300-320 · Question #229
300-320 Question #229: Real Exam Question with Answer & Explanation
The correct answer is C: Which traffic model is in use, the flow direction for the traffic streams between the application. When designing for video traffic, the network designer must understand which traffic model is in use and the flow direction of traffic streams between the application and users. This directly influences QoS policy, bandwidth provisioning, and topology decisions. Video traffic can
Question
Options
- AWhile it is expected that the sum of all forms of video traffic will grow to over 90% by 2013, the
- BAvoid bandwidth starvation due to video traffic by preventing and controlling the wide adoption
- CWhich traffic model is in use, the flow direction for the traffic streams between the application
- DStreaming video applications are sensitive to delay while interactive video applications, using
Explanation
When designing for video traffic, the network designer must understand which traffic model is in use and the flow direction of traffic streams between the application and users. This directly influences QoS policy, bandwidth provisioning, and topology decisions. Video traffic can be client-server, peer-to-peer, multicast, or broadcast depending on the application. Choice A is misleading because even if video dominates bandwidth, the designer must plan for it rather than dismiss it. Choice B is incorrect - blocking video adoption is not a valid design approach; instead, the network should be designed to support it. Choice D is incorrect because it reverses the characteristics: streaming video is typically more tolerant of delay (buffered) while interactive video (e.g., video conferencing) is highly sensitive to delay, jitter, and loss.
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