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| Section | Objectives |
|---|---|
| Topic 1: Network security | - Configure security inspections for industrial protocols - Configure virtual patching - Configure automation |
| Topic 2: Monitoring and risk assessment | - Create FortiAnalyzer event handlers - Perform risk assessment and management - Analyze security reports from FortiAnalyzer |
| Topic 3: Asset management | - Implement device detection on FortiGate and FortiNAC - Explain OT standard and Fortinet compliance - Fortinet Security Fabric for an OT network |
| Topic 4: Network access control | - Configure network access authentication - Explain OT Ethernet concepts - Configure network segmentation schemas |
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50. Frage
Refer to the exhibit.
A partial OT network is shown. In this OT network, you must add additional security measures to detect OT protocols and, therefore, increase the traffic visibility. Which security sensor must you implement to detect the OT protocols in this network? (Choose one answer)
Antwort: A
Begründung:
The correct answer is C. Application sensor set to monitor on all the FortiGate devices .
The study guide clearly explains that application control is the feature used to identify OT protocols. It states that "application control detects the protocols used in applications like Modbus, IEC 104, and the contents of the telecontrol messages" and also says "You can use application control signatures to detect OT protocols." It further shows an example where a Modbus application control profile is enabled on a firewall policy "for OT protocol visibility in the monitor status." This directly matches the requirement in the question, which is to detect OT protocols and increase traffic visibility .
The other options do not fit the requirement as precisely. Device detection is for identifying devices and collecting endpoint information, not for detecting industrial protocols. Inline IDS and IPS are focused more on detecting or blocking attacks, exploits, protocol abnormalities, and known vulnerabilities. While IPS can inspect some OT traffic, the study guide distinguishes it from application control by stating that IPS signatures tend to detect exploits, whereas application control signatures tend to provide protocol detection at various levels . Therefore, the required security sensor for OT protocol detection and traffic visibility is the application sensor in monitor mode .
51. Frage
Refer to the exhibit.
A simplified OT network is shown. You want to optimize the protection of this OT network. Which two controls must you implement? (Choose two answers)
Antwort: A,B
Begründung:
The correct answers are B. IPS on FortiGate_Level5 and C. Virtual patching on FortiGate_Level2 .
The study guide explains that "the first line of defense is securing the IT side of your network" and that FortiGate should be placed to protect ICS environments and stop threats from propagating from IT into OT. It also states that IPS improves OT security because "today's threat landscape requires IPS to block a wider range of threats and improve OT security" and that in IPS mode, vulnerable devices are protected . This makes FortiGate_Level5 , at the upper boundary near the DMZ and external connectivity, the correct place to implement IPS as a primary protection control.
The study guide also states in the Purdue model section that "Level 2 consists of the processes and programs that control the PLCs, RTUs, and IEDs found at Level 1" and that "it is necessary to segment, or even microsegment, these servers with firewall segmentation, along with policies that include application control and virtual patching." In addition, the virtual patching section says "Virtual patching protects OT devices that have not yet been updated against vulnerability exploits" and applies when traffic related to the vulnerable device reaches the firewall policy. Since FortiGate_Level2 sits between the process network and the control network, it is the right enforcement point for virtual patching to protect the PLC-side assets.
Option A is not one of the best answers because offline IDS only detects and logs attacks; the guide says "no traffic flows through FortiGate" in offline IDS mode, whereas IPS can actually block threats. Option D is also not the best answer because OT signatures are enabled within the IPS framework, but the stronger control explicitly described for this design is to deploy IPS at the upper boundary and virtual patching closer to vulnerable OT devices .
52. Frage
Refer to the exhibit.
A partial Application Sensor profile is shown. When you apply this profile in a firewall policy, which two statements are correct? (Choose two answers)
Antwort: A,C
Begründung:
The correct answers are A and C .
Option C is correct because the profile clearly contains the Operational Technology category and specific OT application signatures such as Modbus and IEC.60870.5.104 . The study guide says "You can use application control signatures to detect OT protocols" and "You can filter to a specific OT protocol." That means OT application signatures are active in this sensor profile.
Option A is correct because the guide explains that application control works at different levels: "Detection of protocol (one detection per session)" and "Message level (one detection per protocol message)." It also says you can use application signatures for "granular message type identification." In the exhibit, IEC.
60870.5.104.Control.Functions is explicitly configured, which is a granular IEC message/control-level signature rather than only a protocol-level match. That means logging and control can occur at the IEC command level.
Option B is not correct because the profile shows Modbus configured at the parent protocol level as Monitor
, while the guide states that the "parent signature takes precedence over the child signature." Since protocol-level detection is one detection per session , that does not mean FortiGate will necessarily log each Modbus command individually.
Option D is incorrect because even though the broader Operational Technology category is set to block, the profile includes specific application and filter overrides for Modbus and IEC 104 behavior. So the resulting effect is not simply that all OT protocols are blocked .
53. Frage
How are rogue devices evaluated in FortiNAC? (Choose one answer)
Antwort: C
Begründung:
The correct answer is A. Through device profiling rules . The study guide states: "When a rogue device record is created, the device is evaluated against the enabled device profiling rules." It further explains that "FortiNAC evaluates a device against each rule until a failed, passed, or cannot evaluate result is reached." That is the direct evaluation mechanism used for rogue devices in FortiNAC.
The guide also adds that "Device profiling rules are used to evaluate and classify rogue devices" and that FortiNAC applies rule methods and classification settings to determine whether the device matches a known type. This is why the other options are incorrect: FortiGuard server queries and the local device database (CIDB) relate to FortiGate device detection workflows, not FortiNAC rogue-device evaluation, and importing a devices list is not the evaluation method described for rogue devices.
54. Frage
You want to improve access control for your large OT network using passive authentication. What must you configure on FortiGate? (Choose one answer)
Antwort: D
Begründung:
The correct answer is A. Fortinet Single-Sign On (FSSO) . The study guide states under Active and Passive Authentication that for passive authentication, "User does not receive a login prompt from FortiGate" ,
"Credentials are determined automatically" , and specifically "FSSO, RSSO, and NTLM can be used." It then explains that passive authentication occurs with the single sign-on method and explicitly identifies Fortinet SSO (FSSO) as one of those methods.
The guide also says: "For passive authentication, you can implement FSSO. FSSO allows users who have already authenticated on the network through another system to be transparently identified. After initial login to any system on the network, users can access allowed resources without being prompted for credentials." That is exactly what the question asks for: improving access control in a large OT network using passive authentication .
The other options do not match passive authentication. Local users are part of local authentication, two- factor authentication adds an extra security factor but still uses active authentication, and FortiAuthenticator as a remote server supports centralized authentication for mid-to-large networks, but by itself it is not the specific passive-authentication method being asked here. The study guide is explicit that the FortiGate configuration for passive authentication is FSSO .
55. Frage
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