300-360 · Question #93
When implementing video teleconferencing over a wireless network, which three attributes should be considered when cell planning? (Choose three.)
The correct answer is A. latency B. jitter D. packet loss. Real-time video conferencing requires cell planning focused on the three primary QoS metrics that directly impact media stream quality: latency, jitter, and packet loss.
Question
When implementing video teleconferencing over a wireless network, which three attributes should be considered when cell planning? (Choose three.)
Options
- Alatency
- Bjitter
- Cthroughput
- Dpacket loss
- Eclient association
- Fnumber of users on the network
How the community answered
(37 responses)- A95% (35)
- C3% (1)
- E3% (1)
Why each option
Real-time video conferencing requires cell planning focused on the three primary QoS metrics that directly impact media stream quality: latency, jitter, and packet loss.
Latency measures one-way delay; high latency in video teleconferencing degrades conversational quality and audio-video synchronization, making it a critical cell-planning attribute.
Jitter is the variation in packet arrival delay; excessive jitter causes choppy video and audio because real-time media buffers cannot compensate for large variations in delivery timing.
Throughput is important for capacity planning but is not one of the three primary RF cell-planning attributes specifically tied to real-time media quality for video teleconferencing.
Packet loss directly causes video frame drops and audio gaps in real-time streams, so minimizing loss through proper cell coverage and signal quality is essential during RF cell planning.
Client association is a Layer 2 operational concern and not a QoS attribute used to evaluate RF cell design for real-time video performance.
Number of users is a capacity planning input, not an RF cell-planning attribute that directly measures or predicts the quality of real-time video streams.
Concept tested: QoS attributes for wireless real-time video
Source: https://www.cisco.com/c/en/us/td/docs/solutions/Enterprise/Mobility/vowlan/41dg/vowlan41dg-book/vowlan_ch2.html
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