffic exceeds the shape rate.