A branch office reports that voice calls are choppy during business hours. The branch connects to headquarters via a site-to-site VPN over a 20 Mbps internet link. The router CPU is at 40%. The link is at 80% utilization. The voice traffic is marked EF and is prioritized with LLQ on the WAN egress. The VPN tunnel is encrypted with AES-256. What is the most likely cause of the choppy audio?

The VPN tunnel is not supporting EF marking

The router CPU is too low for AES-256 encryption

The LLQ is applied before encryption, so voice is not prioritized in the tunnel

The internet link is too small at 20 Mbps

A company has a 100 Mbps internet link shared by voice, video, and data. During peak usage, voice calls experience jitter and occasional drops. The voice traffic is marked DSCP EF, video is AF41, and data is BE. The current policy applies LLQ to EF with a 10 Mbps policer and a class-based weighted fair queue (CBWFQ) for the rest. What change would most directly improve voice quality?

Apply shaping to the data class

Remove the policer from the LLQ

Increase the LLQ policer to 20 Mbps

Change video marking from AF41 to EF

Users on a remote site report that audio in calls to headquarters is choppy and breaks up, especially during peak hours. Monitoring shows jitter averaging 45 ms and 2% packet loss on the WAN link. The link is a 10 Mbps MPLS circuit currently running at 60% utilization. The voice VLAN is marked with DSCP EF. What should you do to resolve the issue?

Change the codec from G.711 to G.729 on the remote site gateway

Disable DiffServ marking and use CoS instead

Increase the jitter buffer on the remote site phones to 100 ms

Apply a low-latency queue (LLQ) to prioritize EF traffic on the WAN interface

A call is established, but the audio quality is poor because the endpoints negotiated a low-bitrate codec. Which signaling message exchange is most likely to contain the codec information?

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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 6)

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 26–30

26expert · hard
A branch office reports that voice calls are choppy during business hours. The branch connects to headquarters via a site-to-site VPN over a 20 Mbps internet link. The router CPU is at 40%. The link is at 80% utilization. The voice traffic is marked EF and is prioritized with LLQ on the WAN egress. The VPN tunnel is encrypted with AES-256. What is the most likely cause of the choppy audio?
Select an answer first
27application · medium
A company has a 100 Mbps internet link shared by voice, video, and data. During peak usage, voice calls experience jitter and occasional drops. The voice traffic is marked DSCP EF, video is AF41, and data is BE. The current policy applies LLQ to EF with a 10 Mbps policer and a class-based weighted fair queue (CBWFQ) for the rest. What change would most directly improve voice quality?
Select an answer first
28foundation · easy
In a VoIP call, one-way audio is reported. The call setup succeeds, but the remote party cannot hear the caller. Which two network elements are most commonly responsible for this symptom?
Select an answer first
29application · medium
Users on a remote site report that audio in calls to headquarters is choppy and breaks up, especially during peak hours. Monitoring shows jitter averaging 45 ms and 2% packet loss on the WAN link. The link is a 10 Mbps MPLS circuit currently running at 60% utilization. The voice VLAN is marked with DSCP EF. What should you do to resolve the issue?
Select an answer first
30foundation · easy
A call is established, but the audio quality is poor because the endpoints negotiated a low-bitrate codec. Which signaling message exchange is most likely to contain the codec information?
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 6)

Questions 26–30

In a VoIP call, one-way audio is reported. The call setup succeeds, but the remote party cannot hear the caller. Which two network elements are most commonly responsible for this symptom?

A call is established, but the audio quality is poor because the endpoints negotiated a low-bitrate codec. Which signaling message exchange is most likely to contain the codec information?

Keep studying — Media and QoS