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ISA/IEC 62443 Cybersecurity Fundamentals Specialist Sample Questions:

1. 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 has no known security vulnerabilities, so firewall rules are simple to implement.
C) Modbus is a proprietary protocol that is widely supported by vendors.
D) Modbus uses explicit source and destination IP addresses and a sinqle known TCP port.

2. In which layer is the physical address assigned?
Available Choices (select all choices that are correct)

A) Layer 1
B) Layer 3
C) Layer 2
D) Layer 7

3. What is the purpose of ICS-CERT Alerts?

A) To notify the owners of critical infrastructure
B) To inform about hardware upgrades
C) To advertise cybersecurity services
D) To alert of targeted global energy sector threats

4. What is the primary focus of Part 3-2 in the ISA/IEC 62443 series?

A) Cybersecurity risk assessment and system design
B) Technical security requirements for IACS components
C) Secure product development lifecycle requirements
D) Security technologies for IACS

5. What is the primary goal of the Assess phase in the IACS Cybersecurity Lifecycle?

A) To ensure the Achieved Security Level (SL-A) meets the Target Security Level (SL-T)
B) To implement countermeasures
C) To conduct periodic audits
D) To assign a Target Security Level (SL-T)

Solutions: