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ISA/IEC 62443 Cybersecurity Fundamentals Specialist Sample Questions:

1. What does Layer 1 of the ISO/OSI protocol stack provide?
Available Choices (select all choices that are correct)

A) Data encryption, routing, and end-to-end connectivity
B) Framing, converting electrical signals to data, and error checking
C) User applications specific to network applications such as reading data registers in a PLC
D) The electrical and physical specifications of the data connection

2. Which is the implementation of PROFIBUS over Ethernet for non-safety-related communications?
Available Choices (select all choices that are correct)

A) PROFIBUS DP
B) PROF1SAFE
C) PROFIBUS PA
D) PROFINET

3. In what step of the development process of the CSMS is "Establish purpose, organizational support, resources, and scope" taken care of?

A) Establish policy, organization, and awareness.
B) Create reference architecture.
C) Conduct an initial/high-level risk assessment.
D) Initiate the CSMS program.

4. If an asset owner wants to demonstrate compliance with ISA/IEC 62443-2-1 requirements during an external audit, which type of evidence would be MOST appropriate?

A) Marketing materials describing the company's commitment to security
B) Financial investment records in cybersecurity tools only
C) Anecdotal reports from employees about security practices
D) Documentation verifying use and configuration of technologies

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

Solutions: