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Fortinet NSE 7 - OT Security 7.2 Questions and Answers

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Question 1

The OT network analyst runs different level of reports to quickly explore threats that exploit the network. Such reports can be run on all routers, switches, and firewalls. Which FortiSIEM reporting method helps to identify these type of exploits of image firmware files?

Options:

CMDB reports

Threat hunting reports

Compliance reports

OT/loT reports

Question 2

in an operation technology (OT) network FortiAnalyzer is used to receive and process logs from responsible FortiGate devices

Which statement about why FortiAnalyzer is receiving and processing multiple tog messages from a given programmable logic controller (PLC) or remote terminal unit (RTU) is true'?

Options:

To determine which type of messages from the PLC or RTU causes issues in the plant

To isolate PLCs or RTUs in the event of external attacks

To help OT administrators troubleshoot and diagnose the OT network

To track external threats and prevent them attacking the OT network

Question 3

Which three Fortinet products can be used for device identification in an OT industrial control system (ICS)? (Choose three.)

Options:

FortiNAC

FortiManager

FortiAnalyzer

FortiSIEM

FortiGate

Question 4

What are two benefits of a Nozomi integration with FortiNAC? (Choose two.)

Options:

Enhanced point of connection details

Direct VLAN assignment

Adapter consolidation for multi-adapter hosts

Importation and classification of hosts

Question 5

Refer to the exhibit.

PLC-3 and CLIENT can send traffic to PLC-1 and PLC-2. FGT-2 has only one software switch (SSW-1) connecting both PLC-3 and CLIENT. PLC-3 and CLIENT can send traffic to each other at the Layer 2 level.

What must the OT admin do to prevent Layer 2-level communication between PLC-3 and CLIENT?

Options:

Set a unique forward domain for each interface of the software switch.

Create a VLAN for each device and replace the current FGT-2 software switch members.

Enable explicit intra-switch policy to require firewall policies on FGT-2.

Implement policy routes on FGT-2 to control traffic between devices.

Question 6

What can be assigned using network access control policies?

Options:

Layer 3 polling intervals

FortiNAC device polling methods

Logical networks

Profiling rules

Question 7

Refer to the exhibit.

Based on the topology designed by the OT architect, which two statements about implementing OT security are true? (Choose two.)

Options:

Firewall policies should be configured on FortiGate-3 and FortiGate-4 with industrial protocol sensors.

Micro-segmentation can be achieved only by replacing FortiGate-3 and FortiGate-4 with a pair of FortiSwitch devices.

IT and OT networks are separated by segmentation.

FortiGate-3 and FortiGate-4 devices must be in a transparent mode.

Question 8

Refer to the exhibit.

An OT network security audit concluded that the application sensor requires changes to ensure the correct security action is committed against the overrides filters.

Which change must the OT network administrator make?

Options:

Set all application categories to apply default actions.

Change the security action of the industrial category to monitor.

Set the priority of the C.BO.NA.1 signature override to 1.

Remove IEC.60870.5.104 Information.Transfer from the first filter override.

Answer:

Explanation:

According to the Fortinet NSE 7 - OT Security 6.4 exam guide1, the application sensor settings allow you to configure the security action for each application category andnetwork protocol override. The security action determines how the FortiGate unit handles traffic that matches the application category or network protocol override. The security action can be one of the following:

Allow: The FortiGate unit allows the traffic without any further inspection.

Monitor: The FortiGate unit allows the traffic and logs it for monitoring purposes.

Block: The FortiGate unit blocks the traffic and logs it as an attack.

The priority of the network protocol override determines the order in which the FortiGate unit applies the security action to the traffic. The lower the priority number, the higher the priority. For example, a priority of 1 is higher than a priority of 10.

In the exhibit, the application sensor has the following settings:

The industrial category has a security action of allow, which means that the FortiGate unit will not inspect or log any traffic that belongs to this category.

The IEC.60870.5.104 Information.Transfer network protocol override has a security action of block, which means that the FortiGate unit will block and log any traffic that matches this protocol.

The IEC.60870.5.104 Control.Functions network protocol override has a security action of monitor, which means that the FortiGate unit will allow and log any traffic that matches this protocol.

The IEC.60870.5.104 Start/Stop network protocol override has a security action of allow, which means that the FortiGate unit will not inspect or log any traffic that matches this protocol.

The IEC.60870.5.104 Transfer.C.BO.NA.1 network protocol override has a security action of block, which means that the FortiGate unit will block and log any traffic that matches this protocol.

The problem with these settings is that the IEC.60870.5.104 Transfer.C.BO.NA.1 network protocol override has a lower priority than the IEC.60870.5.104 Information.Transfer network protocol override. This means that if the traffic matches both protocols, the FortiGate unit will apply the security action of the higher priority override, which is block. However, the IEC.60870.5.104 Transfer.C.BO.NA.1 protocol is used to transfer binary outputs, which are essential for controlling OT devices. Therefore, blocking this protocol could have negative consequences for the OT network.

To fix this issue, the OT network administrator must set the priority of the IEC.60870.5.104 Transfer.C.BO.NA.1 network protocol override to 1, which is higher than the priority of the IEC.60870.5.104 Information.Transfer network protocol override. This way, the FortiGate unit will apply the security action of the lower priority override, which is allow, to the traffic that matches both protocols. This will ensure that the FortiGate unit does not block the traffic that is used to transfer binary outputs, while still blocking the traffic that is used to transfer information.

1: NSE 7 Network Security Architect - Fortinet

Question 9

Refer to the exhibits.

Which statement is true about the traffic passing through to PLC-2?

Options:

IPS must be enabled to inspect application signatures.

The application filter overrides the default action of some IEC 104 signatures.

IEC 104 signatures are all allowed except the C.BO.NA 1 signature.

SSL Inspection must be set to deep-inspection to correctly apply application control.

Question 10

The OT network analyst run different level of reports to quickly explore failures that could put the network at risk. Such reports can be about device performance. Which FortiSIEM reporting method helps to identify device failures?

Options:

Business service reports

Device inventory reports

CMDB operational reports

Active dependent rules reports

Question 11

When you create a user or host profile, which three criteria can you use? (Choose three.)

Options:

Host or user group memberships

Administrative group membership

An existing access control policy

Location

Host or user attributes

Question 12

Refer to the exhibits.

Which statement about some of the generated report elements from FortiAnalyzer is true?

Options:

The report confirms Modbus and IEC 104 are the key applications crossing the network.

FortiGate collects the logs and generates the report to FortiAnalyzer.

The file types confirm the infected applications on the PLCs.

This report is predefined and is not available for customization.

Question 13

In a wireless network integration, how does FortiNAC obtain connecting MAC address information?

Options:

RADIUS

Link traps

End station traffic monitoring

MAC notification traps

Question 14

To increase security protection in an OT network, how does application control on ForliGate detect industrial traffic?

Options:

By inspecting software and software-based vulnerabilities

By inspecting applications only on nonprotected traffic

By inspecting applications with more granularity by inspecting subapplication traffic

By inspecting protocols used in the application traffic

Question 15

An OT supervisor has configured LDAP and FSSO for the authentication. The goal is that all the users be authenticated against passive authentication first and, if passive authentication is not successful, then users should be challenged with active authentication.

What should the OT supervisor do to achieve this on FortiGate?

Options:

Configure a firewall policy with LDAP users and place it on the top of list of firewall policies.

Enable two-factor authentication with FSSO.

Configure a firewall policy with FSSO users and place it on the top of list of firewall policies.

Under config user settings configure set auth-on-demand implicit.

Question 16

FortiAnalyzer is implemented in the OT network to receive logs from responsible FortiGate devices. The logs must be processed by FortiAnalyzer.

In this scenario, which statement is correct about the purpose of FortiAnalyzer receiving and processing multiple log messages from a given PLC or RTU?

Options:

To isolate PLCs or RTUs in the event of external attacks

To configure event handlers and take further action on FortiGate

To determine which type of messages from the PLC or RTU causes issues in the plant

To help OT administrators configure the network and prevent breaches

Question 17

As an OT administrator, it is important to understand how industrial protocols work in an OT network.

Which communication method is used by the Modbus protocol?

Options:

It uses OSI Layer 2 and the primary device sends data based on request from secondary device.

It uses OSI Layer 2 and both the primary/secondary devices always send data during the communication.

It uses OSI Layer 2 and both the primary/secondary devices send data based on a matching token ring.

It uses OSI Layer 2 and the secondary device sends data based on request from primary device.

Question 18

Refer to the exhibit.

Which statement is true about application control inspection?

Options:

The industrial application control inspection process is unique among application categories.

Security actions cannot be applied on the lowest level of the hierarchy.

You can control security actions only on the parent-level application signature

The parent signature takes precedence over the child application signature.

Question 19

An OT network architect must deploy a solution to protect fuel pumps in an industrial remote network. All the fuel pumps must be closely monitored from the corporate network for any temperature fluctuations.

How can the OT network architect achieve this goal?

Options:

Configure a fuel server on the remote network, and deploy a FortiSIEM with a single pattern temperature security rule on the corporate network.

Configure a fuel server on the corporate network, and deploy a FortiSIEM with a single pattern temperature performance rule on the remote network.

Configure a fuel server on the remote network, and deploy a FortiSIEM with a single pattern temperature performance rule on the corporate network.

Configure both fuel server and FortiSIEM with a single-pattern temperature performance rule on the corporate network.

Question 20

Which three criteria can a FortiGate device use to look for a matching firewall policy to process traffic? (Choose three.)

Options:

Services defined in the firewall policy.

Source defined as internet services in the firewall policy

Lowest to highest policy ID number

Destination defined as internet services in the firewall policy

Highest to lowest priority defined in the firewall policy

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Fortinet NSE7_OTS-7.2 Fortinet NSE 7 - OT Security 7.2 Exam Practice Test

Fortinet NSE 7 - OT Security 7.2 Questions and Answers

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