A user reports that they can hear the remote party, but the remote party cannot hear them. The call is established and no error messages appear. Which troubleshooting step should be performed first?

Verify that SIP signaling is reaching the remote party

Verify that RTP packets from the user's phone are reaching the remote party

Check the user's phone for a faulty microphone

A company has a 10 Mbps MPLS link between two sites. Voice is marked EF, video is AF41, and data is BE. The WAN router has LLQ for EF with a 1 Mbps policer, CBWFQ for AF41 with 3 Mbps, and the rest for BE. Users report that voice is choppy during peak hours. The RTCP metrics show jitter of 40 ms and 1.5% packet loss on voice. The LLQ policer is not dropping packets. What is the most likely cause?

The jitter buffer on the phones is set too low

The LLQ policer is not the issue; the voice packets are being dropped by the service provider's policer

The EF marking is not being preserved across the WAN

The voice codec is G.729 which is sensitive to jitter

A remote user reports that they can hear the on-site engineer clearly, but the engineer cannot hear the remote user at all. The call is established with G.711 and the call control shows both endpoints in the Connected state. The remote user's PC is behind a home router with SIP ALG enabled. Which action should you take first?

Increase the jitter buffer on the engineer's phone

Verify the remote user's firewall allows UDP 5060 inbound

Disable SIP ALG on the remote user's home router

Change the codec to G.729 on both endpoints

A company has a 50 Mbps internet link. Voice is marked EF, video is AF41, and data is BE. The current policy uses LLQ for EF with a 5 Mbps policer, CBWFQ for AF41 with 20 Mbps, and the rest for BE. During peak hours, voice quality is good but video is choppy. The network team wants to improve video quality without affecting voice. Which change best achieves this?

Increase the AF41 bandwidth allocation from 20 Mbps to 30 Mbps

Change video marking from AF41 to EF

Increase the LLQ policer from 5 Mbps to 10 Mbps

A video call between two offices shows the remote video freezing for 2–3 seconds every minute. The audio is clear. The network team checks the video RTP stream and sees 0.8% packet loss and jitter of 5 ms. The video is H.264 at 1080p. What is the most likely cause of the freezing?

The 1080p resolution is too high for the codec

The receiving endpoint lacks hardware acceleration for H.264

Jitter of 5 ms is causing buffer underrun

Packet loss causing the decoder to wait for the next keyframe

CiscoCertified Network Professional Collaboration

Domain 6Objective 1

6.1 Troubleshoot Media Quality Issues Such as One-Way, Choppy Audio, Video Artifact 350-801 Practice Questions (Page 5)

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 21–25

21foundation · easy
A user reports that they can hear the remote party, but the remote party cannot hear them. The call is established and no error messages appear. Which troubleshooting step should be performed first?
Select an answer first
22expert · hard
A company has a 10 Mbps MPLS link between two sites. Voice is marked EF, video is AF41, and data is BE. The WAN router has LLQ for EF with a 1 Mbps policer, CBWFQ for AF41 with 3 Mbps, and the rest for BE. Users report that voice is choppy during peak hours. The RTCP metrics show jitter of 40 ms and 1.5% packet loss on voice. The LLQ policer is not dropping packets. What is the most likely cause?
Select an answer first
23application · medium
A remote user reports that they can hear the on-site engineer clearly, but the engineer cannot hear the remote user at all. The call is established with G.711 and the call control shows both endpoints in the Connected state. The remote user's PC is behind a home router with SIP ALG enabled. Which action should you take first?
Select an answer first
24expert · hard
A company has a 50 Mbps internet link. Voice is marked EF, video is AF41, and data is BE. The current policy uses LLQ for EF with a 5 Mbps policer, CBWFQ for AF41 with 20 Mbps, and the rest for BE. During peak hours, voice quality is good but video is choppy. The network team wants to improve video quality without affecting voice. Which change best achieves this?
Select an answer first
25application · medium
A video call between two offices shows the remote video freezing for 2–3 seconds every minute. The audio is clear. The network team checks the video RTP stream and sees 0.8% packet loss and jitter of 5 ms. The video is H.264 at 1080p. What is the most likely cause of the freezing?
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 5)

Questions 21–25

A user reports that they can hear the remote party, but the remote party cannot hear them. The call is established and no error messages appear. Which troubleshooting step should be performed first?

A video call between two offices shows the remote video freezing for 2–3 seconds every minute. The audio is clear. The network team checks the video RTP stream and sees 0.8% packet loss and jitter of 5 ms. The video is H.264 at 1080p. What is the most likely cause of the freezing?

Keep studying — Media and QoS