NSE7 Advanced Networking and SD-WAN Practice Question
An administrator wants to load balance traffic across two WAN links by session count. Which SD-WAN load balancing algorithm should they use?
⚠ Common exam trap
It's easy for candidates to confuse 'session count' with 'volume' or 'spillover,' assuming that any load balancing algorithm that distributes traffic equally must use data volume or bandwidth thresholds, rather than recognizing that Sessions is the explicit algorithm for session-based distribution.
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
✓
Sessions
The Sessions algorithm distributes new sessions across WAN links based on the current session count, ensuring each link handles a roughly equal number of active sessions. This directly matches the administrator's requirement to load balance by session count, as it uses the session counter as the metric for link selection.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✓
Sessions
Why this is correct
The sessions algorithm distributes sessions based on the number of active sessions per interface.
- ✗
Spillover
Why it's wrong here
Spillover sends traffic to a secondary link only when the primary reaches a threshold.
- ✗
Lowest-cost
Why it's wrong here
Lowest-cost selects the link with the lowest cost based on SLA metrics.
- ✗
Volume
Why it's wrong here
Volume balances by traffic volume, not session count.
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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.