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ISA/IEC 62443 Cybersecurity Fundamentals Specialist Sample Questions:

1. Which of the following provides the overall conceptual basis in the design of an appropriate security program?
Available Choices (select all choices that are correct)

A) Reference model
B) Reference architecture
C) Zone model
D) Asset model

2. Which layer is responsible for error checking and MAC addressing?

A) Data link
B) Application
C) Network
D) Transport

3. Electronic security, as defined in ANSI/ISA-99.00.01:2007. includes which of the following?
Available Choices (select all choices that are correct)

A) Security guidelines for the proper configuration of IACS computers and operating systems
B) Computers, networks, operating systems, applications, and other programmable configurable components of the system
C) Security guidelines for the proper configuration of IACS PLCs and other programmable configurable components of the system
D) Personnel, policies, and procedures related to the security of computers, networks. PLCs, and other programmable configurable components of the system

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

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

5. Which is a PRIMARY reason why network security is important in IACS environments?
Available Choices (select all choices that are correct)

A) PLCs use serial or Ethernet communications methods.
B) PLCs are programmed using ladder logic.
C) PLCs are inherently unreliable.
D) PLCs under cyber attack can have costly and dangerous impacts.

Solutions: