Voice quality is bad due to high delay and jitter on a link. Which two actions will improve the quality
of voice calls? (Choose two.)
A.
Increase the queue size of the voice class.
B.
Guarantee bandwidth during congestion to the voice class with a bandwidth command.
C.
Increase the tx-ring of the egress interface.
D.
Implement LLQ for the voice class.
E.
Decrease the rx-ring of the egress interface.
F.
Decrease the queue size of the voice class.
why decrease the queue size for voice?
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I think the answers should be A and D.
Each queue has a limit on the number of packets that the router can place into the queue. This limit, referred to as the depth, is a user- configurable limit. During periods of high traffic, a queue fills with packets that are waiting for transmission. When a queue reaches its queue limit and becomes full, by default, the router drops packets until the queue is no longer full.
When a packet queue temporarily experiences congestion, increasing the depth of the queue using the queue-limit command reduces the number of packets dropped. However, setting the queue limit to a high value might reduce the number of packet buffers available to other interfaces.
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