210-065 Question #68: Real Exam Question with Answer & Explanation

Question

Options

• AConfigure bandwidth management features to smooth bursty traffic and mitigate end-to-end
• BAssign a high priority to transactional traffic to maintain quality of business traffic.
• CKeep video traffic on the low latency queue and move voice traffic to a lower-priority queue.
• DApply bandwidth control features that will guarantee bandwidth for the maximum possible amount
• EAssign both video and voice traffic to use the highest-priority queue.

Explanation

Adding video to a converged network requires QoS designs that smooth bursty video traffic and guarantee dedicated bandwidth to maintain consistent stream quality.

Common mistakes.

• B. Elevating transactional data traffic to a high priority would starve real-time media streams of the low-latency, low-jitter treatment they require, degrading both VoIP and video quality.
• C. Voice is more delay-sensitive than video and should reside in the strict priority low-latency queue; moving voice to a lower-priority queue would directly violate standard QoS design guidelines for converged networks.
• E. Placing both voice and video in the same highest-priority queue creates contention between the two traffic classes and prevents proper differentiation of their distinct latency, jitter, and bandwidth requirements.

Concept tested. QoS design for video on a converged VoIP network

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

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