Fortinet FCSS_LED_AR-7.6 Online Practice Questions and Exam Preparation

Fortinet FCSS_LED_AR-7.6 Online Questions & Answers

• Question 1:

  You are deploying a FortiSwitch device managed by FortiGate in a secure network environment. To ensure accurate communication, you must identify which protocols are required for communication and control between FortiGate and FortiSwitch. Which three protocols are used by FortiGate to manage and control FortiSwitch devices? (Choose three.)

  A. SNMP can be used by FortiGate to manage FortiSwitch devices by monitoring their status.
  B. UHTTPS is usea;by FortiGate to securely manage and configure FortiSwitch devices.
  C. FortiGate uses the Fortilink protocol to establish communication with FortiSwitch.
  D. CAPWAP is used to establish the control channel between FortiSwitch and FortiGate.
  E. IGMP is required for managing communication between FortiGate and FortiSwitch devices in multicast environments.
  B. UHTTPS is usea;by FortiGate to securely manage and configure FortiSwitch devices.
  C. FortiGate uses the Fortilink protocol to establish communication with FortiSwitch.
  D. CAPWAP is used to establish the control channel between FortiSwitch and FortiGate.

  ---

  explanation:

  Let's verify each protocol:

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

  FortiLink is the management and control protocol , encapsulated over:

  LLDPfor discovery

  CAPWAP (UDP/5246?247)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, FortiSwitch also uses CAPWAP internally when managed by FortiGate.

  This is documented in:

  FortiSwitch Administration Guide

  LAN Edge deployment guide

  So D 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

  Therefore UHTTPS is indeed one of the key protocols .

  Why the incorrect options are wrong:

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

  FortiGate does not use 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.

• Question 2:

  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.)

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

  ---

  explanation:

  The problem states:

  FortiGate receives RADIUS accounting messages on port3 .

  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 on the value inside the RADIUS attribute (usually Class).

  For group assignment to work, FortiGate must compare:

  RSSO User Group # RADIUS Class Attribute Value

  This is exactly how FortiGate maps RSSO users to groups .

  #D. RSSO agent's sso-attribute must be set to Class

  The sso-attribute defines which 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 identifies which RADIUS attribute carries the actual username .

  In this scenario:

  RADIUS accounting messages contain the username in User-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.

• Question 3:

  You are configuring FortiAuthenticator to integrate with FSSO for user identification. To enable FortiAuthenticator to extract user information from syslog messages and inject it into FSSO, you have configured syslog matching rules. What is the role of syslog matching rules in the process of injecting user information into FSSO?

  A. To automatically update user group memberships in FSSO based on syslog events
  B. To enforce user authentication policies based on syslog message contents
  C. To define how syslog messages are parsed and extract user information, such as usernames and IP addresses
  D. To filter and block irrelevant syslog messages from being processed by the FortiAuthenticator
  C. To define how syslog messages are parsed and extract user information, such as usernames and IP addresses

  ---

  explanation:

  When FortiAuthenticator is used as an FSSO agent based on syslog , it must:

  Parse incoming syslog messagesfrom devices (firewalls, WLAN controllers, VPN concentrators, etc.).

  Extract identity fieldssuch as:

  Username

  IP address

  Login/logout event indicators

  Syslog matching rules on FortiAuthenticator define:

  Which syslog messages are relevant (by facility, message pattern, or regex).

  How to capture specific fields (username, IP, group, event type).

  FortiAuthenticator then uses this parsed data to inject logon sessions into FSSO , so FortiGate can apply identity-based policies.

  Thus, the role of syslog matching rules is exactly as described in C

  A: Group mapping is handled separately via directory groups / FSSO config, not directly by matching rules.

  B: Enforcement of authentication policies is done on FortiGate, not directly by the matching rules.

  D: While irrelevant logs can be ignored via rules, the primary purpose is parsing and extraction , not generic filtering.

• Question 4:

  What is the expected behavior when enabling auto TX power control on a FortiAP interface?

  A. FortiGate monitors the signal strength of nearby AP interfaces and adjusts its own transmit power every 30 seconds to match the signal strength of the adjacent AP
  B. FortiGate measures the signal strength of nearby FortiAP interfaces every 30 seconds and adjusts their transmit power to ensure they remain detectable at -70 dBm.
  C. FortiGate periodically measures the signal strength of the weakest associated client and adjusts the AP radio power to align with the detected signal strength of that client.
  D. The AP periodically evaluates the signal strength of its own transmission from the client perspective and adjusts its power to ensure the signal is detected at -70 dBm.
  C. FortiGate periodically measures the signal strength of the weakest associated client and adjusts the AP radio power to align with the detected signal strength of that client.

  ---

  explanation:

  Auto TX power control on FortiAP is an RF-optimization feature:

  FortiGate (as wireless controller) continuously evaluates RSSI of associated clients on each FortiAP radio.

  The algorithm focuses on the weakest client (the one with the worst signal) and adjusts the AP's transmit power so that this client's signal level stays within a configured / target range.

  This helps balance coverage and limit co-channel interference: APs don't transmit at maximum power when clients are close, but will increase power when the weakest client signal drops too low.

  Therefore the correct behavior description is:

  # AP power is adjusted based on the weakest associated client's signal. C

  Why the others are wrong:

  Aand talk about matching nearby APs' power or forcing everything to 0 dBm, which is not how B FortiAP auto TX works.

  Dincorrectly states the AP "evaluates its own transmission from the client perspective"; the AP can only infer client-side conditions from the client's RSSI at the AP , not the inverse.

• Question 5:

  You are troubleshooting a Syslog-based single sign-on (SSO) issue on FortiAuthenticator, where user authentication is not being correctly mapped from the syslog messages. You need a tool to diagnose the issue and understand the logs to resolve it quickly. Which tool in FortiAuthenticator can you use to troubleshoot and diagnose a Syslog SSO issue?

  A. Debug logs > Remote Servers > Syslog Viewer
  B. Parsing Test Tool
  C. Debug logs > SSO Sessions page
  D. Debug logs > Single Sign-On > Syslog SSO
  D. Debug logs > Single Sign-On > Syslog SSO

  ---

  explanation:

  Context: You're troubleshooting Syslog-based SSO on FortiAuthenticator :

  Devices (typically firewalls, WLAN controllers, VPN gateways) send syslog messages containing usernames, IPs, login/logout events.

  FortiAuthenticator parses those logs using Syslog SSO rules and injects logon sessions into FSSO for FortiGate.

  When users are not mapping correctly, you need to see:

  Did the syslog message arrive?

  Which matching rule (if any) caught it?

  What username and IP were extracted?

  Why was a message ignored or rejected?

  FortiAuthenticator has a dedicated debug area for this:

  Debug logs # Single Sign-On # Syslog SSO

  This view shows:

  Raw syslog lines received

  The matching rule applied (or "no match")

  Parsed fields (username, IP, group)

  Any parsing errors

  This is exactly the tool designed to troubleshoot and diagnose Syslog SSO issues .

  Why the other options are not the best for this issue

  A. Debug logs > Remote Servers > Syslog Viewer

  Lets you see syslog traffic in general, but does not show how SSO rules are applied or why they fail. Good for connectivity checks, not SSO logic.

  B. Parsing Test Tool

  Useful to test patterns and rules manually by pasting sample log lines, but it doesn't show live traffic or running SSO sessions.

  C. Debug logs > SSO Sessions page

  Shows existing SSO sessions (who is logged in), but not why a particular syslog message did not create a session.

• Question 6:

  Refer to the exhibits.

  

  

  Which include debug output and SSL VPN configuration details.

  An SSL VPN has been configured on FortiGate. To enhance security, the administrator enabled Required Client Certificate in the SSL VPN settings. However, when a user attempts to connect, authentication fails.

  Which configuration change is needed to fix the issue and allow the user to connect?

  A. Enable Redirect HTTP to SSL-VPN on the SSL VPN configuration page.
  B. Import the CA that signed the SSL VPN Server Certificate to FortiGate.
  C. Set the user certificate as the Server Certificate on the SSL VPN configuration page.
  D. Import the CA that signed the user certificate to FortiGate.
  D. Import the CA that signed the user certificate to FortiGate.

  ---

  explanation:

  The SSL-VPN configuration has Require Client Certificate enabled. When this is enabled, FortiOS performs two checks:

  Normal user authentication(username/password or PKI user)

  Additional client certificate check?the client certificatemust be signed by a CA that FortiGate trusts

  FortiOS documentation for "SSL VPN with certificate authentication" states:

  "The client certificate only needs to be signed by a known CA in order to pass authentication."

  "The CA certificate is the certificate that signed both the server certificate and the user certificate... The CA certificate is available to be imported on the FortiGate."

  The debug output shows key lines:

  __quick_check_peer-CA does not match.

  Issuer of cert depth 0 is not detected in CMDB.

  This tells us:

  FortiGate does see the user's certificate ,

  But cannot find the issuing CA in its local CA certificate store ("CMDB" = configuration database).

  This means the CA that signed the user certificate has not been imported into FortiGate.

  Now evaluate the options:

  A. Enable Redirect HTTP to SSL-VPN?affects only redirection from HTTP to HTTPS; it has nothing to do with certificate validation.

  B. Import the CA that signed the SSL VPN Server Certificate?the server certificate is already working (the portal comes up) and its CA is not what the debug complains about; the error is about the peer (user) certificate. Often the same CA signs both, but the failing check specifically says the issuer of the client cert is not in CMDB.

  C. Set the user certificate as the Server Certificate?incorrect; server and client certificates serve different roles.

  D. Import the CA that signed the user certificate to FortiGate?this directly addresses the debug error and aligns with the documented requirement that the CA which issued the user certificate must be

• Question 7:

  Refer to the exhibit.

  

  On FortiGate, a RADIUS server is configured to forward authentication requests to FortiAuthenticator, which acts as a RADIUS proxy. FortiAuthenticator then relays these authentication requests to a remote Windows AD server using LDAP.

  While testing authentication using the CLI command diagnose test authserver. the administrator observed that authentication succeeded with PAP but failed when using MS-CHAFV2. Which two solutions can the administrator implement to enable MS-CHAPv2 authentication? (Choose two.)

  A. Change the FortiGate authentication method to CHAP instead of MS-CHAPv2.
  B. Enable Windows Active Directory domain authentication on FortiAuthenticator.
  C. Enable RADIUS attribute filtering on FortiAuthenticator.
  D. Configure FortiAuthenticator to use RADIUS instead of LDAP as the back-end authentication server
  A. Change the FortiGate authentication method to CHAP instead of MS-CHAPv2.
  D. Configure FortiAuthenticator to use RADIUS instead of LDAP as the back-end authentication server

  ---

  explanation:

• Question 8:

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

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

  ---

  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 and 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 to automate access control.

  D. Manually place devices in VLANs

  NAC eliminates manual VLAN assignment -- it is dynamic.

• Question 9:

  A FortiSwitch is not appearing in the FortiGate management interface after being connected via FortiLink. What could be a first troubleshooting step?

  A. Ensure that the FortiGate security policies allow traffic from the FortiSwitch.
  B. Manually assign a static IP to the FortiSwitch.
  C. Verify that FortiGate device DHCP server is assigning an IP to the FortiSwitch.
  D. Ensure the FortiSwitch has internet access.
  C. Verify that FortiGate device DHCP server is assigning an IP to the FortiSwitch.

  ---

  explanation:

  In FortiLink topologies, a managed FortiSwitch normally gets its management IP automatically from the DHCP server on the FortiLink interface . If the switch does not receive an IP:

  It cannot form the FortiLink CAPWAP/DTLS control channel.

  Therefore it does not appear under WiFi and Switch Controller > FortiSwitch .

  FortiOS documentation states that FortiLink uses a built-in DHCP server on the FortiLink interface for onboarding switches.

  So the first troubleshooting step is to confirm:

  The FortiLink DHCP server is enabled.

  Leases are being handed out to the FortiSwitch MAC.

  Other options:

  A: Security policies do not affect the L2 FortiLink control channel.

  B: Static IP may be used but is not the normal first step.

  D: Internet access is not required for FortiGate to see the switch.

• Question 10:

  Which VLAN is used by FortiGate to place devices that fail to match any configured NAC policies? CRSPAN

  A. NAC
  B. segment
  C. Quarantine
  D. Onboarding
  D. Onboarding

  ---

  explanation:

  In FortiLink NAC for LAN Edge:

  When a device first connects, it is placed into the onboarding VLAN .

  NAC policies then classify the device (by MAC, OS, user, EMS tag, etc.).

  If a NAC policy matches, the device may be moved to an access VLAN quarantine VLAN or .

  If no NAC policy matches , the device simply stays in the onboarding VLAN . FortiOS / LAN Edge documentation describes the onboarding VLAN as thedefault VLAN for unknown or unclassified devices , until NAC policy evaluation moves them elsewhere.