ISA/IEC 62443 Cybersecurity Fundamentals Specialist ISA-IEC-62443 Question # 22 Topic 3 Discussion

ISA/IEC 62443 Cybersecurity Fundamentals Specialist ISA-IEC-62443 Question # 22 Topic 3 Discussion

ISA-IEC-62443 Exam Topic 3 Question 22 Discussion:
Question #: 22
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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