Which of the following statements about priority queuing is true?
A . PQ and LLQ mechanisms are similar and can replace each other.
B . By default, WRR or WFQ is enabled on a router instead of P
D . PQ consumes massive storage and processing capabilities. Therefore, enabling PQ on low-end devices is not recommended.
E . PQ can only be applied on serial interfaces and not on Ethernet interfaces.
Answer: B