Implementing and Operating Cisco Collaboration Core Technologies (CLCOR) — Question 212

What is an indicator of network congestion in VoIP communications?

Answer options

• A. jitter increase due to variable delay
• B. video loss due to video frame corruption
• C. gaps in the voice due to packet loss
• D. discards in the interface of routers and switches

Correct answer: A

Explanation

An increase in jitter, which results from variable delays, is a clear indicator of network congestion, as it affects the quality of voice communication. While packet loss leading to gaps in voice and video loss are issues, they are not direct indicators of congestion itself. Discards in router and switch interfaces may occur for various reasons and do not specifically indicate congestion in VoIP traffic.