Q2Media and QoS
Which statement describes the DiffServ model used to implement QoS?
← → navigate · a answer
Community votes
Discussion · 8
9
I would say "D" is correct. A doesn't make sense, because 43 has a higher drop precedence than 42, which has a higher drop precedence than 41.
3
D is the only option that makes sense.
2
Agree. For the same reason C makes no sense either. D is my answer
D 2
Selected Answer: D
D makes the most sense, A & C are just plain wrong
2
should be D, the other answers do not really make any sense
1
The EF model is used for voice over IP media traffic (RTP) by default in most vendors phones. Cisco IP Phones mark signaling packets (SCCP or SIP) to CS3 (24), while media (RTP) is marked to EF (DSCP 46) by default. All EF traffic is usually mapped to the priority queue (PQ) on Cisco switches and routers.
1
https://www.networkworld.com/article/2234016/the-qos-expedited-forwarding-ef-model.html
D 1
Selected Answer: D
A and C. are incorrect. AF43 has higher drop precedence than AF42 and AF41.
B. is incorrect. Voice call is EF and Video is AF41 (or AF42 for jabbers).
Preferred Architecture for Cisco Collaboration 12.x Enterprise On-Premises Deployments.
Chapter 8: Bandwidth Management