NSE7 Enterprise Firewall and VDOMs Practice Test 2 — 15 Questions

Question 1

An organization has two FortiGate firewalls in an HA active-passive cluster. They notice that after a failover event, some users cannot access external resources. The administrator checks the HA configuration and finds that failover occurred correctly. What is the most likely cause of the connectivity issue?

Accepted Answer

VDOM links are not synchronized. In an HA active-passive cluster, VDOM links are not automatically synchronized between peers. After a failover, the new primary FortiGate may lack the VDOM link configurations required to route traffic between VDOMs, causing connectivity loss for users relying on inter-VDOM routing. This is a common misconfiguration because VDOM links are treated as local objects and must be explicitly replicated or re-created on the peer.

Answer

session-pickup is disabled

Answer

HA override is enabled

Answer

Gratuitous ARP is disabled

Question 2

A FortiGate administrator is designing a VDOM configuration for a multi-tenant environment. Each tenant requires its own routing table and firewall policies. Which VDOM type should be used for each tenant?

Accepted Answer

NAT mode VDOM. In a multi-tenant VDOM environment where each tenant requires its own routing table and firewall policies, NAT mode VDOM (option D) is the correct choice because it operates as a Layer 3 routing entity with its own independent routing table, interfaces, and firewall policies. This mode allows each tenant VDOM to perform NAT, route between subnets, and enforce security policies autonomously, which is essential for tenant isolation and policy control.

Answer

TP mode VDOM

Answer

Router mode VDOM

Answer

Transparent mode VDOM

Question 3

During a failover test in an HA cluster, the administrator observes that the secondary unit becomes primary but does not have the latest configuration. What is the most likely cause?

Accepted Answer

Config sync is not enabled. Config sync is the mechanism that replicates configuration changes from the primary unit to the secondary unit in a FortiGate HA cluster. If config sync is not enabled, the secondary unit will not receive configuration updates, so when it becomes primary after a failover, it will operate with an outdated or default configuration. This directly explains why the secondary unit lacks the latest configuration after the failover.

Answer

The password encryption is mismatched

Answer

The HA priority is set too low

Answer

session-pickup is disabled

Question 4

An administrator has configured two VDOMs on a FortiGate. One VDOM is in NAT mode and the other in transparent mode. The administrator wants traffic from the transparent mode VDOM to be routed through the NAT mode VDOM. What must be configured to allow inter-VDOM routing?

Accepted Answer

Create an inter-VDOM link. Inter-VDOM routing between VDOMs in different modes (NAT and transparent) requires a dedicated inter-VDOM link (IVL), which is a virtual internal connection that allows traffic to pass between VDOMs without consuming physical ports. The IVL creates a pair of virtual interfaces, one in each VDOM, and firewall policies must be configured to permit traffic across them. This is the only method that supports routing between VDOMs of different modes on the same FortiGate.

Answer

Use a physical interface to connect the VDOMs

Answer

Enable NPU offloading

Answer

Configure firewall policies between the VDOMs

Question 5

An HA cluster is configured with two FortiGates in active-passive mode. The administrator wants to ensure that the secondary unit automatically takes over if the primary unit fails. Which TWO settings must be configured?

Accepted Answer

Set ha-mode to active-passive. Option A is correct because setting ha-mode to active-passive configures the HA cluster so that only the primary unit actively processes traffic while the secondary remains in standby, ready to take over upon failure. This mode is essential for the automatic failover behavior described in the question, as it defines the operational roles of the cluster members.

Answer

Set ha-priority to 100 on primary

Answer

Set ha-mode to active-active

Answer

Enable session-pickup

Question 6

A FortiGate with multiple VDOMs is experiencing high CPU usage. The administrator suspects that one VDOM is consuming excessive resources. Which THREE methods can be used to limit resource usage per VDOM?

Accepted Answer

Apply per-VDOM traffic shaping policies. Option A is correct because per-VDOM traffic shaping policies allow the administrator to apply bandwidth limits and QoS policies specifically to traffic within a particular VDOM, preventing that VDOM from monopolizing the FortiGate's CPU resources. This is achieved by configuring shaping policies under the VDOM's firewall policy that match traffic and apply a traffic shaper, which can limit bandwidth and prioritize traffic, thereby reducing CPU load from that VDOM.

Answer

Enable HA resource reservation

Answer

Enable VDOM logging

Question 7

An administrator is reviewing the HA configuration shown in the exhibit. The primary unit has failed, and the secondary unit (with priority 100) has taken over. However, the administrator notices that the secondary unit has an IP address of 10.10.10.2 on port3, but cannot ping the management gateway 10.10.10.1. What is the most likely cause?

Accepted Answer

The HA management interface IP is not active on the secondary. When the secondary unit takes over in an HA cluster, the HA management interface IP (configured under config system ha) is only active on the primary unit by default. Even after failover, the secondary unit does not automatically activate this IP unless the 'management-interface-ip' is explicitly configured to be active on the secondary. Since the secondary unit has IP 10.10.10.2 on port3 but cannot ping the management gateway 10.10.10.1, the most likely cause is that the HA management interface IP is not active on the secondary, meaning the secondary unit is using its own port3 IP (10.10.10.2) but the gateway expects the management IP to be reachable from that subnet, which it is not.

Answer

The hbdev configuration is incorrect

Answer

The override setting is preventing the secondary from taking over management

Answer

session-pickup is not enabled

Question 8

An administrator configures two VDOMs as shown in the exhibit. They create an inter-VDOM link between VDOM1 and VDOM2. They then add a firewall policy in VDOM1 allowing traffic from port1 to the inter-VDOM link, and a policy in VDOM2 allowing traffic from the inter-VDOM link to port2. However, traffic from 192.168.1.10 to 10.10.10.50 fails. What is the most likely cause?

Accepted Answer

Missing route in VDOM1 for the 10.10.10.0/24 network. Option C is correct because inter-VDOM link traffic requires routing in both VDOMs. Even with correct firewall policies, VDOM1 must have a route to the destination network (10.10.10.0/24) pointing to the inter-VDOM link interface. Without this route, VDOM1 drops the packet before it can be forwarded across the link, causing the failure.

Answer

Firewall policies are not correctly configured

Answer

The inter-VDOM link is not configured

Answer

The allowaccess setting on port2 does not include ping

Question 9

An administrator configures two FortiGate units in an active-passive HA cluster. During a failover test, the administrator notices that the secondary unit becomes primary but the session table is empty, causing all existing connections to drop. Which configuration change should be made to preserve session information during failover?

Accepted Answer

Enable session pickup and configure HA session synchronization. Option D is correct because session pickup and HA session synchronization are specifically designed to replicate the session table from the primary FortiGate to the secondary unit in an active-passive cluster. Without this feature, the secondary unit becomes primary but has no knowledge of existing sessions, causing all active connections to drop. Enabling session synchronization ensures that session state information is continuously mirrored to the standby unit, allowing seamless failover without disrupting established flows.

Answer

Enable FGCP configuration synchronization

Answer

Configure dead gateway detection on the FortiGate units

Answer

Enable link-failover on the monitored interfaces

Question 10

A network engineer is designing a FortiGate HA cluster with two units operating in active-active mode. The cluster will be placed in a VDOM-enabled environment. The engineer wants to ensure that traffic from a specific VDOM is load-balanced across both units based on source IP address. Which setting must be configured on the cluster to achieve this?

Accepted Answer

Configure a virtual cluster with load-balance method source IP. In a VDOM-enabled active-active HA cluster, per-VDOM load balancing is achieved by configuring a virtual cluster and setting the load-balance method to source IP. This allows the cluster to distribute traffic for that specific VDOM across both units based on the source IP hash, ensuring session persistence while balancing the load.

Answer

Configure randomize-vip under config system ha

Answer

Configure vdom-load-balance under config system ha

Answer

Enable session pickup and set session-pickup-delay to 0

Question 11

An administrator is configuring a FortiGate HA cluster and wants to ensure that the cluster can tolerate a failure of one unit without administrative intervention. The cluster must also support upgrading firmware with minimal downtime. Which HA mode should the administrator select?

Accepted Answer

Active-passive HA. Active-passive HA (option C) is correct because it provides automatic failover without administrative intervention when a unit fails, and it supports hitless firmware upgrades by upgrading the standby unit first, then performing a failover to make it active, followed by upgrading the original active unit. This mode uses a single management IP and synchronizes configuration and session state between the primary and backup units, ensuring minimal downtime during both failure and upgrade scenarios.

Answer

Standalone mode

Answer

Active-active HA

Answer

FGCP mode

Question 12

A FortiGate HA cluster is configured with two units in active-passive mode. The administrator needs to perform a firmware upgrade on the cluster with minimal downtime. The current firmware version is 7.2.5 and the target is 7.2.7. The cluster uses FGCP with session synchronization enabled. Which procedure should the administrator follow?

Accepted Answer

Upgrade the passive unit first, perform a graceful failover, then upgrade the new passive unit. Option D is correct because it follows the recommended upgrade procedure for an active-passive FGCP cluster with session synchronization. By upgrading the passive unit first, then performing a graceful failover (which preserves existing sessions via FGCP session sync), and finally upgrading the new passive unit, the administrator ensures that the cluster remains operational throughout the process with minimal traffic disruption. This method avoids a full cluster outage and maintains session continuity.

Answer

Upgrade only the primary unit and let the secondary synchronize automatically

Answer

Disable HA, upgrade both units, then re-enable HA

Answer

Upgrade both units at the same time by connecting to each via console

Question 13

An administrator has configured a FortiGate HA cluster with two units. The cluster uses a virtual cluster for load balancing in active-active mode. The administrator notices that traffic from one VDOM is not being load-balanced and is only handled by one unit. What is the most likely cause?

Accepted Answer

The VDOM is not assigned to any virtual cluster. In an active-active HA cluster with virtual clusters, each VDOM must be explicitly assigned to a virtual cluster to participate in load balancing. If a VDOM is not assigned to any virtual cluster, it defaults to being handled only by the primary unit, regardless of the cluster mode. This explains why traffic from that VDOM is not load-balanced.

Answer

Session pickup is disabled

Answer

The HA priority is set to 0 on the secondary unit

Answer

The management interface is not configured on the VDOM

Question 14

An administrator is troubleshooting an HA cluster issue. The cluster consists of two FortiGate units in active-passive mode. The passive unit is showing a 'heartbeat lost' error in the logs. Which TWO configuration checks should the administrator perform to resolve this issue?

Accepted Answer

Ensure the heartbeat interface is physically connected and has a valid IP address in the same subnet. Option B is correct because the heartbeat interface must be physically connected and have a valid IP address on the same subnet for the two FortiGates to exchange HA heartbeat packets (typically UDP port 703). If the interface is down or the IPs are not in the same subnet, the passive unit will log 'heartbeat lost' and fail to maintain cluster synchronization.

Answer

Check that the HA password is the same on both units

Answer

Verify that HA override is enabled on both units

Answer

Confirm that the management interface IP addresses are on the same subnet

Question 15

A FortiGate HA cluster is configured in active-passive mode with VDOMs. The administrator wants to ensure that a specific VDOM (VDOM1) always runs on the primary unit unless that unit fails. Additionally, the administrator wants to minimize disruption during a failover. Which THREE configuration steps should be taken?

Accepted Answer

Set the HA priority of the primary unit to a higher value (e.g., 200) than the secondary unit. Option A is correct because in an active-passive HA cluster, setting a higher HA priority (e.g., 200) on the primary unit ensures it is elected as the active unit. This guarantees that VDOM1, which is not load-balanced, will run on the primary unit under normal conditions, as the higher priority value makes the primary unit preferred during the election process.

Answer

Disable session pickup to speed up failover

Answer

Enable active-active HA mode