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| Section | Objectives |
|---|---|
| Topic 1: Monitoring and Risk Assessment | - Analyze security reports from FortiAnalyzer - Perform risk assessment and management - Create FortiAnalyzer event handlers |
| Topic 2: Network Security | - Configure automation - Configure virtual patching - Configure security inspections for industrial protocols |
| Topic 3: Network Access Control | - Configure network access authentication - Configure network segmentation schemas - Explain OT Ethernet concepts |
| Topic 4: Asset Management | - Implement device detection on FortiGate and FortiNAC - Explain OT standards and Fortinet compliance - Use Fortinet Security Fabric for an OT network |
>> Fortinet NSEI_OTS_AR-7.6考題寶典 <<
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問題 #47
Refer to the exhibit.
A partial Incident Analysis page is shown. How was the 360-Degree Security Review OT report attached to the incident? (Choose one answer)
答案：D
解題說明：
The study guide says playbooks are used to automate tasks such as running reports and creating/updating incidents . It also says that after a playbook is triggered, it flows through its configured tasks.
It further shows a sample playbook sequence where an event is detected, an incident is created , a report runs , and details are attached to the incident . That is exactly the kind of workflow shown in the incident analysis view.
By contrast, the study guide says event handlers generate events when logs match configured rules. Event handlers are for detection, not for attaching reports to incidents.
問題 #48
In the Purdue model, at which level are physical assets like the Industrial Internet of Things (IIoT) placed?
(Choose one answer)
答案：C
解題說明：
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 .
問題 #49
Refer to the exhibit.
A FortiAnalyzer report is shown.
You must extract relevant information provided by the report regarding your OT network.
Which two statements are correct? (Choose two.)
答案：A,D
解題說明：
The correct answers are B and C . The exhibit ' s Top Threat section identifies the IPS threats as Blocked , directly confirming that the attacks were prevented rather than merely detected. The OT Traffic table also shows destination port 502 . Modbus/TCP conventionally operates on TCP port 502, and the OT Security 7.6 study guide identifies Modbus as an industrial protocol supported and inspected by Fortinet OT security controls. The report does not cover only one day; its displayed timeline spans multiple dates, from approximately October 30 through November 3. Option D is also inconsistent with the report because the visible OT destination addresses are associated with the 192.168.x.x networks rather than 10.1.5.1.
FortiAnalyzer reports summarize logged information into charts and tables specifically to expose traffic patterns, threats, and OT activity such as this.
問題 #50
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)
答案：A,D
解題說明：
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 .
問題 #51
You want to improve the security of your OT network and therefore deploy a FortiGate device with the OT signatures database. Which two statements about this database are true? (Choose two answers)
答案：C,D
解題說明：
The correct answers are A and D .
Option A is correct because the study guide states that for OT protocol coverage, "a valid OT security service license is required to receive updates on both intrusion prevention and application control signatures." It also shows "Valid license required" in the FortiGuard subscriptions section for OT protocol coverage. This confirms that a valid OT security service license is required to use and maintain the OT signatures database correctly.
Option D is also correct because the guide explicitly shows the CLI configuration used "To enable OT signatures" :
config ips global
set exclude-signatures none
end
It then states that "By default, OT signatures are excluded from the signatures lists on the GUI until you enable them on the CLI." This directly confirms that you must set exclude-signatures to none in the CLI to enable OT signatures.
Option B is incorrect because the study guide does not say you manually import the OT signatures database.
Instead, it explains that FortiGuard maintains updated OT signatures and that a valid license is required to receive updates. Option C is incorrect because the guide clearly says OT signatures are excluded by default until enabled from the CLI.
問題 #52
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NSEI_OTS_AR-7.6參考資料: https://www.vcesoft.com/NSEI_OTS_AR-7.6-pdf.html