Conference Call Web Conference Protocols 5

Question 1

A participant reports choppy audio while video looks fine. What is the most likely cause?

Accepted Answer

Network jitter or packet loss affecting the audio stream

Answer

Choppy audio typically signals jitter or packet loss rather than a camera issue.

Question 2

If a user cannot connect to a conference behind a strict corporate firewall, what often resolves it?

Accepted Answer

Routing media through a TURN server over TCP/443

Answer

A TURN relay over TCP port 443 can traverse firewalls that block UDP and peer-to-peer paths.

Question 3

Echo is heard during a call. What is the most common fix?

Accepted Answer

Enable acoustic echo cancellation or use headphones

Answer

Echo usually comes from speaker output looping into the mic, solved by echo cancellation or headphones.

Question 4

Which metric best indicates real-time conference quality problems?

Accepted Answer

Round-trip latency, jitter, and packet loss

Answer

Latency, jitter, and packet loss are the core network metrics that drive call quality.

Question 5

A presenter's shared video plays but participants hear no audio from it. What is commonly forgotten?

Accepted Answer

Enabling 'share computer/system audio' when starting the share

Answer

System audio is not shared by default and must be explicitly enabled when starting a screen share.

Conference Call Practice Test