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| Section | Weight | Objectives |
|---|---|---|
| Monitoring and Risk Assessment | 25% | - Threat detection using FortiSIEM 7.4 - OT-focused risk assessment and management - Event handling and logging with FortiAnalyzer 7.6 |
| Asset Management | 25% | - Device detection and inventory using FortiGate & FortiNAC - OT security standards and compliance (IEC 62443, NIST) - Fortinet Security Fabric for OT environments |
| Network Access Control | 25% | - Purdue Model and secure network segmentation - Authentication and access policies for OT devices - OT Ethernet and industrial communication models |
| Network Security | 25% | - Deep inspection for industrial protocols (Modbus, DNP3, OPC) - Virtual patching for legacy OT systems - Security automation and threat response |
>> NSEI_OTS_AR-7.6 New Questions <<
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NEW QUESTION # 14
Which industrial protocol does not support VLANs? (Choose one answer)
Answer: C
Explanation:
The correct answer is C. EtherCAT .
The study guide states that for industrial Ethernet protocols, "such as Ethernet/IP and Modbus/TCP, you can use VLANs to segment your physical LAN into multiple logical LANs." This directly confirms that Ethernet/IP and Modbus/TCP support VLAN-based segmentation in the OT context.
By contrast, the guide explains that "EtherCAT skips layers 3 to 6 to deliver real-time communication" and describes it as an "Open-Software Modified-Ethernet" approach. Because it does not operate like the standard Ethernet/IP model used for normal VLAN-based segmentation, EtherCAT is the protocol identified here as not supporting VLANs in the way Ethernet/IP and Modbus/TCP do.
So, based on the study guide comparison, the verified answer is EtherCAT .
NEW QUESTION # 15
For the installation of your first FortiGate device, you want to minimize the impact in your OT network.
Therefore, you deploy it initially as an offline IDS. Which two statements about this deployment are correct?
(Choose two answers)
Answer: C,D
Explanation:
Deploying a FortiGate in offline IDS (also known as one-arm sniffer mode) is a common strategy in OT environments for several reasons found in the study guide:
* Priority of Availability : In OT, availability and safety are critically important and prioritized higher than in IT. An offline IDS minimizes impact because it does not sit in the direct path of production traffic.
* Network Sensor Role : In this mode, the FortiGate is connected to a mirror/SPAN port on a switch. It acts as a network sensor , receiving a copy of the traffic rather than having the traffic flow through it.
This confirms Statement A is correct and Statement D is incorrect.
* Passive vs. Active : The guide explicitly states that in OT environments, passive methods are preferred over active methods to avoid negatively impacting performance or causing process interruptions.
* Depth of Visibility : Even though the device is offline, you apply security profiles (such as IPS, Application Control, and Antivirus) to the sniffer interface. This allows the FortiGate to analyze the copied traffic and provide deep visibility into the OT assets and their behaviors. This confirms Statement B is correct.
* Detection vs. Prevention : An IDS (Intrusion Detection System) is passive ; it can detect threats but cannot reset connections or drop packets to block attacks. Therefore, it cannot block zero-day attacks, making Statement C incorrect.
NEW QUESTION # 16
Refer to the exhibit.
A Virtual Patching profile is shown. You have recently updated your SCADA system and would like to apply the SCADA virtual patching profile. Which two statements about this profile are correct? (Choose two answers)
Answer: A,C
Explanation:
The correct answers are B and D .
Option B is correct because the profile has Medium , High , and Critical selected, while Low severity is not selected. That means low-severity virtual patching signatures are not enforced by this profile. So for the device with MAC address 12:12:12:12:12 , low-severity signatures are not blocked. The study guide explains virtual patching as device-specific protection where "FortiGate caches the signatures and mitigation rules that apply to each device" and applies them when the related traffic matches the firewall policy.
Option D is correct because the Virtual Patching Exemptions table shows a row with the MAC address 11:
11:11:11:11 and no specific signature listed. The study guide states that in the Virtual Patching profile you can "Exempt a specific device with the MAC address or a specific signature." A MAC-only exemption means that specific device is excluded from virtual patching enforcement, so in practical terms it is treated as having no applicable vulnerabilities in this profile.
Option C is incorrect because the profile does not block critical signatures for all devices. The exemptions list proves that at least one device can be excluded by MAC address, and a specific signature can also be exempted. Therefore, enforcement is not universal across all devices.
Option A is incorrect because the entry Schneider.Electric.ClearSCADA.HTTP.Interface.XSS appears as a specific signature exemption , not as the only remaining vulnerability. The profile display is showing exemptions, not a statement that only one vulnerability is still present.
NEW QUESTION # 17
According to the IEC 62443 standard, your security level is 4 . What is your OT environment defending against? (Choose one answer)
Answer: C
Explanation:
According to the OT Security 7.6 Architect study guide regarding IEC 62443 Security Levels :
* Security Level 4 (SL 4) Definition : This level provides " Protection against intentional violation using sophisticated means with extended resources, specific skills, and high motivation " .
* Real-World Application : The study guide specifically notes: " If you are facing a syndicate of cyber extortionists with extensive resources and capabilities, then you should strive for security level 4 " .
* Comparison to other levels :
* SL 1 : Protection against " casual or unintentional system violation " .
* SL 2 : Protection against " intentional violation using simple means with low resources " .
* SL 3 : Protection against " intentional violation using sophisticated means with moderate resources " .
NEW QUESTION # 18
In the Purdue model, at which level are physical assets like the Industrial Internet of Things (IIoT) placed?
(Choose one answer)
Answer: D
Explanation:
According to the OT Security 7.6 Architect study guide regarding the Purdue Model :
* Asset Location : The study guide states that " All critical physical assets are located on the plant floor and equipped with IIoT sensors. "
* Level Classification : The " plant floor " is further defined as the " control area zone, " which consists of Levels 0, 1, and 2 .
* Hierarchy : The " Operations & Control " zone is identified as Level 3 and Level 3.5 .
* Direct Answer : In the " Introduction " lesson ' s Knowledge Check , the specific question " In the Purdue model, at which level are IIoTs placed? " is provided with the verified answer: Below Level 3.5 .
NEW QUESTION # 19
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