NSE7 Troubleshooting and Diagnostics Practice Question
An administrator is configuring SD-WAN and wants to ensure that voice traffic uses the lowest latency link. Which two configurations are required to achieve this? (Choose TWO.)
⚠ Common exam trap
Watch out — candidates often confuse 'manual' strategy with 'best quality', assuming manual allows manual selection of the best link, but manual actually forces a fixed interface without dynamic SLA feedback.
Answer choices
Why each option matters
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
Configure a performance SLA with latency threshold
A performance SLA with a latency threshold allows FortiGate to measure real-time latency to a target server and mark the link quality. Option D is correct because an SD-WAN rule using the 'best quality' strategy will dynamically select the link with the lowest latency (as determined by the SLA) for voice traffic, ensuring optimal voice quality.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
Configure a static route for the voice subnet
Why it's wrong here
Static routes are not used in SD-WAN rule matching; SD-WAN rules override static routes.
- ✓
Configure a performance SLA with latency threshold
Why this is correct
The SLA measures latency and marks link quality.
- ✗
Set the SD-WAN rule to use 'manual' strategy
Why it's wrong here
Manual strategy uses a fixed interface, not based on latency.
- ✓
Create an SD-WAN rule that matches voice traffic and uses 'best quality' strategy
Why this is correct
'best quality' strategy selects the link with best SLA metrics (lowest latency).
- ✗
Enable NAT on the SD-WAN interface
Why it's wrong here
NAT is not required for latency-based routing.
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JA
Written by Johnson Ajibi, MSc IT Security
Senior Network & Security Engineer · founder of Courseiva
This NSE7 practice question is part of Courseiva's free Fortinet certification practice question bank. Courseiva provides original exam-style practice questions with explanations, topic-based practice, mock exams, readiness tracking, and study analytics to help learners prepare for the NSE7 exam.