Question 1easymultiple choice
Review the full routing breakdown →Question 785 of 1,000
Quick Answer
The correct answer is to configure static routes with equal distance and enable ECMP. This works because Equal-Cost Multi-Path routing allows a FortiGate to load balance outbound traffic across two ISPs by treating multiple static routes to the same destination (e.g., 0.0.0.0/0) as equally valid when they share the same administrative distance, such as 10. The FortiGate then distributes sessions across both WAN interfaces using a hash-based algorithm, typically derived from source and destination IP addresses, ensuring traffic is spread without requiring dynamic routing protocols. On the Fortinet NSE 4 exam, this scenario tests your understanding of how ECMP differs from policy-based routing or failover configurations—a common trap is setting different distances, which would create an active-passive setup instead of load balancing. A reliable memory tip is “same distance, same destination, ECMP distribution.”
NSE4 System and Network Administration Practice Question
This NSE4 practice question tests your understanding of system and network administration. 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 FortiGate is configured with two WAN interfaces (port1 and port2) connected to different ISPs. The administrator wants to load-balance outbound traffic across both links using equal-cost routes. Which routing configuration should be applied?
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 static routes with equal distance and enable ECMP.
Option C is correct because ECMP (Equal-Cost Multi-Path) routing allows a FortiGate to load-balance outbound traffic across multiple interfaces when static routes have the same distance (administrative distance) and destination. By configuring two static routes with equal distance (e.g., 10) to 0.0.0.0/0 via port1 and port2, the FortiGate automatically distributes sessions across both links using a hash-based algorithm (e.g., source-destination IP), achieving the desired load balancing without dynamic routing protocols.
Key principle: Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option.
Common exam traps
Common exam trap: answer the scenario, not the keyword
The trap here is that candidates confuse 'different distances' (which creates failover) with 'equal distances' (which enables load balancing), often selecting option D because they think varying metrics distributes traffic, but in reality, only equal administrative distances trigger ECMP load sharing.
Detailed technical explanation
How to think about this question
ECMP in FortiGate uses a per-session load-balancing method based on a hash of source IP, destination IP, protocol, and ports (for TCP/UDP), ensuring that all packets of a single session use the same path to avoid out-of-order delivery. The default ECMP load-balancing algorithm on FortiGate is 'source-destination-IP' (configurable via 'config system settings' → 'set v4-ecmp-mode'), and it supports up to 255 equal-cost routes. In real-world scenarios, ECMP is ideal for multi-WAN setups where ISPs provide symmetric bandwidth, but asymmetric routing can occur if return traffic is not handled correctly (e.g., via policy routes or NAT).
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.
TExam Day Tips
- 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 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.
Identify which exam domain this question belongs to, review the core concept, then practise similar questions from the same domain.
- →
System and Network Administration — study guide chapter
Learn the concepts, then practise the questions
- →
System and Network Administration practice questions
Targeted practice on this topic area only
- →
All NSE4 questions
1,000 questions across all exam domains
- →
Fortinet NSE 4 Network Security Professional NSE4 study guide
Full concept coverage aligned to exam objectives
- →
NSE4 practice test guide
How to use practice tests most effectively before exam day
Related practice questions
Related NSE4 practice-question pages
Use these pages to review the topic behind this question. This is how one missed question becomes focused revision.
System and Network Administration practice questions
Practise NSE4 questions linked to System and Network Administration.
Firewall Policies and NAT practice questions
Practise NSE4 questions linked to Firewall Policies and NAT.
Authentication and VPN practice questions
Practise NSE4 questions linked to Authentication and VPN.
Security Profiles practice questions
Practise NSE4 questions linked to Security Profiles.
High Availability and Diagnostics practice questions
Practise NSE4 questions linked to High Availability and Diagnostics.
NSE4 fundamentals practice questions
Practise NSE4 questions linked to NSE4 fundamentals.
NSE4 scenario practice questions
Practise NSE4 questions linked to NSE4 scenario.
NSE4 troubleshooting practice questions
Practise NSE4 questions linked to NSE4 troubleshooting.
Practice this exam
Start a free NSE4 practice session
Short sessions build daily habit. Longer sessions build exam-day stamina. Try a timed session to simulate real conditions.
FAQ
Questions learners often ask
What does this NSE4 question test?
System and Network Administration — This question tests System and Network Administration — Read the scenario before looking for a memorised answer..
What is the correct answer to this question?
The correct answer is: Configure static routes with equal distance and enable ECMP. — Option C is correct because ECMP (Equal-Cost Multi-Path) routing allows a FortiGate to load-balance outbound traffic across multiple interfaces when static routes have the same distance (administrative distance) and destination. By configuring two static routes with equal distance (e.g., 10) to 0.0.0.0/0 via port1 and port2, the FortiGate automatically distributes sessions across both links using a hash-based algorithm (e.g., source-destination IP), achieving the desired load balancing without dynamic routing protocols.
What should I do if I get this NSE4 question wrong?
Identify which exam domain this question belongs to, review the core concept, then practise similar questions from the same domain.
What is the key concept behind this question?
Read the scenario before looking for a memorised answer.
About these practice questions
Courseiva creates original exam-style practice questions with explanations and wrong-answer analysis. It does not publish real exam questions, exam dumps, or protected exam content. Learn why practice questions differ from exam dumps →
Last reviewed: Jun 24, 2026
This NSE4 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 NSE4 exam.
Question Discussion
Share a tip, memory trick, or ask about the reasoning behind this question. Do not post real exam questions, leaked content, braindumps, or copyrighted exam material. Comments are moderated and may be removed without notice.
Sign in to join the discussion.