The correct answer is that new sessions are sent to port2 until port1 drops below the threshold. This occurs because the spillover load balancing behavior prioritizes a preferred member—typically the one with the lowest cost or listed first—and directs all new traffic to it until its bandwidth usage exceeds the configured spillover threshold. Once that threshold is breached, the algorithm automatically spills over new sessions to the next available member, port2, and continues to do so until port1’s traffic falls back under 100 Mbps. On the Fortinet NSE 7 Advanced Security NSE7 exam, this concept tests your understanding of how SD-WAN rules interact with bandwidth thresholds, often appearing in scenario-based questions where a single member is saturated. A common trap is assuming traffic is load-balanced evenly from the start, but spillover is strictly sequential until a threshold is hit. Memory tip: think of a bucket filling to the brim—once it overflows, the spill goes to the next bucket until the first is drained below the rim.
NSE7 Advanced Networking and SD-WAN Practice Question
This NSE7 practice question tests your understanding of advanced networking and sd-wan. This is a configuration task: choose the command set that satisfies every stated requirement. Small differences — like 'secret' vs 'password' or 'transport input ssh' vs 'all' — change whether the answer is correct. After answering, compare your reasoning against the explanation and wrong-answer breakdown below. Once you have made your selection, read the full explanation to reinforce the concept and understand why each distractor is designed to mislead on exam day.
A network administrator configures an SD-WAN zone with two members (port1 and port2) and sets the load balancing algorithm to 'spillover'. The spillover threshold is set to 100 Mbps on port1. If traffic reaches 120 Mbps on port1, what happens to new sessions?
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
New sessions are sent to port2 until port1 drops below the threshold
Spillover algorithm sends traffic to the preferred member (lowest cost or first in order) until its bandwidth exceeds the threshold. When the threshold is exceeded, new sessions are sent to the next available member. Port2 will handle new sessions until port1 drops below the threshold.
Key principle: Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
✗
All traffic is dropped because the threshold exceeded
Why it's wrong here
Spillover does not drop traffic; it moves new sessions to other members.
✓
New sessions are sent to port2 until port1 drops below the threshold
Why this is correct
Correct spillover behavior.
Related concept
Read the scenario before looking for a memorised answer.
✗
Port1 continues to receive all new sessions but packets are queued
Why it's wrong here
Spillover does not queue; it redirects new sessions.
✗
New sessions are distributed equally between port1 and port2
Why it's wrong here
Equal distribution is not spillover behavior.
Common exam traps
Common exam trap: answer the scenario, not the keyword
Many certification questions include familiar terms but test a specific constraint. Read the exact wording before choosing an answer that is generally true but wrong for this case.
Detailed technical explanation
How to think about this question
This question should be treated as a scenario, not a definition check. Identify the problem, the constraint and the best action. Then compare each option against those facts.
KKey Concepts to Remember
Read the scenario before looking for a memorised answer.
Find the constraint that changes the correct option.
Eliminate answers that are true in general but not in this case.
Use explanations to understand the rule behind the answer.
TExam Day Tips
→Underline the problem statement mentally.
→Watch for words such as best, first, most likely and least administrative effort.
→Review why wrong options are wrong, not only why the correct option is correct.
Key takeaway
Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option.
Real-world example
How this comes up in practice
A practitioner preparing for the NSE7 exam encounters this exact type of scenario on the job. The correct answer here is not the most general option — it is the best answer for the specific constraint described. Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option. Real exam questions reward reading the full scenario before eliminating options, because the constraint defines which answer fits.
What to study next
Got this wrong? Here's your next step.
Identify which NSE7 exam domain this question belongs to, then review the specific concept being tested. Practise related questions in that domain and focus on understanding why each wrong answer is tempting — not just why the correct answer is right.
Advanced Networking and SD-WAN — This question tests Advanced Networking and SD-WAN — Read the scenario before looking for a memorised answer..
What is the correct answer to this question?
The correct answer is: New sessions are sent to port2 until port1 drops below the threshold — Spillover algorithm sends traffic to the preferred member (lowest cost or first in order) until its bandwidth exceeds the threshold. When the threshold is exceeded, new sessions are sent to the next available member. Port2 will handle new sessions until port1 drops below the threshold.
What should I do if I get this NSE7 question wrong?
Identify which NSE7 exam domain this question belongs to, then review the specific concept being tested. Practise related questions in that domain and focus on understanding why each wrong answer is tempting — not just why the correct answer is right.
What is the key concept behind this question?
Read the scenario before looking for a memorised answer.
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Question Discussion
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