The answer is that FortiLink must be enabled on the interface connecting to the FortiSwitch, and VLANs must be created on the FortiGate to be propagated via FortiLink. This is correct because FortiLink is the proprietary protocol that establishes a control channel between the FortiGate and FortiSwitch, allowing the FortiGate to act as the central management point for all switch configurations, including VLAN creation and assignment. On the Fortinet NSE 7 Advanced Security NSE7 exam, this concept tests your understanding of centralized VLAN management with FortiLink in a LAN edge deployment, often appearing in scenario-based questions where you must distinguish FortiLink from other features like 802.1X or STP. A common trap is assuming VLANs are configured directly on the switch, but the exam emphasizes that all VLAN definitions originate on the FortiGate and are pushed down. Memory tip: think of FortiLink as the "umbilical cord" — the FortiGate feeds VLANs to the switch, not the other way around.
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 FortiGate is deployed as a LAN edge switch with multiple FortiSwitch units connected. The administrator wants to configure VLANs and manage the switches centrally. Which TWO features must be enabled on the FortiGate to achieve this? (Select TWO.)
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
Create VLAN interfaces on the FortiGate and assign them to the FortiLink interface
Options A and D are correct. FortiLink is required for central management of FortiSwitch. The FortiGate must have a dedicated FortiLink interface (e.g., internal) configured under Network > Interfaces. VLANs are created on the FortiGate and propagated to switches via FortiLink.
Key principle: A trunk being up does not mean the VLAN is allowed across it. Always verify the allowed VLAN list and whether the VLAN exists on both switches.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
✗
LLDP-MED
Why it's wrong here
LLDP-MED is for voice VLAN, not central management.
✗
Configure a separate management VRF
Why it's wrong here
Management VRF is optional and not required for switch management.
✓
Create VLAN interfaces on the FortiGate and assign them to the FortiLink interface
Why this is correct
VLANs are defined on the FortiGate and communicated to switches via FortiLink.
Related concept
Access ports place end devices into a single VLAN.
✓
FortiLink on the interface connecting to the FortiSwitch
Why this is correct
FortiLink enables management and control of FortiSwitch from FortiGate.
Related concept
Access ports place end devices into a single VLAN.
✗
STP (Spanning Tree Protocol) on the FortiGate
Why it's wrong here
STP may be used but is not required for management.
Common exam traps
Common exam trap: an active trunk can still block the VLAN you need
A trunk being up does not prove every VLAN is crossing it. Check allowed VLAN lists, native VLAN mismatch, VLAN existence and access-port assignment.
Detailed technical explanation
How to think about this question
VLAN questions usually combine access-port and trunking clues. The key is to identify whether the issue is local to one switchport, caused by the trunk, or caused by the VLAN not existing where it needs to exist.
KKey Concepts to Remember
Access ports place end devices into a single VLAN.
Trunk ports carry multiple VLANs between switches.
Allowed VLAN lists decide which VLANs can cross a trunk.
Native VLAN mismatch can create confusing symptoms.
TExam Day Tips
→Use show vlan brief to verify access VLANs.
→Use show interfaces trunk to verify trunk state and allowed VLANs.
→Do not treat every same-VLAN issue as a routing problem.
Key takeaway
A trunk being up does not mean the VLAN is allowed across it. Always verify the allowed VLAN list and whether the VLAN exists on both switches.
Real-world example
How this comes up in practice
A help-desk technician troubleshoots why a newly connected PC cannot reach shared printers on the same floor. The cable is good, the switch port is active, but the PC is in VLAN 20 and the printers are in VLAN 10. The uplink trunk only allows VLAN 10. A trunk being up does not mean every VLAN crosses it.
What to study next
Got this wrong? Here's your next step.
Review VLAN allowed lists, native VLAN mismatch detection, and how to verify VLAN membership with show vlan brief and show interfaces trunk. Then practise related NSE7 questions on switching, trunking, and access-port configuration.
Advanced Networking and SD-WAN — This question tests Advanced Networking and SD-WAN — Access ports place end devices into a single VLAN..
What is the correct answer to this question?
The correct answer is: Create VLAN interfaces on the FortiGate and assign them to the FortiLink interface — Options A and D are correct. FortiLink is required for central management of FortiSwitch. The FortiGate must have a dedicated FortiLink interface (e.g., internal) configured under Network > Interfaces. VLANs are created on the FortiGate and propagated to switches via FortiLink.
What should I do if I get this NSE7 question wrong?
Review VLAN allowed lists, native VLAN mismatch detection, and how to verify VLAN membership with show vlan brief and show interfaces trunk. Then practise related NSE7 questions on switching, trunking, and access-port configuration.
What is the key concept behind this question?
Access ports place end devices into a single VLAN.
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