MS-740 Teams Audio and Video Troubleshooting 2 — Questions and Answers
Question 1: A user cannot share their screen during a Teams meeting. Which policy setting controls this?
- ScreenSharingMode in Teams meeting policy (Correct answer)
- AllowPrivateCalling in calling policy
- AllowGuestUser in org-wide settings
- AllowExternalAccess in federation settings
Correct answer: ScreenSharingMode in Teams meeting policy
The ScreenSharingMode parameter in the Teams meeting policy controls whether users can share their entire screen or just a single application.
Question 2: What does a high Round Trip Time (RTT) value in CQD indicate?
- Network latency between endpoints (Correct answer)
- High CPU utilization on client
- Codec mismatch
- Firewall blocking media ports
Correct answer: Network latency between endpoints
High RTT in CQD indicates network latency, meaning packets are taking too long to travel between the Teams client and Microsoft's servers.
Question 3: A Teams Room device shows a black screen during a video call. What should you check first?
- HDMI cable and display input source (Correct answer)
- Teams admin center device health
- DNS resolution for Teams endpoints
- Certificate validity on the device
Correct answer: HDMI cable and display input source
A black screen on a Teams Room device is most commonly caused by a loose HDMI cable or incorrect display input source selection.
Question 4: Which Teams client log file is most useful for diagnosing audio device switching issues?
- MSTeams_diagnostics.txt (Correct answer)
- network_diagnostics.txt
- call_quality_manager.txt
- audio_service.log
Correct answer: MSTeams_diagnostics.txt
The MSTeams_diagnostics.txt log captures audio device events, switching, and errors during Teams sessions.
Question 5: A user reports that their camera works in other apps but not in Teams. What is the first step?
- Check Windows Camera Privacy settings (Correct answer)
- Reinstall Teams client
- Update display drivers
- Disable antivirus software
Correct answer: Check Windows Camera Privacy settings
Windows Camera Privacy settings can block specific apps from accessing the camera even if the camera works system-wide.
Question 6: What network protocol does Teams use for real-time media transport?
- UDP (Correct answer)
- TCP
- HTTPS
- WebSocket
Correct answer: UDP
Teams uses UDP for real-time media (audio/video) because its low overhead reduces latency compared to TCP.
MS-740 Teams Audio and Video Troubleshooting 2
A user cannot share their screen during a Teams meeting.
Which policy setting controls this?