Conference Call Audio & Visual Setup for Conference Calls 2 — Questions and Answers
Question 1: What is the minimum recommended upload speed for a smooth 1080p video conference?
- 3–5 Mbps (Correct answer)
- 0.1 Mbps
- 10 GB
- 100 Kbps
Correct answer: 3–5 Mbps
A 1080p HD video stream typically requires 3–5 Mbps of upload bandwidth to transmit smoothly to other participants.
Question 2: Why is a wired Ethernet connection generally preferred over Wi-Fi for important conference calls?
- It provides more stable, lower-latency connectivity with less interference (Correct answer)
- It offers higher video resolution
- It allows more participants to join
- It encrypts the call automatically
Correct answer: It provides more stable, lower-latency connectivity with less interference
Ethernet eliminates wireless interference and signal fluctuation, delivering consistent bandwidth and lower latency than Wi-Fi.
Question 3: What is the purpose of noise suppression software in conference call applications?
- To filter out keyboard clicks, fans, and other background sounds in real time (Correct answer)
- To amplify the speaker's voice
- To encrypt outgoing audio
- To synchronize audio with video
Correct answer: To filter out keyboard clicks, fans, and other background sounds in real time
AI-based noise suppression identifies and removes non-voice sounds like typing, HVAC noise, and dog barks from the audio stream.
Question 4: When should a presenter close unnecessary applications before starting a screen share?
- Before starting the meeting, to prevent notifications and reduce lag (Correct answer)
- Only after the meeting begins
- After sharing the screen
- When asked by the host
Correct answer: Before starting the meeting, to prevent notifications and reduce lag
Closing unused apps prevents embarrassing notifications from appearing on screen and frees CPU/GPU resources for smoother screen sharing.
Question 5: What does 'virtual background' technology allow a participant to do during a video call?
- Replace their real background with a custom image or video (Correct answer)
- Improve their camera's frame rate
- Blur their face for anonymity
- Share their screen with a single click
Correct answer: Replace their real background with a custom image or video
Virtual backgrounds use AI segmentation or green screen keying to substitute the participant's actual environment with any chosen image or video.
Question 6: Why is proper lighting on the speaker's face critical for video conference calls?
- It helps cameras capture a clear, well-exposed image that is easy for others to see (Correct answer)
- It speeds up internet bandwidth
- It activates HD encoding automatically
- It prevents echo on the audio channel
Correct answer: It helps cameras capture a clear, well-exposed image that is easy for others to see
Adequate, even facial lighting allows the camera sensor to render the speaker's features clearly without noise or harsh shadows.
Conference Call Audio & Visual Setup for Conference Calls 2
What is the minimum recommended upload speed for a smooth 1080p video conference?