300-415 Question #6: Real Exam Question with Answer & Explanation

The correct answer is D: centralized data. To ensure voice packets use a link meeting a specific latency requirement across the SD-WAN fabric, a centralized data policy is used.

Policies

Question

A voice packet requires a latency of 50 msec. Which policy is configured to ensure that a voice packet is always sent on the link with less than a 50 msec delay?

Options

Alocalized data
Blocalized control
Clocalized control
Dcentralized data

Explanation

To ensure voice packets use a link meeting a specific latency requirement across the SD-WAN fabric, a centralized data policy is used.

Common mistakes.

A. Localized data policies are applied at a specific WAN Edge and handle local traffic manipulation (e.g., QoS, policing), not dynamic path selection based on network-wide performance metrics.
B. Localized control policies manipulate routing at a specific WAN Edge, not for dynamic path selection based on application requirements across the overlay.
C. Localized control policies manipulate routing at a specific WAN Edge, not for dynamic path selection based on application requirements across the overlay.

Concept tested. Centralized data policy for application-aware routing

Reference. https://www.cisco.com/c/en/us/td/docs/routers/sdwan/configuration/sdwan-xe-gs-book/sdwan-xe-gs-book_chapter_0100.html#wp1067201633

Topics

#SD-WAN Policies#Centralized Data Policy#Application-Aware Routing#SLA Path Selection

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