Fortinet Fortinet NSE 6 - LAN Edge 7.6 Architect FCSS_LED_AR-7.6 Exam Dumps: Updated Questions & Answers (December 2025)

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 (FortiGate–FortiManager) 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.

On FortiLink, FortiGate’s built-in DHCP server is what gives FortiSwitch its IP so it can come under management. For automatic FortiSwitch onboarding, the DHCP server is usually set with:

set vci-match enable

set vci-string "FortiSwitch" "FortiExtender"

In the exhibit, the DHCP server for fortilink has:

set vci-match enable

set vci-string "FortiExtender"

Because theVCI string doesn’t include “FortiSwitch”, DHCP offers are only sent to clients whose Vendor Class Identifier matchesFortiExtender. The FortiSwitch never receives an IP, so it staysOffline.

OptionBis wrong: member "port4" matches the physical cabling in the topology.

OptionCis fine: FortiLink can be anaggregateinterface, not only physical.

OptionA(ip-managed-by-fortiipam) is unrelated; FortiIPAM isn’t required here.

Let’s verify each protocol:

C. FortiGate uses the FortiLink protocol to establish communication with FortiSwitch.✔

FortiLink is themanagement and control protocol, encapsulated over:

LLDPfor discovery

CAPWAP (UDP/5246–5247)for control channel

DHB (Device Handshake Bus)inside CAPWAP frames

Thus,FortiLink is required.

D. CAPWAP is used to establish the control channel between FortiSwitch and FortiGate.✔

Although CAPWAP is commonly associated with FortiAP, FortiSwitchalso uses CAPWAPinternally when managed by FortiGate.

This is documented in:

FortiSwitch Administration Guide

LAN Edge deployment guide

SoD is correct.

B. UHTTPS is used by FortiGate to securely manage and configure FortiSwitch devices.✔

FortiLink session actually uses:

Encrypted CAPWAP (over DTLS)

UHTTPS (port 4433)for secure configuration exchanges

This protocol is mandatory for:

Switch configuration synchronization

Firmware upgrade

NAC data exchange

VLAN provisioning

ThereforeUHTTPS is indeed one of the key protocols.

Why the incorrect options are wrong:

A. SNMP can be used by FortiGate to manage FortiSwitch.✖

FortiGate doesnotuse SNMP to manage FortiSwitch.

SNMP is for monitoring by external systems, not for FortiLink control.

E. IGMP is required for management.✖

IGMP is a multicast protocol, irrelevant for FortiGate–FortiSwitch management.

The FortiOS documentation explicitly states that a CSR used for certificate signing must contain accurate and valid fields, especially:

Common Name (CN)

Organization (O)

Country (C)

Public key parameters

According to the FortiGate certificate section:

Incorrect CSR field information can cause the CA to reject the request.

Reasons include:

The CA validates identity and organizational information.

Missing or malformed data invalidates PKI requirements.

The CSR is not corrected automatically by the CA.

Therefore:

✔A is correct.

Options B–D contradict PKI principles:

B is false: CAs do not issue certificates with mismatched identity fields for public trust.

C is false: CSR fields are not only for internal use; they define certificate identity.

D is false: CAs do not auto-correct CSR fields.

In user certificates used with FortiGate / FortiAuthenticator / SSL-VPN / 802.1X, the following attributes are important:

Subject field & UPN

Provide a unique identity for the user (CN and/or UPN).

FortiGate can use theSAN/UPNfield for LDAP-integrated certificate authentication.

Expiration date

Limits how long the certificate is valid, enforcing lifecycle and rotation.

CRL URL & OCSP URL

Tell FortiGate (or any relying party)where to check if the certificate has been revoked.

Enablesnear real-time revocationusing OCSP or periodic CRL downloads instead of relying only on expiration.

By carefully configuring these fields:

The certificate uniquely and correctly identifies the user.

Relying systems can performaccurate and timely revocation checks, improving security.

Why other options are wrong:

A: It does the opposite—CRL/OCSP increase automation, not manual revocation.

B: These attributes do not inherently limit a cert to specific devices; that’s done via key usage, EKU, or device certs.

D: They don’t “ensure universal validity”; they make the certprecisely boundto one identity with enforceable lifetime and revocation.

From the exhibits:

The AP profile shows:

SSIDs: Tunnel | Bridge | Manual

The current setting isBridge, not Manual.

WhenBridgeorTunnelis selected, the AP profiledoes NOT automatically broadcast SSIDsunless the corresponding VAPs were explicitly mapped in the AP profile.

FortiManager SSID profiles are created, but unless these are explicitly applied underManual SSIDs selection, the AP will not broadcast any SSID.

Fortinet documentation states:

“To control which SSIDs an AP broadcasts, the AP Profile must have SSIDs set toManual, and the desired SSIDs must be selected.”

Therefore, to make the AP broadcast the intended SSIDs:

✔You must switch the SSIDs setting to Manual, and manually select the SSIDs (CompanyPrinters, Student01, Guest-CorpPort, PSK).

Why the other options are incorrect:

A. Adjust AP profile to avoid mixing bridge/tunnelMixed modes ARE supported. Not the issue.

B. Change platformThe platform (FAP231F) already supports all listed SSIDs.

D. Set transmit power mode to autoPower settings have nothing to do with SSID broadcasting.

In an SD-Branch deployment (FortiGate + FortiSwitch + FortiAP),FortiAIOps:

Collects telemetry and logs from Fabric devices

Usesmachine-learning / AI analyticsto:

Spot anomalies (latency, packet loss, RF issues, misconfigurations)

Highlight root causes

Proposeoptimization recommendations(e.g., channel changes, power tuning, config fixes)

It doesnot:

Automatically disable devices (Afalse)

Replace SD-WAN config or all routing (Cfalse)

Fixallissues with zero human input (Dis marketing fantasy, not reality)

From the exhibits:

FortiSwitch Ports viewshows:

port2

Mode: Static

Native VLAN: Students

Allowed VLANs: quarantine.fortilink (quarantine)

NAC policy “Training”:

Switch FortiLink: fortilink

Category:Device

Matching criteria:

MAC Address: 70:88:6b:8c:4b:0e (enabled)

Operating System:Linux(enabled)

Switch Controller Action:

Assign VLAN = Students

Bounce Port = enabled

Design intent:

Device with that MAC + OS Linux, when plugged intoport2, should be dynamically moved to VLANStudentsby the NAC policy.

Why it doesn’t work now

On FortiLink NAC,dynamic NAC decisions only apply on ports whose “Access Mode” is set to NAC:

NAC mode = FortiGate controls theonboarding VLAN, evaluates NAC policies, and then dynamically reassigns the switch port VLAN (access, quarantine, etc.).

Static mode(what we see on port2) means the port just uses its configurednative/allowed VLANs, andno NAC classificationhappens.

Right now:

port2 is astatic access portwith Native VLAN = Students.

The NAC policy exists, butFortiSwitch is not in NAC enforcement mode on that port, so the policy is never evaluated for traffic on port2.

Therefore, themissing configurationis:

Setport2toNAC mode(sometimes called “Access mode: NAC” or “NAC LAN edge port”).

Once port2 is changed to NAC mode:

Device initially lands in the onboarding/quarantine VLAN.

FortiGate collects device info (MAC, OS, etc.).

NAC policy “Training” matches MAC + Linux.

Switch controller actionAssign VLAN = Studentsis applied.

Port is bounced (if configured), bringing the device back up in VLAN Students.

Why the other options are wrong

B. MAC or OS misconfigured

Possible in general, but the question asks forwhich configuration is missing, and the exhibits clearly focus on port mode. Also, even with wrong MAC/OS, the port would still be in NAC mode; here NAC isn’t even active.

C. Port Policy mode

Port policy (edge/trunk) is separate from NAC; NAC requires the specificNAC access mode.

D. Students VLAN should be Allowed VLANs instead of Native VLAN

For an access port, having Students as thenative VLANis correct. NAC policy’s Assign VLAN will set that as access VLAN; no need to make it an allowed trunk VLAN.

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.

From theWTP profile:

set handoff-rssi 30

set handoff-sta-thresh 30

config radio-1

set band 802.11n-2G

set vaps "Student01"

config radio-2

set band 802.11ac-5G

set darrp enable

set arrp-profile "arrp-default"

set vaps "Student01"

Key points:

Same SSID (Student01)is broadcast onboth APsand onboth bands(2.4 and 5 GHz).

handoff-sta-thresh 30 enablesclient load-balancingbetween APs:

When an AP radio hasmore than 30 associated clients, it starts rejecting new associations so that clients connect to a neighboring AP instead (as long as RSSI is still acceptable).

Current client counts:

AP1:32 clients on 5 GHz, 22 on 2.4 GHz

AP2:12 clients on 5 GHz, 20 on 2.4 GHz

So on 5 GHz:

AP1’s 5-GHz radioexceedsthe 30-client threshold (32 > 30) → it will try topush new clients away.

AP2’s 5-GHz radio iswell belowthe threshold (12 clients) and will happily accept new clients.

The new dual-band client is seen at:

–33 dBmby AP1

–43 dBmby AP2

Even though AP1 has the stronger signal, its 5-GHz radio is already overloaded according to the configured threshold, so AP1 will refuse association attempts from that client. The client will then associate toAP2’s 5-GHz radio, which:

Hasfewer clients(better airtime per device), and

Still has an acceptable signal (–43 dBm is easily usable on 5 GHz).

That matches optionCexactly.

Other options are incorrect because they ignore the configuredclient-load-balancing thresholdsand assume association based purely on RSSI or prefer 2.4 GHz, which is not what this profile is tuned to do.