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

Modbus uses a single master to communicate with multiple slaves using simple commands.
Modbus is a proprietary protocol that is widely supported by vendors.
Modbus uses explicit source and destination IP addresses and a single known TCP port.
Modbus has no known security vulnerabilities, so firewall rules are simple to implement.

Answer(s): C

Which of the following is the BEST example of detection-in-depth best practices?

Answer(s): B

What are the four main categories for documents in the ISA-62443 (IEC 62443) series?

Answer(s): A

What are the three main components of the ISA Secure Integrated Threat Analysis (ITA) Program?

Software development security assurance, functional security assessment, and communications robustness testing
Software robustness security testing, functional software assessment assurance, and essential security functionality assessment
Communications robustness testing, functiona1 security assurance, and software robustness communications
Communication speed, disaster recovery, and essential security functionality assessment

Answer(s): A

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