Implementing and Operating Cisco Collaboration Core Technologies (CLCOR) — Question 200

What are two QoS requirements for VoIP traffic? (Choose two.)

Answer options

• A. Loss must be no more than 1 percent.
• B. Voice traffic must be marked to DSCP AF41.
• C. One-way latency must be no more than 200 ms.
• D. Voice traffic must be marked to DSCP EF.
• E. Average one-way jitter is greater than 50 ms.

Correct answer: A, D

Explanation

Option A is correct as VoIP requires minimal packet loss to maintain call quality. Option D is also correct because marking voice traffic with DSCP EF prioritizes it in the network. Options B and E are incorrect; marking to DSCP AF41 is not a standard for VoIP, and having jitter greater than 50 ms would degrade call quality.