Fortinet FCSS_LED_AR-7.6 Dumps

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.

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.

FortiGate and FortiSwitchmust share synchronized timewhen operating in FortiLink mode.

Documented reasons in FortiOS:

Accurate time synchronization is required for logs, authentication events, and fabric correlations.

Why it’s critical:

802.1X EAP and RADIUS timestamp validation

NAC policy enforcement timestamps

Certificate validation

Log correlation in Security Fabric / FortiAnalyzer

Incorrect options:

A: Firmware synchronization does NOT require NTP.

B: Switch-to-switch communication does not depend on NTP.

D: Standalone mode is unrelated to time sync.