- A
Ensure that the FortiGate has a default route via each SD-WAN member.
Why wrong: SD-WAN rules override routing decisions; default routes are not required for SD-WAN to function.
- B
Check that the SD-WAN rule has a higher priority than other rules that might match the traffic.
SD-WAN rules are evaluated in order; a rule with higher priority (lower number) takes precedence.
- C
Disable the other SD-WAN members temporarily to force traffic to the desired link.
Why wrong: This is a test but not a proper troubleshooting step; it does not identify the root cause.
- D
Confirm that the VoIP subnet is included in the SD-WAN zone.
Why wrong: SD-WAN zones are not used; SD-WAN rules use members directly or via device groups.
- E
Verify that the performance SLA is correctly configured and the VoIP traffic matches the SLA's server.
The best-quality strategy requires the SLA to be matched to the traffic; if the SLA is not configured for the VoIP traffic's destination, the strategy may not work.
NSE7 Advanced Networking and SD-WAN Practice Question
This NSE7 practice question tests your understanding of advanced networking and sd-wan. The scenario asks you to isolate a root cause — eliminate options that address a different problem before choosing. 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 admin is troubleshooting an SD-WAN rule that should steer VoIP traffic to a low-latency link. The rule matches traffic from the VoIP subnet to any destination and uses the 'best-quality' strategy with SLA monitoring. However, traffic is still using the other link. Which TWO checks should the admin perform? (Choose two.)
Clue words in this question
Noticing these words before you look at the options changes how you read each choice.
Clue:
"best"Why it matters: Signals that multiple options may be partially correct. Choose the option that most directly solves the exact problem described, not the one that sounds most complete.
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
Check that the SD-WAN rule has a higher priority than other rules that might match the traffic.
Key principle: Count usable hosts — not total addresses — and remember that the network and broadcast addresses are not available to hosts in standard IPv4 subnets.
Subnetting questions test whether you can identify the network, broadcast address, usable range, mask and correct subnet. Slow down enough to calculate the block size correctly.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
Ensure that the FortiGate has a default route via each SD-WAN member.
Why it's wrong here
SD-WAN rules override routing decisions; default routes are not required for SD-WAN to function.
- ✓
Check that the SD-WAN rule has a higher priority than other rules that might match the traffic.
Why this is correct
SD-WAN rules are evaluated in order; a rule with higher priority (lower number) takes precedence.
Clue confirmation
The clue word "best" in the question point toward this answer.
Related concept
CIDR notation defines the prefix length.
- ✗
Disable the other SD-WAN members temporarily to force traffic to the desired link.
Why it's wrong here
This is a test but not a proper troubleshooting step; it does not identify the root cause.
- ✗
Confirm that the VoIP subnet is included in the SD-WAN zone.
Why it's wrong here
SD-WAN zones are not used; SD-WAN rules use members directly or via device groups.
- ✓
Verify that the performance SLA is correctly configured and the VoIP traffic matches the SLA's server.
Why this is correct
The best-quality strategy requires the SLA to be matched to the traffic; if the SLA is not configured for the VoIP traffic's destination, the strategy may not work.
Clue confirmation
The clue word "best" in the question point toward this answer.
Related concept
CIDR notation defines the prefix length.
Common exam traps
Common exam trap: usable hosts are not the same as total addresses
Subnetting questions often tempt you into counting all addresses. In normal IPv4 subnets, the network and broadcast addresses are not usable host addresses.
Detailed technical explanation
How to think about this question
Subnetting questions test whether you can identify the network, broadcast address, usable range, mask and correct subnet. Slow down enough to calculate the block size correctly.
KKey Concepts to Remember
- CIDR notation defines the prefix length.
- Block size helps identify subnet boundaries.
- Network and broadcast addresses are not usable hosts in normal IPv4 subnets.
- The required host count determines the smallest suitable subnet.
TExam Day Tips
- Write the block size before choosing the subnet.
- Check whether the question asks for hosts, subnets or a specific address range.
- Do not confuse /24, /25, /26 and /27 host counts.
Key takeaway
Count usable hosts — not total addresses — and remember that the network and broadcast addresses are not available to hosts in standard IPv4 subnets.
Real-world example
How this comes up in practice
A small business has 20 workstations on the 192.168.1.0/24 network and one public IP from its ISP. The router uses PAT (NAT overload) so all 20 devices share one public address using different source ports. NAT questions test whether you understand the four address terms and which direction each translation applies.
What to study next
Got this wrong? Here's your next step.
Review block sizes, usable host formulas (2^n − 2), and how to find network and broadcast addresses for /24 through /30. Then practise related NSE7 subnetting questions on CIDR, address ranges, and subnet selection.
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Advanced Networking and SD-WAN — study guide chapter
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FAQ
Questions learners often ask
What does this NSE7 question test?
Advanced Networking and SD-WAN — This question tests Advanced Networking and SD-WAN — CIDR notation defines the prefix length..
What is the correct answer to this question?
The correct answer is: Check that the SD-WAN rule has a higher priority than other rules that might match the traffic.
What should I do if I get this NSE7 question wrong?
Review block sizes, usable host formulas (2^n − 2), and how to find network and broadcast addresses for /24 through /30. Then practise related NSE7 subnetting questions on CIDR, address ranges, and subnet selection.
Are there clue words in this question I should notice?
Yes — watch for: "best". Signals that multiple options may be partially correct. Choose the option that most directly solves the exact problem described, not the one that sounds most complete.
What is the key concept behind this question?
CIDR notation defines the prefix length.
About these practice questions
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Last reviewed: Jun 21, 2026
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.
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