Implementing and Operating Cisco Collaboration Core Technologies (CLCOR) — Question 463

What is a description of the DiffServ model used for implementing QoS?

Answer options

• A. AF43 has higher drop precedence than AF42 but lower drop precedence than AF41
• B. RTP traffic from voice and video calls is marked EF and placed in the same queue
• C. AF41 has higher drop precedence than AF42, which has higher drop precedence than AF43
• D. Voice and video calls are marked with different DSCP values and placed in different queues

Correct answer: D

Explanation

The correct answer is D because in the DiffServ model, different types of traffic, such as voice and video, are marked with specific Differentiated Services Code Point (DSCP) values and handled in separate queues to ensure optimal Quality of Service. Options A, B, and C incorrectly describe the precedence or handling of traffic types and do not accurately reflect the functionality of the DiffServ model.