This one made me read the entire QOS chapter again (netacad module 3 chapter 9), because of the way the question is asked...
"discards or (re)marks packets" -> definitely policing
But it never buffers.
So for me based on what you see in ccna it's defnitely not a Queuing method/algo, it's a congestion avoidance tool.
CBWFQ can be configured to mark or drop specific traffic but it isn't on be default. https://www.cisco.com/en/US/docs/ios/12_0t/12_0t5/feature/guide/cbwfq.html#:~:text=CBWFQ%20allows%20you%20to%20specify,case%20with%20flow%2Dbased%20WFQ.
LLQ doesn't seem to mark anything, IE record it, so the answer is probably CBWFQ even though you have to configure it?
https://www.cisco.com/c/en/us/td/docs/ios/qos/configuration/guide/12_2sr/qos_12_2sr_book/llq_for_ipsec.html
This question might be confusing at least it was for me. Question states "which queuing method" and gives answers such as CBWFQ and LLQ which are queuing tools. Policing on the other hand is considered its own QoS.
some websites said the answer is LLQ. I think the answer should be policing, but 'which queueing method' made me confused jeez
upvoted 3 times
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