FCSS_LED_AR-7.6 Exam Questions and Answers

QUESTION: 1

A network engineer is deploying FortiGate devices using zero-touch provisioning (ZTP). The devices must automatically connect to FortiManager and receive their configurations upon first boot. However, after powering on the devices, they fail to register with FortiManager.

What could be a possible cause of this issue?

The FortiGate device requires manual intervention to accept the FortiManager connection.
In this scenario, the ZTP process works only when devices are connected using a console cable.
The FortiGate device must be preloaded with a configuration file before ZTP can function.
The FortiManager IP address is not reachable over TCP port 541.

Answer(s): D

Explanation:

Zero-Touch Provisioning (ZTP) for FortiGate devices is handled throughFortiDeploy, which automatically connects a FortiGate toFortiManagerso the device can download configuration templates and be centrally managed.

For ZTP to work, the newly booted FortiGate must successfully reach FortiManager. One of thecritical requirementsis connectivity over theFGFM (FortiGateFortiManager) management protocol, which uses:

TCP Port 541

This is clearly stated in multiple Fortinet documents:

FortiGate Cloud Admin Guidelists port541as the management channel used for FortiGate FortiManager / FortiGate Cloud communications:"Management... Protocol: TCP, Port:541"

FortiOS Administration Guidealso confirms this:"FortiManager provides remote management of FortiGate devices overTCP port 541."

Since ZTP uses FortiDeploy to push the FortiManager IP to the device and relies on FGFM (port 541) for registration and configuration delivery,any failure on this port breaks the entire ZTP workflow.

Why option D is correct

If the FortiGate cannot reach FortiManager onTCP/541, itcannot register, cannot be authorized, and cannot receive its configuration -- leading to a ZTP failure.

This is themost common causein real deployments:

Firewall blocking TCP/541

Upstream NAT device not forwarding 541

ISP restrictions

Incorrect FortiManager IP or routing issue

ZTP device behind a network that does not allow outbound 541

Why the other options are incorrect

A . The FortiGate device requires manual intervention to accept the FortiManager connection.

Incorrect.

ZTP is built specifically to avoid manual intervention. Once the FortiDeploy key is used, the device auto-connects to FortiManager without needing local acceptance.

B . ZTP works only when devices are connected using a console cable.

Incorrect.

ZTP requiresno console cable-- that's the whole point. It relies on DHCP, WAN connectivity, and FortiDeploy auto-join.

C . The FortiGate device must be preloaded with a configuration file before ZTP can function.

Incorrect.

Preloading configuration defeats the purpose of ZTP.

ZTP delivers the initial configuration automatically from FortiManager using FortiDeploy.

LAN Edge 7.6 Architect Context

LAN Edge deployments often use FortiManager as the central orchestrator for:

FortiSwitch management via FortiLink

FortiAP wireless provisioning

SD-Branch configuration templates

Security Fabric automation

For all of this, ZTP enables remote sites to deploy FortiGate, FortiSwitch, and FortiAP withno on-site expertise.

If TCP/541 to FortiManager is blocked, the entire LAN Edge deployment pipeline fails, making optionDthe only valid and document-supported answer.

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QUESTION: 2

Which FortiGuard licenses are required for FortiLink device detection to enable device identification and vulnerability detection?

FortiGuard Vulnerability Management and FortiGuard Endpoit Protection
FortiGuard Threat Intelligence and FortiGuard loT Detection
FortiGuard Threat Intelligence and FortiGuard Endpoint Protection
FortiGuard Attack Surface Security and FortiGuard loT Detection

Answer(s): D

Explanation:

FortiLink device detection relies on FortiGate'sDevice IdentificationandIoT Detectioncapabilities to classify devices connected to FortiSwitch ports.

To enabledevice identificationandvulnerability detectionfor IoT/endpoint devices in LAN Edge deployments, FortiGate must subscribe to the correct FortiGuard services.

1. Required FortiGuard License for Device Identification (IoT Detection)

The FortiOS documentation clearly states:

"IoT detection service... requires anAttack Surface Security Rating service licenseto download the IoT signature package."

Additionally:

"The following settings are required for IoT device detection:

A validAttack Surface Security Rating service licenseto download the IoT signature package."

This service provides:

IoT signature package

IoT device classification

Device behavior profiling

This makesAttack Surface Securitymandatory for FortiLink device detection.

2. Required FortiGuard License for Device Vulnerability Detection

FortiOS further clarifies that IoT vulnerabilities require theIoT Detection license, which is included under the same Attack Surface service entitlement:

"To detect IoT vulnerabilities the FortiGate must have a validIoT Definitions license..."

The IoT Definitions license comeswith the Attack Surface Security Rating serviceand is used for:

Scanning connected devices

Identifying IoT/endpoint vulnerabilities

Reporting vulnerability severity

Enabling NAC-based remediation (VLAN steering, port isolation)

In LAN Edge Architect, this license combination is emphasized as a foundational requirement for:

FortiSwitch NAC

FortiLink device profiling

Automated quarantine actions

IoT device classification

Vulnerability-based segmentation

3.
Why the Correct Answer Is Option D

OptionDlists:

FortiGuard Attack Surface Security

FortiGuard IoT Detection

These are exactly the services required per FortiOS 7.4.1:

Attack Surface Security Rating provides IoT signature package + vulnerability data

IoT Detection (Definitions) enables actual device-type and vulnerability identification

Together they powerFortiLink Device DetectionandIoT Vulnerability Detection, which are essential LAN Edge security functions.

4.
Why Other Options Are Incorrect

A . Vulnerability Management + Endpoint Protection

Not used for FortiLink device detection; Endpoint detection relies on IoT service, not FortiClient.

B . Threat Intelligence + IoT Detection

Threat Intelligence (ThreatIntel DB) is used for FAZ IOC, not LAN Edge device detection.

C . Threat Intelligence + Endpoint Protection

Same issue--does not provide IoT device classification or vulnerability scanning.

LAN Edge 7.6 Architect Context Summary

In LAN Edge designs:

FortiGate acts as the controller for FortiSwitch via FortiLink.

Device detection is done at the FortiGate level using NAC/IoT signature capabilities.

Vulnerability detection enables dynamic segmentation decisions (e.g., move device to quarantine VLAN).

To support this, two licenses aremandatory:

Attack Surface Security(includes Security Rating + IoT Detection DB)

IoT Detection(part of the same entitlement, but explicitly required for vulnerability detection)

Thus the verified answer aligns perfectly with LAN Edge operational requirements and Fortinet documentation.

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QUESTION: 3

Refer to the exhibits.

The exhibits show the VAP configuration. Wi-Fi SSIDs. and zone table.

Which two statements describe how FortiGate handles VLAN assignment for wireless clients? (Choose two.)

FortiGate will load balance clients using VLAN 101 and VLAN 102 and assign them an IP address from the 10.0.3.0/24 subnet.
All clients connecting to the Corp Zone will receive an IP address from the 10.0.20.0/24 subnet.
Clients connecting to APs in the Floor 1 group will not be able to receive an IP address.
Clients connecting to APs in the Office group will be assigned to VLAN 102.

Answer(s): C,D

Explanation:

The VAP configuration clearly showsVLAN pooling using WTP-groups:

set vlan-pooling wtp-group config vlan-pool edit 101

set wtp-group "Floor_1"

edit 102

set wtp-group "Office"

How VLAN assignment works in this mode

VLAN-pooling with wtp-group modemeans:

Each AP group (WTP group) is tied to exactly one VLAN in the pool.

The FortiGate doesnot load balanceVLANs.

Instead, VLANs are mappedper AP group, not per client.

Now verify each answer option:

A . FortiGate will load balance clients using VLAN 101 and 102...

Incorrect.

FortiGatedoes NOT load-balance clientswhen vlan-pooling is set towtp-group.

Each AP group receivesonly the VLAN mapped to it.

B . All clients in the Corp zone get IPs from 10.0.20.0/24

Incorrect.

In the Wi-Fi zone table, onlyCorp.102has an IP subnet:

Corp.101 0.0.0.0/0.0.0.0(no IP assigned clients get no DHCP)

Corp.102 10.0.20.1/255.255.255.0

Thus, clients associated to VLAN 101cannotget IPs.

C . Clients connecting to APs in the Floor_1 group cannot receive an IP address

Correct.

Reason:

Floor_1 WTP-group VLAN101

VLAN 101 hasno IPin the Wi-Fi table 0.0.0.0/0.0.0.0

No DHCP =Clients receive no IP address

D . Clients connecting to APs in the Office group will be assigned to VLAN 102

Correct.

Reason:

Office WTP-group maps to VLAN102

VLAN 102 has subnet10.0.20.0/24

So Office group clients get an IP in that range

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QUESTION: 4

You've configured the FortiLink interface, and the DHCP server is enabled by default. The resulting DHCP server settings are shown in the exhibit.
What is the role of the vci-string setting in this configuration?

To ignore DHCP requests coming from FortiSwitch and FortiExtender devices.
To restrict the IP address assignment to devices that have FortiSwitch or FortiExtender as their hostname.
To connect, devices must match the VCI string; otherwise, they will not receive an IP address.
To reserve IP addresses for FortiSwitch and FortiExtender devices.

Answer(s): C

Explanation:

The DHCP configuration shows:

set vci-match enable set vci-string "FortiSwitch" "FortiExtender"

What this means

VCI = Vendor Class Identifier (DHCP option 60)

When vci-match is enabled, the DHCP server will only respond to DHCP requests from clients whose VCI string matches the configured vendor identifiers.

FortiSwitch and FortiExtender both send DHCP option 60 with:

"FortiSwitch"

"FortiExtender"

This is used in FortiLink deployments so only these devices receive IP addresses on the FortiLink network.

Therefore:

C . To connect, devices must match the VCI string; otherwise, they will not receive an IP address.

Correct.

This perfectly matches FortiGate FortiLink DHCP behavior.

Summary of incorrect options

A -- Ignore FortiSwitch/FortiExtender

Opposite behavior.

B -- Restrict based on hostname

VCI does NOT check hostname.

D -- Reserve IPs

No reservation occurs; it's filtering, not reserving.

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QUESTION: 5

Refer to the exhibits.

Examine the FortiGate RSSO configuration shown in the exhibit.

FortiGate is set up to use RSSO for user authentication. It is currently receiving RADIUS accounting messages through port3. The incoming RADIUS accounting messages contain the username in the User-Name attribute and group membership in the Class attribute. You must ensure that the users are authenticated through these RADIUS accounting messages and accurately mapped to their respective RSSO user groups.

Which three critical configurations must you implement on the FortiGate device? (Choose three.)

The RADIUS Attribute Value setting configured for an RSSO user group should match the class RADIUS attribute value in the RADIUS accounting message.
RSSO user groups should be assigned to all firewall policies.
Device detection and Security Fabric Connection should be enabled on port3
The sso-attribute CLI setting in the RSSO agent configuration should be set to Class.
The rsso-endpoint-attribute CLI setting in the RSSO agent configuration should be set to User- Name.

Answer(s): A,D,E

Explanation:

The problem states:

FortiGate receivesRADIUS accounting messagesonport3.

User-Nameattribute contains the username.

Classattribute contains the group membership.

Goal: authenticate users through RSSO and map them to the correct user groups.

To achieve this, three critical components must be configured:

A . RADIUS Attribute Value in the RSSO group must match the Class attribute

This is mandatory because:

RSSO user groups on FortiGate match users based onthe value inside the RADIUS attribute(usually Class).

For group assignment to work, FortiGate must compare:

RSSO User Group RADIUS Class Attribute Value

This isexactly how FortiGate maps RSSO users to groups.
D . RSSO agent's sso-attribute must be set to Class

Thesso-attributedefineswhich RADIUS attribute contains the group information.

Because group membership is carried in:

Class attribute

You must configure:

config user radius set sso-attribute Class end

This tells FortiGate:

"Use the Class attribute to derive user group membership."
E . rsso-endpoint-attribute must be set to User-Name

This identifieswhich RADIUS attributecarries the actualusername.

In this scenario:

RADIUS accounting messages contain the username inUser-Name.

So the correct setting is:

config user radius set rsso-endpoint-attribute User-Name end
This ensures the RSSO user object uses the correct username.

Incorrect Options Explained

B . Assign RSSO user groups to all firewall policies

Not required.

You only assign them to policies where RSSO authentication is used.

C . Device detection and Security Fabric Connection should be enabled on port3

Totally irrelevant to RSSO.

RSSO only needs RADIUS accounting, not device detection or Fabric services.

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QUESTION: 6

What is the primary function of FortiLink NAC in a LAN environment?

To extend security policies across FortiGate firewalls only
To automate device onboarding and verify security posture
To manage FortiSwitch devices and apply manual firewall rules
To ensure devices are manually placed in VLANs based on their user roles

Answer(s): B

Explanation:

FortiLink NACis the NAC (Network Access Control) engine built into FortiGate when it manages FortiSwitch devices.

It performs:

Automated device onboarding

Automatically detects new devices connecting to switches.

Uses MAC, vendor, DHCP fingerprinting, or IoT database to classify devices.

No manual VLAN assignment required.

Security posture verification

Works with FortiClient EMS, ZTNA tags, IoT detection.

Applies policies based on:

Device type

User role

Endpoint compliance

IoT vulnerability status

Dynamic VLAN assignment

Automatically moves devices into proper VLANs, quarantine networks, or guest zones.

Integration with LAN Edge & Zero Trust

Uses FortiGate + FortiSwitch + FortiAP to enforce zero-trust access.

This matches the LAN Edge 7.6 Architect explanation of FortiLink NAC.

Why other answers are wrong

A . Extend security policies across FortiGate firewalls

Not NAC. That refers to Security Fabric or SD-WAN.

C . Apply manual firewall rules

FortiLink NAC is specifically designed toautomateaccess control.

D . Manually place devices in VLANs

NAC eliminates manual VLAN assignment -- it is dynamic.

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QUESTION: 7

Refer to the exhibits.

Examine the FortiGate configuration, FortiAnalyzer logs, and FortiGate widget shown in the exhibits.

Security Fabhc quarantine automation has been configured to isolate compromised devices automatically. FortiAnalyzer has been added to the Security Fabric, and an automation stitch has been configured to quarantine compromised devices.

To test the setup, a device with the IP address 10.0.2.1 that is connected through a managed FortiSwitch attempts to access a malicious website. The logs on FortiAnalyzer confirm that the event was recorded, but the device does not appear in the FortiGate quarantine widget.

Which two reasons could explain why FortiGate is not quarantining the device? (Choose two.)

The IOC action should include only the FortiSwitch in the quarantine.
The SSL inspection should be set to deep-Inspection
The malicious website is not recognized as an indicator of compromise (IOC) by FortiAnalyzer.
The threat detection services license is missing or invalid under FortiAnalyzer.

Answer(s): C,D

Explanation:

In this scenario:

FortiGate + FortiAnalyzer are part of theSecurity Fabric

AnAutomation Stitchis configured:

Trigger:Compromised Host High(IOC from FortiAnalyzer)

Action:Quarantine on FortiSwitch + FortiAP

A test device10.0.2.1visits a malicious website.

FortiAnalyzer logs show the event, butFortiGate does NOT quarantine the device.

This means theautomation did not receive an IOC trigger, OR theFabric did not classify it as a compromise.

Let's evaluate each answer option.
C. The malicious website is not recognized as an indicator of compromise (IOC) by FortiAnalyzer.

Correct.

For FortiGate to quarantine a device:

FortiAnalyzer must classify the event as aCompromised Host High / Medium / Critical

FortiAnalyzer must generate anIOC event

FortiGate must receive that IOC through the Fabric

Even though the FAZ log shows:

Action = blocked

Category = Malicious Websites

That doesNOTautomatically mean an IOC was generated.

A blocked website event isnot always an IOCunless:

It is included in theIOC database

FAZ'sAnalytics / UTM / IOCengine marks it as a compromise

Thus, if FAZ only logs a "Malicious Website" event butdoes not classify it as an IOC,

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QUESTION: 8

When the MAC address of a device is placed in quarantine on FortiSwitch, what happens to its egress traffic?

Traffic is sent to an access VLAN.
Traffic is assigned to the native VLAN.
Traffic is sent as untagged traffic.
Traffic is sent to an allowed VLAN.

Answer(s): A

Explanation:

When a device'sMAC address is quarantinedon a FortiSwitch (via FortiLink NAC, fabric automation, or manual quarantine), FortiSwitch enforces quarantine using thequarantine VLAN, also called theaccess VLANinside FortiSwitch NAC operations.

FortiSwitch behavior is defined in LAN Edge documentation:

Quarantined devices are moved into an"access VLAN" reserved for isolation.

This VLAN isstatically defined on the FortiGate NAC policy, and switch ports dynamically reassign the quarantined MAC into that VLAN.

All egress traffic from the quarantined MAC is forced into this VLAN, preventing access to the production network.

Thus, the correct description is:

Traffic is sent to an access VLAN.

Options B, C, and D are incorrect because:

Quarantine doesnotreassign to native VLAN.

It doesnotsend untagged traffic arbitrarily.

It doesnotforward traffic to allowed VLANs

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Fortinet FCSS_LED_AR-7.6 Exam (page: 1)
Fortinet NSE 6 - LAN Edge 7.6 Architect
Updated on: 06-Dec-2025

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Fortinet FCSS_LED_AR-7.6 Exam (page: 1)
Fortinet NSE 6 - LAN Edge 7.6 Architect
Updated on: 06-Dec-2025