FCSS_NST_SE-7.6 Practice Questions, FCSS_NST_SE-7.6 Exam Price

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Fortinet FCSS_NST_SE-7.6 Exam Syllabus Topics:

Topic	Details
Topic 1	Security profiles: This part measures skills of Security Operations Specialists and covers identifying and resolving problems linked to FortiGuard services, web filtering configurations, and intrusion prevention systems to maintain protection across network environments.
Topic 2	System troubleshooting: This section of the exam measures the skills of Network Security Support Engineers and addresses diagnosing and correcting issues within Security Fabric setups, automation stitches, resource utilization, general connectivity, and different operation modes in FortiGate HA clusters. Candidates work with built-in tools to effectively find and resolve faults.
Topic 3	Routing: This section focuses on Network Engineers and involves tackling issues related to packet routing using static routes, as well as OSPF and BGP protocols to support enterprise network traffic flow.
Topic 4	VPN: This section is aimed at IT Professionals and includes diagnosing and addressing issues with IPsec VPNs, specifically IKE version 1 and 2, to secure remote and site-to-site connections within the network infrastructure.
Topic 5	Authentication: This section evaluates the abilities of System Administrators and requires troubleshooting both local and remote authentication methods, including resolving Fortinet Single Sign-On (FSSO) problems for secure network access.

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Fortinet FCSS - Network Security 7.6 Support Engineer Sample Questions (Q122-Q127):

NEW QUESTION # 122
Refer to the exhibit, which shows a session entry.

Which statement about this session is true?

A. It is an ICMP session from 10.1.10.10 to 10.200.1.1.
B. It is an ICMP session from 10.1.10.1 to 10.200.5.1.
C. Return traffic to the initiator is sent lo 10.200.1.254.
D. Return traffic to the initiator is sent to 10.1.0.1.

Answer: C

Explanation:
The session output reveals a session with proto=1 (ICMP) and the origin and reply directions show address and NAT translations. Specifically, the hook=post dir=org act=snat shows that source NAT is performed for outgoing packets, where the source 10.1.10.10:40602 is translated to 10.200.5.1:8 (likely ICMP id 8, not a TCP/UDP port). The reply direction, hook=pre dir=reply act=dnat, indicates destination NAT for incoming packets: packets incoming for 10.200.5.1:60430 are destination-NATed to 10.1.10.10:40602. The gateway (gwy) is listed as 10.200.1.254/10.1.0.1, which for outgoing traffic means that return traffic is directed to the gateway (10.200.1.254), per the NAT policy. This is confirmed by the FortiOS Session Table Guide, which explains that the returned ICMP reply will be routed out to this NAT gateway. The session statistics and logical flow (SNAT out, matching DNAT in) reinforce that reply traffic to the initiator traverses via
10.200.1.254.
References:
FortiOS Administration Guide: Session Table, NAT, and Route Interaction Fortinet Technical Note: Diagnose sys session list, Direction and NAT Analysis

NEW QUESTION # 123
Refer to the exhibit, which shows the output of diagnose sys session list.

If the HA ID for the primary device is 0, what happens if the primary fails and the secondary becomes the primary?

A. The session state is preserved but the kernel will need to re-evaluate the session because NAT was applied.
B. The secondary device has this session synchronized; however, because application control is applied, the session is marked dirty and has to be re-evaluated after failover.
C. The session will be removed from the session table of the secondary device because of the presence of allowed error packets, which will force the client to restart the session with the server.
D. Traffic for this session continues to be permitted on the new primary device after failover, without requiring the client to restart the session with the server.

Answer: D

NEW QUESTION # 124
Refer to the exhibit.

Which two observations can you make about the web filter traffic captured using the flow tool? (Choose two.)

A. The session is offloaded to the NPU.
B. The HTTPS port is mapped to 443 in the SSL/SSH Inspection Profile
C. The firewall policy is configured with proxy-based inspection mode.
D. The web filter profile is configured with proxy-based inspection mode.

Answer: C,D

Explanation:
Analyze the "Send to Application Layer" Message:
The most critical line in the debug output is: id=65308 ... func=av_receive ... msg="send to application layer" Meaning: This message indicates that the FortiGate kernel is handing the packet over to a user-space daemon (specifically the WAD/Proxy process, indicated by av_receive handlers) for deep inspection.
Implication: This behavior is the hallmark of Proxy-based inspection. In Flow-based inspection, the traffic is handled by the IPS engine (often within the kernel or via specific IPS handlers like ips_measure), and you would not typically see a "send to application layer" message for standard web filtering.
Evaluate Option B (Firewall Policy Mode):
Since the traffic is being sent to the application layer proxy, the Firewall Policy controlling this traffic (Policy ID 1, as seen in Allowed by Policy-1) must be configured with Inspection Mode = Proxy. If it were Flow- based, the traffic would stay in the flow path. Thus, Option B is correct.
Evaluate Option C (Web Filter Profile Mode):
In FortiOS, when a firewall policy is set to Proxy-based inspection, the security profiles (like Web Filter) applied to that policy also operate in Proxy-based inspection mode. The presence of the av_receive function confirms that the content inspection (Web Filter/AV) is being performed by the proxy engine. Thus, Option C is correct.
Why Option A is Incorrect (NPU Offload):
The output shows npu_state=0x100. In the context of a flow trace where traffic is being "sent to application layer," this confirms the session is not fully offloaded to the NPU (Network Processor). Offloaded traffic (Fast Path) is handled by the hardware and would not generate these specific CPU-level debug logs for the payload inspection phase. The proxying process requires CPU intervention.
Why Option D is Incorrect (Port Mapping):
While valid protocol mapping is necessary for inspection, the specific debug output shown is a direct result of the Inspection Mode (Proxy vs. Flow). The observation of the traffic moving to the application layer is primarily caused by the policy and profile mode settings, making B and C the direct "observations" derived from the log data.
Reference:
FortiGate Troubleshooting (Debug Flow): "If the debug flow shows msg='send to application layer', it confirms the traffic is being handled by the proxy (WAD) for Proxy-based inspection."

NEW QUESTION # 125
Refer to the exhibit, which shows the port1 interface configuration on FortiGate and partial session information for ICMP traffic.

What happens to the session information if a routing change occurs that affects this session?

A. The session information will not change unless the current route has been removed from the routing table.
B. Only the interface and gateway information for dev=7 will be removed.
C. The session will be flagged as dirty but no route lookups will be performed.
D. Sessions involving port7 or port19 will not have their routing information flushed.

Answer: A

NEW QUESTION # 126
What are two reasons you might see iprope_in_check() check failed, drop when using the debug flow? (Choose two.)

A. Trusted host list misconfiguration.
B. Packet was dropped because of policy route misconfiguration.
C. Packet was dropped because of traffic shaping.
D. VIP or IP pool misconfiguration.

Answer: A,D

Explanation:
The Network Security Support Engineer 7.6 Study Guide explicitly explains this debug message:
"iprope_in_check() check failed, drop" means the packet is destined to a FortiGate IP address and one of these conditions applies:
The service is not enabled
The service is using a different TCP port
The source IP address is not included in the trusted host list
The packet matches a local-in policy with action deny
That directly confirms C. Trusted host list misconfiguration.
Why D is the second valid choice:
The FortiOS administration guide explains that:
"IP pools and VIPs are considered local IP addresses if responding to ARP requests on these external IP addresses is enabled ... the FortiGate is considered a destination for those IP addresses ... once an IP pool or VIP has been configured ... the FortiGate considers it as a local address and will not forward traffic based on the routing table." Because iprope_in_check() is a local-in/local-destination type failure, a VIP or IP pool misconfiguration can cause traffic to be treated as destined for the FortiGate itself, which can then trigger this drop condition if the matching local service/local-in handling is not valid. So D is the closest supported second answer from the available choices.
Why the other options are wrong:
A is wrong because policy route problems are not the documented meaning of this specific debug message. The study guide instead ties iprope_in_check() check failed, drop to management/local-in conditions.
B is wrong because the study guide says traffic shaping drops appear as: "Denied by quota check"

NEW QUESTION # 127
......

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