What are two characteristics of priority queuing? (Choose two.)
A. It allocates an equal share of bandwidth to each flow.
B. It applies strict priority to user-defined traffic classes.
C. It ensures that critical traffic queues are serviced first.
D. It guarantees bandwidth for user-defined traffic classes.
E. It places traffic into one of four queues.
B and C are the correct answers as per : https://www.cisco.com/c/en/us/td/docs/ios-xml/ios/qos_conmgt/configuration/xe-16-5/qos-conmgt-xe-16-5-book/qos-conmgt-oview.html
It reads: “The LLQ feature brings strict PQ to CBWFQ. Strict PQ allows delay-sensitive data such as voice to be dequeued and sent before packets in other queues are dequeued”
C & E
C. It ensures that critical traffic queues are serviced first.
E. It places traffic into one of four queues.