nerdexam
Cisco

400-007 · Question #367

An enterprise service provider is designing the network for a customer who runs a video application in both a centralized and distributed fashion. The team has looked at the following parameters…

The correct answer is A. video traffic jitter and delay. For video application resource allocation models, QoS parameters such as jitter and delay are critical inputs that were missing from the analysis.

Gathering and Clarifying Requirements

Question

An enterprise service provider is designing the network for a customer who runs a video application in both a centralized and distributed fashion. The team has looked at the following parameters:

  • The available bandwidth for branches and the associated cost
  • Video resource cost
  • Usage patterns at hub-and-spoke sites.
  • Call agent bridge selection algorithm

Which key piece of information is missing and needs to be taken into consideration in order to determine the correct resource allocation model?

Options

  • Avideo traffic jitter and delay
  • Btype of video resources
  • Ctransport protocol and traffic engineering
  • Dnetwork management and monitoring

How the community answered

(67 responses)
  • A
    78% (52)
  • B
    6% (4)
  • C
    13% (9)
  • D
    3% (2)

Why each option

For video application resource allocation models, QoS parameters such as jitter and delay are critical inputs that were missing from the analysis.

Avideo traffic jitter and delayCorrect

Video traffic is highly sensitive to jitter and delay, and without knowing the acceptable thresholds and current network conditions for these metrics, it is impossible to correctly determine whether a centralized or distributed resource allocation model is appropriate. Jitter and delay directly affect video quality and call setup times, influencing whether local media resources must be deployed at branch sites rather than centralized.

Btype of video resources

The type of video resources is already implied by the listed parameters including video resource cost and call agent bridge selection algorithm, so it does not represent a missing consideration.

Ctransport protocol and traffic engineering

Transport protocol and traffic engineering are implementation-level details that follow after the resource allocation model is chosen, not inputs that drive the model selection decision.

Dnetwork management and monitoring

Network management and monitoring are operational concerns that do not directly influence the choice between centralized and distributed resource allocation models for video applications.

Concept tested: QoS jitter and delay requirements for video resource allocation

Source: https://www.cisco.com/c/en/us/td/docs/solutions/Enterprise/Video/VideoQoS.html

Topics

#video conferencing design#jitter and delay#QoS#resource allocation

Community Discussion

No community discussion yet for this question.

Full 400-007 Practice