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Exam ISA-IEC-62443 All Questions
Exam ISA-IEC-62443 All Questions

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ISA Cybersecurity ISA-IEC-62443 Question # 19 Topic 3 Discussion

ISA-IEC-62443 Exam Topic 3 Question 19 Discussion:
Question #: 19
Topic #: 3

Which is the PRIMARY reason why Modbus over Ethernet is easy to manaqe in a firewall?

Available Choices (select all choices that are correct)


A.

Modbus uses a single master to communicate with multiple slaves usinq simple commands.


B.

Modbus is a proprietary protocol that is widely supported by vendors.


C.

Modbus uses explicit source and destination IP addresses and a sinqle known TCP port.


D.

Modbus has no known security vulnerabilities, so firewall rules are simple to implement.


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