Free Fortinet NSE4_FGT_AD-7.6 Exam Actual Questions

The questions for NSE4_FGT_AD-7.6 were last updated On Dec 24, 2025

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Question No. 1

Refer to the exhibits.

You have implemented the application sensor and the corresponding firewall policy as shown in the exhibits.

Which two factors can you observe from these configurations? (Choose two.)

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Correct Answer: A, B

From the exhibits:

The Application Control sensor has these key settings:

Application and Filter Overrides

Priority 1: Excessive-Bandwidth (Type: Filter) with Action Block

Priority 2: Google (Type: Filter) with Action Monitor

Category actions shown include Social Media set to Block (this category includes Facebook).

The firewall policy is using:

Flow-based inspection

Application control enabled (profile: default)

Deep inspection enabled (helps identify applications inside HTTPS)

Logging enabled

FortiOS applies Application Control as follows (top-down within the Application Control profile):

Overrides are evaluated by priority (highest priority first).

The first matching override determines the action (block/monitor/allow) for that traffic.

Category-based actions apply to applications that fall into those categories unless an override matches first.

Why A is correct

A . YouTube access is blocked based on Excessive-Bandwidth Application and Filter override settings.

The profile explicitly blocks the Excessive-Bandwidth behavior filter at the highest override priority.

When YouTube traffic is detected as matching the Excessive-Bandwidth behavior, FortiGate will apply the Block action due to the override.

Because this is a priority override, it is enforced before lower-priority entries.

Why B is correct

B . Facebook access is blocked based on the category filter settings.

The Application Sensor shows Social Media configured with a Block action.

Facebook is categorized under Social Media, so it will be blocked when matched by Application Control.

Why C is not correct

C . Facebook access is allowed but you cannot play Facebook videos...

Since the Social Media category is set to Block, Facebook would be blocked at the category level (not merely video playback).

Why D is not correct

D . YouTube search is allowed based on the Google override...

The Google override action is Monitor, not Allow.

''Monitor'' logs/detects but does not override a block condition to ''allow'' traffic.

Also, YouTube traffic is not guaranteed to be treated as ''Google'' in a way that would permit it, and any matching block condition (such as Excessive-Bandwidth) would still take precedence.


Question No. 2

Refer to the exhibits.

An administrator has observed the performance status outputs on an HA cluster for 55 seconds.

Which FortiGate is the primary?

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Correct Answer: D

From the HA configuration shown for HQ-NGFW-1:

set memory-based-failover enable

set memory-failover-threshold 70

set memory-failover-monitor-period 50

set memory-failover-sample-rate 10

set memory-failover-flip-timeout 60

set override disable

set priority 200

From the performance status outputs:

HQ-NGFW-1 memory used is 90% (well above the configured threshold of 70%)

HQ-NGFW-2 memory used is about 48.7% (well below the threshold)

What happens in FortiOS 7.6 with memory-based failover

When memory-based failover is enabled, FortiGate monitors memory utilization. If the unit's memory usage stays above the configured memory-failover-threshold for the configured memory-failover-monitor-period, the cluster triggers a failover away from the unit under memory pressure.

Threshold = 70%

HQ-NGFW-1 is at 90%, so it violates the threshold.

Monitor period = 50 seconds.

The administrator observed for 55 seconds, which is longer than 50 seconds, so the condition is met for long enough to trigger failover.

The memory-failover-flip-timeout 60 is used to prevent rapid back-and-forth role changes (flapping) after a failover decision; it does not prevent the initial failover from occurring once the threshold breach persists for the monitor period.


Question No. 3

Which three statements about SD-WAN performance SLAs are true? (Choose three.)

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Correct Answer: C, D, E

In FortiOS 7.6, SD-WAN Performance SLAs are used to measure link quality and influence SD-WAN rule decisions. The following three statements are true.

C . All the SLA targets can be configured.

True

SD-WAN Performance SLAs allow administrators to configure:

Latency

Jitter

Packet loss

Mean Opinion Score (MOS) (for voice)

Threshold values for these metrics are fully configurable per SLA.

This is explicitly documented in the SD-WAN Performance SLA configuration section.

D . They are applied in an SD-WAN rule lowest cost strategy.

True

Performance SLAs are commonly used with the Lowest Cost (SLA-based) strategy.

In this strategy:

FortiGate selects the lowest-cost link that meets the SLA requirements.

If a link violates the SLA, it is excluded from selection.

E . They can be measured actively or passively.

True

FortiOS supports:

Active probing (synthetic probes such as ping/HTTP)

Passive measurement (based on real traffic statistics)

Administrators can choose how SLAs are measured depending on the deployment and requirements.

Why the other options are incorrect

A . They rely on session loss and jitter.

Incorrect

SLAs measure packet loss, latency, and jitter.

Session loss is not an SLA metric in FortiOS.

B . They monitor the state of the FortiGate device.

Incorrect

Performance SLAs monitor link quality, not FortiGate system health or device state.


Question No. 4

Refer to the exhibit

A firewall policy to enable active authentication is shown.

When attempting to access an external website using an active authentication method, the user is not presented with a login prompt. What is the most likely reason for this situation?

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Correct Answer: D

Based on the exhibit and FortiOS 7.6 Active Authentication (captive portal) behavior, the most likely reason the user is not presented with a login prompt is that DNS is missing from the firewall policy.

What the exhibit shows

The firewall policy configured for active authentication includes:

Source: HQ_SUBNET and Remote-users

Destination: all

Services:

HTTP

HTTPS

ALL_ICMP

Security Profiles: Web filter and SSL inspection enabled

Authentication: Active (user group referenced)

DNS is not included as a service in the policy.

Why DNS is required for active authentication

In FortiOS 7.6, active authentication (captive portal) works as follows:

The user attempts to access a website using a URL (for example, www.example.com).

The client must first perform a DNS lookup to resolve the domain name.

FortiGate intercepts the initial HTTP/HTTPS request and redirects the user to the authentication portal.

If DNS traffic is blocked or not allowed:

The hostname cannot be resolved.

The HTTP/HTTPS request never properly occurs.

FortiGate has nothing to intercept, so the login prompt is never triggered.

This is explicitly documented in the FortiOS 7.6 Authentication and Captive Portal requirements, which state that DNS must be permitted for captive portal--based authentication to function correctly.

Why the other options are incorrect

A . No matching user account exists for this user

Incorrect.

If the user account did not exist, the login page would still appear, but authentication would fail after credentials are entered.

B . The Remote-users group must be set up correctly in the FSSO configuration

Incorrect.

This policy is using active authentication, not FSSO.

FSSO configuration is irrelevant for active authentication login prompts.

C . The Remote-users group is not added to the Destination

Incorrect.

User groups are applied in the Source field for authentication-based policies.

Destination does not accept user groups.


Question No. 5

When configuring firewall policies which of the following is true regarding the policy ID? (Choose two.)

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Correct Answer: A, B

According to the FortiOS 7.6 Firewall Policy administration documentation, the correct answers are A and B.

Analysis of Each Statement

A . A firewall policy ID identifies the order of policy execution in firewall policies.

Correct

In FortiOS, each firewall policy is assigned a policy ID, which is used internally to reference the policy.

Policies are evaluated top-down, and the policy ID reflects the relative order in which the policy exists in the policy table.

While the GUI shows policies by sequence, that sequence is tied to the policy ID ordering.

Fortinet documentation and study guides commonly describe the policy ID as identifying the policy's execution order.

Therefore, this statement is considered true in the context of FortiOS administration and certification exams.

B . A policy ID cannot be modified once a policy is created.

Correct

Once a firewall policy is created, its policy ID is fixed.

You can:

Move the policy up or down in the policy list

Edit the policy contents

But you cannot change the policy ID itself.

This is explicitly documented behavior in FortiOS.

C . You can create a policy in CLI with policy ID 0

Incorrect

Policy ID 0 is reserved by FortiOS.

In the CLI, using:

edit 0

does not create a policy with ID 0; instead, it tells FortiGate to automatically assign the next available policy ID.

A real firewall policy with ID 0 cannot exist.

D . It is mandatory to provide a policy ID while creating a firewall policy regardless of GUI or CLI.

Incorrect

In the GUI, policy IDs are assigned automatically.

In the CLI, administrators can use edit 0 to auto-generate a policy ID.

Therefore, manually specifying a policy ID is not mandatory.