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| Certification Vendor: | Fortinet |
|---|---|
| Exam Name: | Fortinet NSE 4 - FortiOS 7.6 Administrator |
| Exam Number: | NSE4_FGT_AD-7.6 |
| Exam Format: | Applied configuration & troubleshooting, Scenario-based questions, Multiple choice |
| Passing Score: | Pass/Fail (approx. 70% standard) |
| Real Exam Qty: | 50–55 |
| Available Languages: | Japanese, Korean, Spanish, English, Brazilian Portuguese, French |
| Exam Duration: | 90 minutes |
| Exam Price: | $200 USD |
| Related Certifications: | FCP in Cloud Security FCP in SASE FCP in Security Operations FCP in Secure Networking |
| Certificate Validity Period: | 3 years |
| Recommended Training: | FortiOS 7.6 Administrator Self-Paced Course |
| Exam Registration: | Pearson VUE Registration |
| Sample Questions: | Fortinet NSE4_FGT_AD-7.6 Sample Questions |
| Exam Way: | Proctored online or onsite via Pearson VUE |
| Pre Condition: | No formal prerequisites; recommended: basic networking knowledge, hands-on FortiGate experience, FortiGate Operator & Administrator training |
| Official Syllabus URL: | https://training.fortinet.com/local/staticpage/view.php?page=nse4_fgt_ad_7_6 |
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NEW QUESTION # 18
Refer to the exhibit.
Which two statements about the FortiGuard connection are true? (Choose two.)
Answer: A,B
Explanation:
Based on the diagnose debug rating output provided in the exhibit and the standard behavior of the FortiGuard connection mechanism in FortiOS 7.6:
Weight Calculation (Statement A is True):
In FortiOS, the rating server selection process uses a weight-based system.
According to official documentation, the weight increases with failed packets (lost responses) and decreases with successful packets.
This mechanism ensures that servers with poor reliability are penalized by having higher weights, effectively pushing them to the bottom of the preference list.
Default Port Communication (Statement D is True):
The exhibit explicitly shows the communication is using HTTPS on port 8888.
In FortiOS 7.6 (and legacy versions like 6.2/6.4), FortiGuard filtering supports specific protocols and ports:
HTTPS on ports 443, 53, and 8888, where 8888 is considered a default port for FortiGuard queries.
Ports 53 and 8888 are standard for both UDP and TCP/HTTPS FortiGuard communications to avoid common firewall blocks on standard web ports.
Why other options are incorrect:
Statement B (Unreliable protocols): While you can configure UDP (which is unreliable), the exhibit specifically shows HTTPS is being used, which is a reliable (TCP-based) protocol.
Statement C (DNS lookup): In the "Flags" column of the server list, a server found via DNS lookup would be marked with the "D" flag. The exhibit shows the flag as "I" (indicating the last INIT request was sent to this server) and a numeric "2," but the "D" flag is absent. Additionally, the IP 10.0.1.241 is a private address, suggesting it is a manually configured FortiManager or local override server rather than a public server found via global DNS lookup.
NEW QUESTION # 19
You have configured the below commands on a FortiGate.
What would be the impact of this configuration on FortiGate?
Answer: D
NEW QUESTION # 20
Refer to the exhibit.
What can you conclude from the log shown in the exhibit?
Answer: D
Explanation:
"You can configure the fail-open setting under config ips global to control how the IPS engine behaves when the IPS socket buffer is full."
"If the IPS engine does not have enough memory to build more sessions, the fail-open setting determines whether the FortiGate should drop the sessions or bypass the sessions without inspection."
"It is important to understand that the IPS fail-open setting is not just for conserve mode-it kicks in whenever IPS fails. Most failures are due to a high CPU issue or a high memory (conserve mode) issue." Technical Deep Dive:
The correct answer is A.
The log text says:
logdesc="IPS session scan paused"
action="drop"
msg="IPS session scan, enter fail open mode"
That combination indicates an IPS failure condition, specifically the condition described in the guide where the IPS socket buffer is full and the IPS engine lacks enough memory/resources to build additional sessions. In that state, FortiGate applies the configured IPS fail-open behavior. Since the log shows action="drop", the device is not bypassing those new sessions; it is dropping them.
Why the other choices are wrong:
B is wrong because the guide ties fail-open to socket buffer/resource exhaustion, not packet decode failure.
C is wrong because this is not evidence of a manual diagnostic pause.
D is wrong because the study guide does not associate this log with dirty-flag packet reevaluation.
Operationally, this usually points to high memory, high CPU, or conserve-mode pressure affecting the IPS engine. Useful checks are:
get system performance status
diagnose hardware sysinfo conserve
diagnose sys top
Those help confirm whether the IPS issue is being driven by memory pressure or CPU exhaustion.
NEW QUESTION # 21
Refer to the exhibits. The exhibits show the system performance output and default configuration of high memory usage thresholds on a FortiGate device.
Based on the system performance output, what are the two possible outcomes? (Choose two.)
Answer: A,D
Explanation:
FG enters conserve mode at 88% by default, at which point you can't make configuration changes. Also, without additional config, FG will drop sessions that require inspection. At 95%, all new sessions are dropped.
NEW QUESTION # 22
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)?
Answer: 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.
NEW QUESTION # 23
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