Which two statements about queuing mechanisms are true? (Choose two)

Which two statements about queuing mechanisms are true? (Choose two)

A.
An advantage of the round-robin queuing algorithm is it’s ability to prioritize traffic.

B.
Priority queuing (PQ) uses a dynamic configuration and quickly adapts to changing network conditions.

C.
Serial interfaces at E1 speed (2048 Mbps) and below use weighted fair queuing (WFQ) by default.

D.
Custom queuing (CQ) uses a dynamic configuration and quickly adapts to changing network conditions.

E.
Weighted fair queuing (WFQ) is the simplest of queuing method.

F.
When no other queuing strategies are configured, all interfaces except serial interfaces at E1 speed (2048 Mbps) and below use FIFO by default.