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Fortinet FCSS_NST_SE-7.6 Exam Syllabus Topics:

TopicDetails
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
  • 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.
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
  • 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 5
  • 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.

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Fortinet FCSS - Network Security 7.6 Support Engineer Sample Questions (Q45-Q50):

NEW QUESTION # 45
Refer to the exhibit.

A partial output from an IKE real-time debug is shown
The administrator does not have access to (he remote gateway
Based on the debug output, which two conclusions can you draw? (Choose two.)

Answer: B,D

Explanation:
To determine the correct conclusions, we analyze the specific lines in the IKE real-time debug output provided in the exhibit:
Analysis for Option A (The remote peer is the initiating peer):
Evidence: The very first line of the debug output reads: ike 0:624000:98: responder: main mode get 1st message...
The keyword responder indicates that this local FortiGate is receiving the connection request. Consequently, the remote peer must be the initiator sending the request. The phrase "get 1st message" confirms the local unit is receiving the initial packet of the negotiation sequence.
Conclusion: This statement is True.
Analysis for Option B (This is a phase 1 negotiation):
Evidence: The same line mentions main mode.
In IPsec VPNs, Main Mode and Aggressive Mode are exclusively used for Phase 1 (IKE SA) negotiations.
Phase 2 (Child SA) negotiations use Quick Mode. The presence of "main mode" definitively identifies this as a Phase 1 exchange.
Conclusion: This statement is True.
Analysis for Option C (There is a Diffie-Hellman group mismatch):
Evidence:
Incoming proposal (Remote): Lists type=OAKLEY_GROUP, val=MODP2048 (Group 14) in the first proposal proposal.
My proposal (Local): Lists type=OAKLEY_GROUP, val=MODP2048 (Group 14).
Since both the remote peer and the local gateway support and are proposing MODP2048 (Group 14), there is no Diffie-Hellman group mismatch. The actual mismatch visible in the logs is between the Encryption/Hash algorithms (Remote proposes AES-256/SHA2-256, while Local proposes AES-128/SHA), but the DH groups match.
Conclusion: This statement is False.
Analysis for Option D (This is a phase 2 negotiation):
As established in the analysis for Option B, "Main Mode" is a Phase 1 protocol. If this were Phase 2, the debug would show "Quick Mode".
Conclusion: This statement is False.
Reference:
FortiGate Security 7.6 Study Guide (IPsec VPN): "Phase 1 modes: Main mode and Aggressive mode." FortiOS Debugging documentation: Explains that "responder" indicates the device receiving the IKE initialization.


NEW QUESTION # 46
Refer to the exhibit.

The partial output of FortiOS kernel slabs is shown. Which statement about total slab size is true?

Answer: B

Explanation:
The correct answer is B .
The study guide explicitly states that slabs are used by the kernel : "The kernel memory slabs are collections of objects with a common purpose. The kernel uses them to store information in memory." It also gives the exact calculation method: "Total slab size = available objects x object size" and explains that in the diagnose hardware sysinfo slab output, the columns are active objects , available objects , and object size From the exhibit:
* tcp_session 3 5 1500 ...
* available objects = 5
* object size = 1500
So:
Total slab size = 5 ร— 1500 = 7500
That matches option B .
Why the other options are wrong:
* A : ip_session 10 10 1408 ... gives 10 ร— 1408 = 14080 , but slabs are associated with the kernel , not user space
* C : ip6_session 5 0 1472 ... gives 0 ร— 1472 = 0 , not 1472
* D : UDPv6 15 10 1408 ... gives 10 ร— 1408 = 14080 , but again slabs are associated with the kernel , not user space So the verified answer is B .


NEW QUESTION # 47
Refer to the exhibit, which contains partial output from an IKE real-time debug.

The administrator does not have access to the remote gateway.
Based on the debug output, which configuration change the administrator make to the local gateway to resolve the phase 1 negotiation error?

Answer: A


NEW QUESTION # 48
Refer to the exhibit, which shows the omitted output of a session table entry.

Which two statements are true? (Choose two.)

Answer: A,C


NEW QUESTION # 49
In IKEv2, which exchange establishes the first CHILD_SA?

Answer: A

Explanation:
The correct answer is D. IKE_AUTH.
The study guide explicitly states:
"IKE_Auth exchange:
* Performs the mutual authentication of two IKE endpoints.
* Configures settings like IP/mask, DNS, and so on.
* Sets up the piggyback of a child SA. Negotiates IP flow and security settings for the IPsec SA." It also says:
"By default, a piggyback child (IPsec) SA is negotiated along with the IKEv2 SA during IKE_AUTH. If additional IPsec SAs are needed ... they are negotiated during subsequent CREATE_CHILD_SA exchanges." Why the other options are wrong:
A . IKE_SA_INIT is incorrect because this exchange negotiates the security settings to protect the IKE traffic, not the first CHILD_SA.
B . INFORMATIONAL is incorrect because it is used to convey control messages between IKE endpoints.
C . CREATE_CHILD_SA is incorrect for the first CHILD_SA, because it is used to create new additional child SAs or rekey existing ones after the initial exchange.


NEW QUESTION # 50
......

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