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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.

WLAN Design

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)
  • A
    95% (35)
  • C
    3% (1)
  • E
    3% (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.

AlatencyCorrect

Latency measures one-way delay; high latency in video teleconferencing degrades conversational quality and audio-video synchronization, making it a critical cell-planning attribute.

BjitterCorrect

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.

Cthroughput

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.

Dpacket lossCorrect

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.

Eclient association

Client association is a Layer 2 operational concern and not a QoS attribute used to evaluate RF cell design for real-time video performance.

Fnumber of users on the network

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

Topics

#video conferencing#cell planning#latency#jitter

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