Fortinet FCN FortiNAC Administrator Exam Voucher practice questions

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No. These are original practice questions written to match the published exam objectives and difficulty. They are not real exam questions — sharing or reproducing live exam content breaches every certification body's candidate agreement and can void your certification.

Q: How should I use this practice test?

Use it as a readiness check rather than a study tool. Work through the questions without notes, read the explanation for every answer including the ones you got right, and treat any domain where you miss more than a third as the area to revise before booking your exam.

Question 1

Which FortiNAC component is responsible for storing configuration data, host records, and event logs for the entire deployment?

Accepted Answer

The Control Server hosts the database that holds configuration, host, user, and event data, while the Application Server provides the administrative UI and portal services.

Question 2

In a FortiNAC deployment, what is the primary purpose of an isolation VLAN?

Accepted Answer

Isolation VLANs (registration, remediation, quarantine, dead-end) restrict host access to only the services needed to become compliant, such as DNS, DHCP, and the captive portal.

Question 3

An administrator deploys FortiNAC in Layer 2 control mode with a High Availability pair. Which statement accurately describes how the secondary server behaves during normal operation?

Accepted Answer

FortiNAC HA is an active/passive design in which the primary replicates its database to the standby secondary, which assumes the shared virtual IP and services only when failover occurs.

Question 4

Which protocol does FortiNAC most commonly use to read the forwarding table and port status of a managed access switch?

Accepted Answer

FortiNAC polls the bridge forwarding table, VLAN assignments, and interface states over SNMP, and uses CLI over SSH/Telnet mainly to push configuration changes.

Question 5

A switch is modeled in FortiNAC, but link-state and MAC address changes are only detected during the scheduled poll every 10 minutes. Which configuration change provides near-real-time detection?

Accepted Answer

SNMP traps such as link up/down and MAC notification let the switch push events to FortiNAC immediately, rather than waiting for the next scheduled L2 poll.

Question 6

FortiNAC shows a host connected to an access switch port, but the host's IP address field remains empty even though the endpoint has valid connectivity. Which is the most likely cause?

Accepted Answer

FortiNAC learns MAC-to-IP mappings by reading the ARP cache of modeled Layer 3 devices, so an unmodeled or unreachable router leaves the IP field blank even when L2 visibility works.

Question 7

What is the primary function of Device Profiling rules in FortiNAC?

Accepted Answer

Device Profiling rules evaluate collected attributes such as DHCP fingerprint, vendor OUI, and open ports to classify rogue endpoints as known device types and optionally register them.

Question 8

Which statement best describes the difference between the FortiNAC Persistent Agent and the Dissolvable Agent?

Accepted Answer

The Persistent Agent remains installed to provide continuous communication, scanning, and messaging, whereas the Dissolvable Agent executes a single on-demand scan and then deletes itself.

Question 9

An administrator creates a Device Profiling rule using only a DHCP fingerprint method to classify IP cameras. A security review flags this as spoofable. Which rule design most effectively hardens the classification?

Accepted Answer

Requiring multiple confirmation methods means an attacker must spoof several independent attributes at once, which is far harder than forging a single DHCP fingerprint or MAC OUI.

Question 10

In FortiNAC logical network design, what does a Network Access Policy determine?

Accepted Answer

A Network Access Policy pairs a user/host profile with a Network Access Configuration, which maps a logical network to the VLAN or role provisioned at the connection point.

Question 11

How does FortiNAC evaluate multiple Network Access Policies when a host connects and matches more than one user/host profile?

Accepted Answer

FortiNAC processes policies in rank order and stops at the first match, so policy ranking directly controls which access value a multi-matching host receives.

Question 12

A corporate laptop authenticates successfully via 802.1X to FortiNAC acting as a RADIUS proxy, but the switch places it in the default VLAN instead of the intended corporate VLAN. RADIUS accounting is arriving and the host is registered. What should the administrator check first?

Accepted Answer

Successful authentication with wrong VLAN placement points to enforcement mapping, so the device model's enforcement setting and the logical-network-to-VLAN mapping are the correct first checks.

Question 13

What happens to a registered host in FortiNAC when it fails an endpoint compliance policy scan?

Accepted Answer

A failed scan sets the host state to at risk, which triggers enforcement into remediation so the user can correct the deficiency and rescan.

Question 14

Which combination correctly describes the building blocks of a FortiNAC endpoint compliance policy?

Accepted Answer

An endpoint compliance policy links a user/host profile that determines who it applies to with an endpoint compliance configuration that specifies the scan and agent settings to use.

Question 15

An administrator configures a scan with a delayed remediation period of 3 days for a failed antivirus requirement. What is the resulting host behavior during that period?

Accepted Answer

Delayed remediation grants a configurable grace period during which the failing host retains access and receives warnings, with isolation applied only after the period elapses without a passing scan.

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