Which two statements best describe CBWFQ? (Choose two.)
A.
The CBWFQ scheduler provides a guaranteed minimum amount of bandwidth to each class.
B.
CBWFQ services each class queue using a strict priority scheduler.
C.
The class-default queue only supports WFQ.
D.
Inside a class queue, processing is always FIFO, except for the class-default queue.
Explanation:
Class-based weighted fair queuing (CBWFQ) extends the standard WFQ functionality to provide
support for user-defined traffic classes. For CBWFQ, you define traffic classes based on match
criteria including protocols, access control lists (ACLs), and input interfaces. Packets satisfying the
match criteria for a class constitute the traffic for that class. A queue is reserved for each class,
and traffic belonging to a class is directed to the queue for that class.
Once a class has been defined according to its match criteria, you can assign it characteristics. To
characterize a class, you assign it bandwidth, weight, and maximum packet limit. The bandwidth
assigned to a class is the guaranteed bandwidth delivered to the class during congestion. Within
each queue processing is FIFO, except for the class-default queue.