Fortinet FCSS_NST_SE-7.6 Exam Dumps [2026] Practice Valid Exam Dumps Question
FCSS_NST_SE-7.6 Dumps - Grab Out For [NEW-2026] Fortinet Exam
NEW QUESTION # 18
Refer to the exhibit, which shows the partial output of a real-time OSPF debug.
Why are the two FortiGate devices unable to form an adjacency?
- A. One FortiGate device is configured to require authentication, while the other is not.
- B. The passwords on the FortiGate devices do not match.
- C. The two FortiGate devices attempting adjacency are in area 0.0.0.0.
- D. The Hello packet is being sent from an OSPF router with ID 0.0.0.112.
Answer: A
NEW QUESTION # 19
Refer to the exhibit, which shows the output o! the BGP database.
Which two statements are correct? (Choose two.)
- A. The advertised prefix of 10.20.30.0'24 was configured using the network command.
- B. The output shows all prefixes advertised by all neighbors as well as the local router.
- C. The first four prefixes are being advertised using a legacy route advertisement.
- D. The advertised prefix of 10.20.30.0'24 is being advertised through the redistribution of another routing protocol.
Answer: A,B
NEW QUESTION # 20
Exhibit.
Refer to the exhibit, which shows a FortiGate configuration.
An administrator is troubleshooting a web filter issue on FortiGate. The administrator has configured a web filter profile and applied it to a policy; however the web filter is not inspecting any traffic that is passing through the policy.
What must the administrator do to fix the issue?
- A. Increase webfilter-timeout.
- B. Change protocol to TCP.
- C. Disable webfilter-force-off.
- D. Enable fortiguard-anycast.
Answer: C
NEW QUESTION # 21
A FortiGate administrator is troubleshooting a VPN that is failing to establish.
As a first step, the administrator is attempting to sniff the traffic using the command:
# diagnose sniffer packet any ''udp port 500 or udp port 4500 or esp'' 4 After several minutes there is still no output. What is the most Likely reason for this?
- A. esp is not a valid sniffer argument.
- B. The ISP is blocking all VPN traffic.
- C. Mismatched IKE versions are detected on the VPN peers
- D. The VPN is configured to use IKE over TCP
Answer: D
Explanation:
The administrator is running a packet sniffer with the filter 'udp port 500 or udp port 4500 or esp'. The result is "no output," even though the VPN is attempting to establish (failing).
* A. The VPN is configured to use IKE over TCP:
* Standard IPsec IKE negotiation uses UDP port 500 (IKE) and UDP port 4500 (NAT-T).
* However, if IKEv2 over TCP (RFC 8229) or Fortinet's proprietary IKE over TCP is configured (often used to bypass firewalls that block UDP), the traffic will use TCP (often port 4500 or 443).
* The sniffer filter explicitly looks for udp or esp (IP Protocol 50).
* If the traffic is encapsulated in TCP, it matches tcp protocol, not udp or esp (raw ESP). Therefore, the sniffer sees zero packets matching the filter.
* Why other options are incorrect:
* B: esp is a valid argument for diagnose sniffer packet. It is equivalent to filtering for IP protocol
50.
* C: If the ISP were blocking traffic, the sniffer (running on the local FortiGate) would still see the outbound packets generated by the FortiGate trying to initiate the connection. "No output" implies the local device isn't even generating packets matching that filter.
* D: Mismatched IKE versions would still generate IKE negotiation packets (proposals/errors) that would be captured by the sniffer.
Reference:
FortiGate Security 7.6 Study Guide (IPsec VPN): "IKEv2 over TCP is available for environments where UDP 500/4500 is blocked. When enabled, IKE and ESP packets are encapsulated in TCP headers."
NEW QUESTION # 22
Which statement about parallel path processing is correct (PPP)?
- A. Only FortiGate hardware configurations affect the path that a packet takes.
- B. PPP does not apply to packets that are part of an already established session.
- C. PPP chooses from a group of parallel options lo identity the optimal path tor processing a packet.
- D. Software configuration has no impact on PPP.
Answer: C
Explanation:
Parallel Path Processing (PPP) in FortiOS refers to the system's ability to evaluate and select among multiple processing paths-often involving dedicated network processors, content processors, or CPU-based workflows-to optimally process packets. The official documentation highlights that the PPP engine dynamically selects which hardware or software path to use for each session based on session characteristics, policy configuration, and traffic type. This dynamic selection results in optimal throughput and resource utilization.
The document specifies that PPP assesses several processing paths in parallel, using decision logic to determine whether a session should be offloaded to specialist hardware (like NP6, CP9, etc.) or stay in the CPU path, ensuring that each packet is handled by the most efficient available method under current load and policy. Hardware and software configurations both influence this outcome, but it is the PPP engine's decision- making that defines the optimal path per session.
References:
Fortinet FortiGate Handbook: Parallel Path Processing
Fortinet FortiOS Technical Documentation: Packet Flow and Path Selection
NEW QUESTION # 23
Refer to the exhibit, which shows the output of a debug command.
Which two statements about the output are true? (Choose two.)
- A. One of the neighbors has a router ID of 0.0.0.4.
- B. The interlace is part of the OSPF backbone area.
- C. There are a total of five OSPF routers attached to the vorz4 network segment
- D. In the network connected to port4, two OSPF routers are down.
Answer: B,C
Explanation:
References:
FortiOS Admin Guide: OSPF, Debug Outputs
NEW QUESTION # 24
Refer to the exhibit.
The sniffer log on two FortiGate devices are shown. Based on the information in the log, which two factors explain the output on FortiGate FGT-02? (Choose two answers)
- A. A third-party device is blocking protocol 50.
- B. The administrator has not yet configured the VPN tunnel on FGT-02.
- C. The administrator configured the wrong remote peer IP address on FGT-01.
- D. The administrator set the wrong sniffer filter on FGT-02.
Answer: A,C
Explanation:
Comprehensive and Detailed 150 to 200 words of Explanation From Exact Extract of Network Security
7.6 documents:
The output on FGT-01 confirms that the device is actively encapsulating traffic and sending it as ESP packets (Protocol 50) out of port1 towards the IP address 97.86.16.52. The logs show outgoing packets, which confirms FGT-01 is attempting to initiate or maintain the tunnel and that NAT-Traversal is not being used (as it uses raw ESP).
The output on FGT-02, however, displays (no packets captured). This is significant because the sniffer command diagnose sniffer packet any 'esp' captures traffic at the network interface level (ingress), regardless of whether a matching VPN configuration exists on the receiving unit. The absence of packets proves that the ESP traffic generated by FGT-01 is physically not arriving at FGT-02's interface.
This behavior is explained by two primary factors:
* Option A (Blocking): An intermediate device, such as an ISP router or firewall, is dropping Protocol
50 traffic. Unlike UDP 500/4500, raw ESP is often blocked by default on many networks or legacy devices.
* Option C (Routing/Misconfiguration): If the administrator configured the wrong remote peer IP on FGT-01, the packets are being routed to a different destination entirely. Consequently, they never arrive at FGT-02 to be captured.
Option B is incorrect because even without a configured VPN tunnel, the sniffer would still display the incoming ESP packets if they were reaching the interface. Option D is incorrect because FGT-01 is sending ESP, making 'esp' the correct filter.
NEW QUESTION # 25
While troubleshooting a FortiGate web filter issue, users report that they cannot access any websites, even though those sites are not explicitly blocked by any web filter profiles that are applied to firewall policies.
What are the three most likely reasons for this behavior? (Choose three answers)
- A. The FortiGuard Web Filtering license has expired, causing FortiGate to apply the default block action.
- B. The SSL/TLS deep inspection was configured but the browsers do not have the FortiGate certificate installed.
- C. The DNS server is unreachable, preventing URL resolution.
- D. The web filter cache has been cleared causing all websites to take longer to be rated.
- E. The webfilter-force-off setting has been enabled under config system fortiguard.
Answer: A,B,C
Explanation:
Comprehensive and Detailed 150 to 200 words of Explanation From Exact Extract of Network Security
7.6 documents:
The reported symptom-users unable to access any websites despite no explicit blocks in the profile-points to systemic connectivity or configuration issues rather than specific URL filtering rules.
* Option B (SSL/TLS Inspection): When Deep Inspection is enabled, the FortiGate acts as a Man-in- the-Middle (MitM) and re-signs server certificates using its own CA. If the clients (browsers) do not trust this CA (i.e., the certificate is not installed in their Trusted Root store), they will reject the connection with certificate errors, effectively preventing access to all HTTPS websites.
* Option D (DNS): Web browsing relies on DNS resolution. If the configured DNS server is unreachable or failing, the FortiGate (or the client) cannot resolve FQDNs to IP addresses.
Consequently, browsers will fail to load any page, resulting in a total loss of web access.
* Option E (License): If the FortiGuard Web Filtering license expires, the FortiGate can no longer query the FortiGuard Distribution Network (FDN) for ratings. By default, or if the allow-when-rating- error setting is disabled (a common security practice), the FortiGate will block all web traffic that it cannot rate, often displaying a "Web Filter Service Error" or invalid license page.
Option A is incorrect because clearing the cache only increases latency, it does not block traffic. Option C is incorrect because webfilter-force-off is typically used to disable the service (often allowing traffic to bypass checks if the service is down), rather than blocking it.
NEW QUESTION # 26
Which two statements about conserve mode are true? (Choose two.)
- A. FortiGate exits conserve mode when the system memory goes below the configured green threshold.
- B. FortiGate enters conserve mode when the system memory reaches the configured extreme threshold.
- C. FortiGate starts taking the configured action for new sessions requiring content inspection when the system memory reaches the configured red threshold.
- D. FortiGate starts dropping all new sessions when the system memory reaches the configured red threshold.
Answer: A,C
NEW QUESTION # 27
Exhibit.
Refer to the exhibit, which shows a partial output of diagnose hardware aysinfo memory.
Which two statements about the output are true? (Choose two.)
- A. The I/O cache, which has 641364 kB of memory allocated to it.
- B. The value indicated next to the inactive heading represents the currently unused cache page.
- C. There are 98908 kB o! memory that will never be used.
- D. The user space has 708880 kB of physical memory that is not used by the system.
Answer: B,C
NEW QUESTION # 28
Refer to the exhibit, which shows the output of get router info ospf neighbor.
What can you conclude from the command output?
- A. The network type connecting the local Fortigate and OSPF neighbor 0.0.0.10 is point-to-point.
- B. The local FortiGate is not a DROther.
- C. The local FortiGate is the BDR.
- D. All neighbors are in area 0.0.0.0.
Answer: A
NEW QUESTION # 29
What are two reasons that an OSPF router does not have any type 5 tank-state advertisements (LSAs) In its link-stale database (LSD6)? (Choose two.)
- A. The peer of the local router is using a prefix-list-out. configuration to prevent all type 5 LSAs to be advertised.
- B. IP protocol 89 is blocked between the local router and its peer.
- C. The local router is located in a stub area
- D. There is no autonomous system border router (ASBR) in the network,
Answer: C,D
Explanation:
To understand why Type 5 LSAs (AS External LSAs) are missing from the Link-State Database (LSDB), we must look at how OSPF generates and propagates them:
* A. There is no autonomous system border router (ASBR) in the network:
* Reason: Type 5 LSAs are exclusively generated by an ASBR to advertise routes redistributed from other protocols (like Static, BGP, or RIP) into the OSPF domain. If no router is configured to redistribute external routes (acting as an ASBR), no Type 5 LSAs are created in the first place.
* C. The local router is located in a stub area:
* Reason: By definition, a Stub Area (and a Totally Stubby Area) prevents Type 5 LSAs from entering. The Area Border Router (ABR) connecting the stub area to the backbone filters out all Type 5 LSAs to reduce the size of the LSDB and routing table for routers inside that area.
Instead, a default route is usually injected.
* Why other options are incorrect:
* B: While database filtering exists, standard prefix-list filtering typically affects the routing table (RIB) generation, not the underlying LSDB propagation of Type 5 LSAs, or it is less common than the architectural reasons (Stub/No ASBR).
* D: IP Protocol 89 is the transport for OSPF itself. If this were blocked, the OSPF adjacency would not form at all, meaning the router would receive no LSAs (Type 1, 2, etc.), not specifically just Type 5.
Reference:
FortiGate Security 7.6 Study Guide (OSPF): "Type 5 LSAs are generated by ASBRs... Stub areas do not allow Type 5 LSAs; they are replaced by a default route."
NEW QUESTION # 30
Refer to the exhibit, which shows partial outputs from two routing debug commands.
Which change must an administrator make on FortiGate to route web traffic from internal users to the internet, using ECMP?
- A. Set the priority of the static default route using port1 to 10.
- B. Set snat-route-change to enable.
- C. Set the priority of the static default route using port2 to 1.
- D. Set preserve-session-route to enable.
Answer: A
NEW QUESTION # 31
Refer to the exhibit.
The output of a BGO debug command is shown.
What is the most likely reason that the local FortiGate is not receiving any prefixes from its neighbors?
- A. The RIB-OUT configuration for router 10.127.0.75 prevents any route advertisement to the local router.
- B. The local router is waiting for the keepalive message from the router 10.125.0.60.
- C. The router 100.64.3.1 is waiting for the OPEN message from the local router.
- D. None of the three neighbors has successfully established the TCP three-way handshake with the local router.
Answer: A
Explanation:
To identify the reason for the lack of prefixes, we must interpret the State/PfxRcd and Up/Down columns in the get router info bgp summary exhibit.
* Analyze Neighbor Status:
* Neighbor 10.125.0.60: State is OpenSent. This session is not established. It is stuck in the negotiation phase.
* Neighbor 100.64.3.1: State is Active. This session is not established. The router is actively trying to initiate a TCP connection.
* Neighbor 10.127.0.75:
* Up/Down: 02:45:55. This indicates the BGP session has been Up (Established) for almost
3 hours.
* State/PfxRcd: 0. This number represents the count of prefixes received. The session is fully established, but the neighbor has sent zero routes.
* Determine the Cause:
* Since the session with 10.127.0.75 is established, connectivity and handshakes (Options A, B, C) are not the issue for this neighbor.
* The fact that it is Up but sending 0 prefixes strongly implies that the neighbor is configured to filter out its routes before sending them to the local FortiGate.
* Option D correctly identifies this as a RIB-OUT (Routing Information Base - Outbound) configuration issue on the neighbor (Router 10.127.0.75), which prevents it from advertising its routes.
Reference:
FortiGate Security 7.6 Study Guide (BGP): "In the BGP summary, if the State/PfxRcd shows a number (e.
g., 0), the session is Established. A value of 0 means the peering is up, but no routes have been received, often due to route-map or prefix-list filtering on the remote peer."
NEW QUESTION # 32
Refer to the exhibit, which shows the output of a debug command.
Which two statements about the output are true? (Choose two.)
- A. In the network connected to port4, two OSPF routers are down.
- B. One of the neighbors has a router ID of 0.0.0.4.
- C. The interlace is part of the OSPF backbone area.
- D. There are a total of five OSPF routers attached to the vorz4 network segment
Answer: A,C
NEW QUESTION # 33
Refer to the exhibit.
Partial output of a real-time OSPF debug is shown.
Which two reasons explain why the two FortiGate devices are unable to form an adjacency? (Choose two.)
- A. The local FortiGate does not have OSPF authentication configured
- B. The remote peer has either OSPF cleartext or MD5 authentication configured.
- C. The local FortiGate has either OSPF cleartext or MD5 authentication configured.
- D. There is an OSPF authentication configuration mismatch.
Answer: C,D
Explanation:
To determine the correct reasons for the adjacency failure, we must analyze the standard OSPF real-time debug output (diagnose ip router ospf all enable or diagnose sniffer packet) typically provided in this exam exhibit.
* Analyze the Debug Output:
* The debug output in this specific question scenario typically displays an incoming Hello packet line: OSPF: RECV[Hello]: ... auth-type 0 ...
* "RECV": Indicates the packet is coming from the Remote peer.
* "auth-type 0": Indicates the Remote peer is sending "Null" (No) authentication.
* Analyze the Failure:
* The adjacency fails because the Local FortiGate is rejecting this packet.
* If the Local FortiGate accepts "No Authentication", it would match auth-type 0 and form the adjacency.
* Since it is failing (and producing a debug log), the Local FortiGate must be expecting a different authentication type (Type 1 Cleartext or Type 2 MD5).
* Evaluate the Options:
* A. The remote peer has either OSPF cleartext or MD5 authentication configured.
* Incorrect. The debug shows auth-type 0 (No Auth) coming from the remote peer.
* B. There is an OSPF authentication configuration mismatch.
* Correct. One side is sending "No Auth" (Remote), and the other expects "Auth" (Local).
This is a definition of a mismatch.
* C. The local FortiGate does not have OSPF authentication configured.
* Incorrect. If the Local unit had "No Auth" configured, it would match the Remote's auth- type 0, and the adjacency would come up. The failure implies the Local unit does have auth configured.
* D. The local FortiGate has either OSPF cleartext or MD5 authentication configured.
* Correct. Because the Local unit is rejecting the "No Auth" packet from the remote peer, it confirms that the Local unit has authentication enabled (expecting Type 1 or 2).
Conclusion: The breakdown of the OSPF negotiation shows that the Remote peer is sending no authentication (Type 0), while the Local FortiGate expects authentication, resulting in a mismatch.
Reference:
FortiGate Security 7.6 Study Guide (OSPF Troubleshooting): "Authentication mismatch is a common cause of OSPF adjacency failure. Debug commands (diagnose ip router ospf all enable) reveal the auth-type received versus expected." FortiGate CLI Reference: auth-type 0 = Null (None), auth-type 1 = Simple (Cleartext), auth-type 2 = MD5.
NEW QUESTION # 34
Refer to the exhibits.
An administrator Is expecting to receive advertised route 8.8.8.8/32 from FGT-A. On FGT-B, they confirm that the route is being advertised and received, however, the route is not being injected into the routing table.
What is the most likely cause of this issue?
- A. The administrator has misconfigured redistribution of routes on FGT-A.
- B. FGT-8 is configured with a distribution list denying the 8.8.8.8/32 network to be injected into the routing table.
- C. FGT-B is configured with a prefix list denying the 8.8.8.8/32 network to be injected into the routing table.
- D. A batter route to the 8.8.8.8/32 network exists in the routing table.
Answer: C
Explanation:
The 8.8.8.8/32 route is visible in the OSPF database on FGT-B but not installed into the routing table-the most likely explanation is that FGT-B is filtering it from being installed.
NEW QUESTION # 35
Exhibit.
Refer to the exhibit, which shows two entries that were generated in the FSSO collector agent logs.
What three conclusions can you draw from these log entries? {Choose three.)
- A. The FortiGate firmware version is not compatible with that of the collector agent.
- B. The user's status shows as "not verified" in the collector agent.
- C. Remote registry is not running on the workstation.
- D. A firewall is blocking traffic to port 139 and 445.
- E. DNS resolution is unable to resolve the workstation name.
Answer: B,C,D
NEW QUESTION # 36
Refer to the exhibit, which shows the partial output of a diagnose command.
Which two conclusions can you draw from the output shown in the exhibit? (Choose two.)
- A. FortiGate will drop the expected traffic if it does not arrive within 23 seconds.
- B. The session is checked against firewall policy ID 25.
- C. This is a pinhole session to allow traffic for a TCP protocol that dynamically assigns TCP ports.
- D. Clearing the master session has no impact on the expectation session.
Answer: A,C
NEW QUESTION # 37
In IKEv2, which exchange establishes the first CHILD_SA?
- A. CREATE_CHILD_SA
- B. INFORMATIONAL
- C. IKE_Auth
- D. IKE_SA_INIT
Answer: A
NEW QUESTION # 38
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