Two sites are configured to use G.729 for calls between them. A user reports that calls to the remote site connect but have very low volume and sound muffled. The call detail records show the call negotiated G.729. What is the most likely cause of the low audio quality?

Packet loss is causing the codec to conceal errors

The G.729 codec is using a low bit rate that reduces audio fidelity

The remote gateway is not configured for G.729

The jitter buffer is set too high on the receiving phone

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Domain 6Objective 1

6.1 Troubleshoot Media Quality Issues Such as One-Way, Choppy Audio, Video Artifact 350-801 Practice Questions (Page 2)

Part of the Media and QoS domain, which accounts for 10% of the 350-801 exam. Cisco does not publish an official question count, but from its 120-minute exam (~50–80 total, ~5–8 in this domain), expect 1–2 from this objective — we provide 31 practice questions to prepare you well beyond it. (estimate)

31questions here

7free pages

7concepts

10%of the exam

Questions 6–10

6foundation · easy
Two VoIP endpoints fail to establish a call because they cannot agree on a common codec. Which signaling protocol is responsible for negotiating the codec?
Select an answer first
7foundation · easy
A network engineer is analyzing a call quality report. The MOS is 3.5, jitter is 30 ms, and packet loss is 2%. Which metric is most likely causing the MOS to be below the acceptable threshold of 4.0?
Select an answer first
8application · medium
Two sites are configured to use G.729 for calls between them. A user reports that calls to the remote site connect but have very low volume and sound muffled. The call detail records show the call negotiated G.729. What is the most likely cause of the low audio quality?
Select an answer first
9foundation · easy
A VoIP call has choppy audio. The network engineer suspects insufficient bandwidth. Which QoS mechanism can help prioritize voice traffic over data traffic on the WAN link?
Select an answer first
10application · medium
A user reports that calls to a specific remote site have poor quality. The RTCP metrics show: MOS 2.8, jitter 20 ms, packet loss 0.2%, and round-trip time 300 ms. The call is using G.729. What is the most likely cause of the poor MOS?
Select an answer first

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6.1 Troubleshoot Media Quality Issues Such as One-Way, Choppy Audio, Video Artifact 350-801 Practice Questions (Page 2)

Questions 6–10

Two VoIP endpoints fail to establish a call because they cannot agree on a common codec. Which signaling protocol is responsible for negotiating the codec?

A network engineer is analyzing a call quality report. The MOS is 3.5, jitter is 30 ms, and packet loss is 2%. Which metric is most likely causing the MOS to be below the acceptable threshold of 4.0?

Two sites are configured to use G.729 for calls between them. A user reports that calls to the remote site connect but have very low volume and sound muffled. The call detail records show the call negotiated G.729. What is the most likely cause of the low audio quality?

A VoIP call has choppy audio. The network engineer suspects insufficient bandwidth. Which QoS mechanism can help prioritize voice traffic over data traffic on the WAN link?

A user reports that calls to a specific remote site have poor quality. The RTCP metrics show: MOS 2.8, jitter 20 ms, packet loss 0.2%, and round-trip time 300 ms. The call is using G.729. What is the most likely cause of the poor MOS?

Keep studying — Media and QoS