Free NSE4_FGT_AD-7.6 Exam Braindumps
Fortinet NSE 4 - FortiOS 7.6 Administrator Questions 17–24 (page: 4)

Updated On: 15-Jul-2026

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

  1. A firewall policy ID identifies the order of policy execution in firewall policies.
  2. A policy ID cannot be modified once a policy is created.
  3. You can create a policy in CLI with policy ID 0
  4. It is mandatory to provide a policy ID while creating a firewall policy regardless of GUI or CLI.

Answer(s): B,C

Explanation:

According to the FortiOS 7.6 Administration Guide, the firewall policy ID is a unique numerical identifier assigned to each policy for internal database tracking and management purposes. It is important to distinguish the policy ID from the policy sequence.
While the FortiGate processes traffic based on a top-down approach (the sequence), the policy ID itself does not determine the order of execution (Statement A is incorrect).
In FortiOS, once a policy is committed to the configuration, the policy ID cannot be modified (Statement B). If an administrator needs to change a policy ID, they must either delete and recreate the policy or use the clone command in the CLI to copy the settings to a new ID.
Furthermore, the CLI provides a specific shortcut for policy creation: you can create a policy with ID 0 (Statement C).
When the command edit 0 is used within the config firewall policy context, the FortiOS kernel automatically assigns the next available integer as the policy I
D. This is a standard practice for efficient configuration via the command line. Statement D is incorrect because, while every policy must have an ID, the GUI automatically generates this value without requiring the user to manually provide or even see it during the initial creation process.



Refer to the exhibits.


The exhibits show a diagram of a FortiGate device connected to the network, as well as the IP pool configuration and firewall policy objects.
The WAN (port2) interface has the IP address
100.65.0.101/24.
The LAN (port4) interface has the IP address
10.0.11.254/24.
Which IP address will be used to source NAT (SNAT) the traffic, if the user on HQ-PC-1 (10.0.11.50) pings the IP address of BR-FGT (100.65.1.111)?

  1. 100.65.0.101
  2. 100.65.0.49
  3. 100.65.0.149
  4. 100.65.0.99

Answer(s): D

Explanation:

From the exhibits, there are three relevant firewall policies from LAN (port4) to WAN (port2), each using a different IP pool for source NAT:
TCP traffic
Service: ALL_TCP
Destination: BR1-FGT
IP Pool: SNAT-Pool →100.65.0.49
PING traffic
Service: PING
Destination: all
IP Pool: SNAT-Remote1 →100.65.0.99
IGMP traffic
Service: IGMP
Destination: all
IP Pool: SNAT-Remote →100.65.0.149
The user on HQ-PC-1 (10.0.11.50) is pinging BR1-FGT (100.65.1.111). In FortiOS, policy matching is based on (among other fields) source, destination, and service, and the first matching policy in top-down order is applied.
Because the traffic is ICMP echo (ping), it matches the policy named PING traffic (service PING, destination all). That policy explicitly uses Use Dynamic IP Pool with SNAT-Remote1, which is configured with external IP 100.65.0.99.
Therefore, the source NAT IP used for this ping is 100.65.0.99.



An administrator manages a FortiGate model that supports NTurbo
How does NTurbo acceleration enhance antivirus performance?

  1. For flow-based inspection. NTurbo establishes a dedicated data path to redirect traffic between the IPS engine and FortiGate ingress and egress interfaces.
  2. For flow-based inspection. NTurbo creates two inspection sessions on the FortiGate device.
  3. For proxy-based inspection. NTurbo offloads traffic to the content processor.
  4. For proxy-based inspection. NTurbo buffers the whole file and then sends it to the antivirus engine.

Answer(s): A

Explanation:

According to the FortiOS 7.6 Administration Guide and Fortinet hardware acceleration (NTurbo) documentation, the correct answer is A.
What NTurbo Is (FortiOS 7.6 – Verified)
NTurbo is a hardware-based acceleration feature available on specific FortiGate models. It is designed to improve antivirus and IPS performance when operating in flow-based inspection mode.
NTurbo works by creating a fast, optimized data path between:
FortiGate ingress interface
IPS/AV engine
FortiGate egress interface
This minimizes CPU involvement and reduces packet traversal overhead.
Why Option A Is Correct
A . For flow-based inspection, NTurbo establishes a dedicated data path to redirect traffic between the IPS engine and FortiGate ingress and egress interfaces.
This is exactly how NTurbo works, as documented:
NTurbo applies to flow-based inspection only
It accelerates IPS and antivirus scanning
It creates a dedicated fast path that bypasses unnecessary processing steps
This significantly improves throughput and lowers latency
This description matches Fortinet’s official explanation of NTurbo.
Why the Other Options Are Incorrect
B . NTurbo creates two inspection sessions
Incorrect. NTurbo does not duplicate sessions; it optimizes the packet path.
C . NTurbo offloads traffic to the content processor (proxy-based)
Incorrect. NTurbo does not apply to proxy-based inspection and does not offload to content processors.
D: NTurbo buffers the whole file and then sends it to the antivirus engine
Incorrect. Buffering entire files is a proxy-based behavior, not NTurbo.



Refer to the exhibit.

As an administrator you have created an IPS profile, but it is not performing as expected.
While testing you got the output as shown in the exhibit What could be the possible reason of the diagnose output shown in the exhibit?

  1. There is a no firewall policy configured with an IPS security profile.
  2. Administrator entered the command diagnose test application ipsmonitor 5.
  3. FortiGate entered into IPS fail open state.
  4. Administrator entered the command diagnose test application ipsmonitor 99.

Answer(s): A

Explanation:

The exhibit shows the output of the following command:
diagnose test application ipsmonitor 1
pid = 2044, engine count = 0 (+1)
0 - pid:2074:2074 cfg:1 master:0 run:1
How to interpret this output (FortiOS 7.6 – IPS internals)
ipsmonitor displays the status of IPS engines running on the FortiGate.
engine count = 0 means:
No IPS scanning engines are currently active
IPS is not processing any traffic
In FortiOS, IPS engines are started on demand.
Critical documented behavior
IPS processes are only spawned when at least one firewall policy is configured with an IPS profile and traffic matches that policy.
If no firewall policy references an IPS profile, the IPS engine:
Does not start
Shows engine count = 0
Appears “not working,” even though the IPS profile exists
This is exactly what the diagnose output indicates.
Why option A is correct
A . There is no firewall policy configured with an IPS security profile.
Creating an IPS profile alone is not sufficient
IPS must be applied to an active firewall policy
Traffic must match that policy for the IPS engine to run
Otherwise, ipsmonitor will show engine count = 0
This matches FortiOS 7.6 IPS operational behavior.
Why the other options are incorrect
B . Administrator entered the command diagnose test application ipsmonitor 5.
Incorrect.
The exhibit clearly shows ipsmonitor 1
Using a different argument would not explain engine count = 0
C . FortiGate entered into IPS fail open state.
Incorrect.
In fail-open, IPS engines may be bypassed, but they still initialize engine count = 0 specifically indicates IPS is not in use at all
D . Administrator entered the command diagnose test application ipsmonitor 99.
Incorrect.
The command argument affects debug level, not engine creation
Again, the exhibit shows ipsmonitor 1



Refer to the exhibit.

Which two ways can you view the log messages shown in the exhibit? (Choose two.)

  1. By right clicking the implicit deny policy
  2. Using the FortiGate CLI command diagnose log test
  3. By filtering by policy universally unique identifier (UUID) and application name in the log entry
  4. In the Forward Traffic section

Answer(s): C,D

Explanation:

The exhibit shows a FortiGate UTM application control log with fields such as:
type="utm"
subtype="app-ctrl"
action="block"
policyid=1
appid=30220
appcat="Video/Audio"
service="HTTP"
apprisk="elevated"
This is a forward traffic security log, generated by Application Control applied to a firewall policy.
Why the correct answers are C and D
C . By filtering by policy universally unique identifier (UUID) and application name in the log entry
Correct.
FortiOS logs can be viewed and filtered in:
Log & Report →Forward Traffic
Administrators can filter logs using fields such as:
Policy ID / Policy UUID
Application name (app)
Application ID (appid)
The log entry clearly includes application-related fields, making filtering by policy and application a valid and documented way to view these logs.
D . In the Forward Traffic section
Correct.
The log is a UTM Application Control log for traffic passing through a firewall policy.
Such logs are displayed under:
Log & Report →Forward Traffic
This is the standard and correct location to view application control, web filter, IPS, and other security profile logs related to user traffic.
Why the other options are incorrect
A . By right clicking the implicit deny policy
Incorrect.
Implicit deny policies do not generate UTM forward traffic logs like the one shown.
Application control logs are generated only by explicit firewall policies with security profiles enabled.
B . Using the FortiGate CLI command diagnose log test
Incorrect.
diagnose log test is used to test log connectivity and log settings, not to view historical log entries.
It does not display traffic or UTM logs.



Refer to the exhibit.

The administrator configured SD-WAN rules and set the FortiGate traffic log page to display SD-WAN-specific columns: SD-WAN Quality and SD-WAN Rule Name
FortiGate allows the traffic according to policy ID 1 placed at the top. This is the policy that allows SD-WAN traffic. Despite these settings, the traffic logs do not show the name of the SD-WAN rule used to steer those traffic flows
What could be the reason?

  1. SD-WAN rule names do not appear immediately. The administrator must refresh the page.
  2. There is no application control profile applied to the firewall policy.
  3. Destinations in the SD-WAN rules are configured for each application, but feature visibility is not enabled.
  4. FortiGate load balanced the traffic according to the implicit SD-WAN rule.

Answer(s): D

Explanation:

In FortiOS 7.6, SD-WAN steering decisions are recorded in traffic logs only when traffic matches an explicit SD-WAN rule (SD-WAN service rule).
When no configured SD-WAN rule matches a session, FortiGate uses the implicit (default) SD-WAN rule/behavior to select a member (often resulting in load-balancing or default selection based on the configured SD-WAN algorithm).
In the exhibit, traffic is permitted by firewall policy ID 1, and the Destination Interface alternates between port1 and port2, but SD-WAN Rule Name remains empty. This is consistent with the sessions being forwarded by the implicit SD-WAN rule, which does not populate a named rule in the log columns.
Why the other options are not correct:
A: SD-WAN rule name logging is not a “delayed display” behavior requiring refresh; it is populated per-session when an explicit rule matches.
B: Application Control is not required for SD-WAN rule name to appear. Rule name logging depends on SD-WAN rule match, not on whether Application Control is enabled.
C: Feature visibility affects GUI display options, but the exhibit already shows the SD-WAN columns enabled; the issue is that no explicit SD-WAN rule is being hit.



Refer to the exhibits.



A diagram of a FortiGate device connected to the network VIP object and firewall policy configurations are shown.
The WAN (port2) interface has the IP address
100.65.0.101/24.
The LAN (port4) interface has the IP address
10.0.11.254/24.
If the host 100.65.1.111 sends a TCP SYN packet on port 443 to 100.65.0.200. what will the source address, destination address, and destination port of the packet be at the time FortiGate forwards the packet to the destination?

  1. 10.0.11.254, 100.65.0.200. and 443, respectively
  2. 10.0.11.254, 10.0.15.50, and 4443. respectively
  3. 100.65.1. 111, 10.0.11.50, and 4443. respectively
  4. 100.65.1.111, 10.0.11.50. and 443. respectively

Answer(s): C

Explanation:

From the exhibits:
A VIP named VIP-WEB-SERVER is configured on WAN (port2) with:
External IP: 100.65.0.200
Mapped (internal) IP: 10.0.11.50
Port forwarding enabled (TCP)
External service port: 443
Map to IPv4 port: 4443
The inbound firewall policy Web_Server_Access is:
From WAN (port2) to LAN (port4)
Destination: VIP-WEB-SERVER
Service: HTTPS
NAT: Disabled (meaning no source NAT is applied)
What happens to the packet
A host 100.65.1.111 sends TCP SYN dst-port 443 to 100.65.0.200.
When FortiGate matches the VIP and forwards traffic to the internal server, FortiGate performs destination NAT (DNAT) based on the VIP:
Source IP is unchanged because policy NAT is disabled:
Source remains 100.65.1.111
Destination IP is translated by the VIP:
Destination becomes 10.0.11.50
Destination port is translated by the VIP port-forward:
Destination port becomes 4443
Therefore, at the time FortiGate forwards the packet to the destination (internal server), it will be:
Source address: 100.65.1.111
Destination address: 10.0.11.50
Destination port: 4443



A network administrator is reviewing firewall policies in both Interface Pair View and By Sequence View. The policies appear in a different order in each view.
Why is the policy order different in these two views?

  1. By Sequence View groups policies based on rule priority, while Interface Pair View always follows the order of traffic logs.
  2. The firewall dynamically reorders policies in Interface Pair View based on recent traffic patterns, but By Sequence View remains static.
  3. Interface Pair View sorts policies based on matching interfaces, while By Sequence View shows the actual processing order of rules.
  4. Policies in Interface Pair View are prioritized by security levels, while By Sequence View strictly follows the administrator's manual ordering.

Answer(s): C

Explanation:

In FortiOS 7.6, firewall policies can be displayed in multiple views to help administrators understand and manage rules more effectively. The difference in ordering between Interface Pair View and By Sequence View is intentional and documented.
Why the policy order is different
Interface Pair View
Groups firewall policies based on the incoming (From) and outgoing (To) interfaces.
Policies are organized under interface pairs such as:
LAN →WAN
WAN →LAN
Within each interface pair, policies may appear reordered compared to the global list.
This view is designed for readability and troubleshooting, not to show execution order.
By Sequence View
Displays firewall policies in their actual evaluation (processing) order.
This is the top-down order FortiGate uses when matching traffic.
It reflects the real rule sequence that determines which policy is hit first.
Why option C is correct
C . Interface Pair View sorts policies based on matching interfaces, while By Sequence View shows the actual processing order of rules.
This statement exactly matches FortiOS behavior as documented in the FortiOS 7.6 Firewall Policy Views section of the Administrator Guide.
Why the other options are incorrect
A: Interface Pair View does not follow traffic logs, and By Sequence View is not based on “rule priority” grouping.
B: FortiGate does not dynamically reorder policies based on traffic patterns.
D: Security levels do not affect policy ordering in Interface Pair View.



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