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ISA/IEC 62443 Cybersecurity Fundamentals Specialist Sample Questions:

1. What is TRUE regarding safety systems?

A) By integrating control and safety systems via Modbus TCP, cybersecurity risks are at a tolerable level.
B) Safety systems are an independent protection layer and as such have no cybersecurity vulnerabilities.
C) No dedicated malware has been found targeting safety systems specifically.
D) Even the most modern and sophisticated safety systems can be defeated by an attacker.

2. What caution is advised when using the vector approach to security levels?

A) Vector values must align with the asset owner's risk matrix and risk appetite.
B) Vector approaches eliminate the need for risk models.
C) Vector values should be ignored if they do not match industry standards.
D) Vector approaches are always more accurate than qualitative methods.

3. Which characteristic is MOST closely associated with the deployment of a demilitarized zone (DMZ)?
Available Choices (select all choices that are correct)

A) Email is prevented, thereby mitigating the risk of phishing attempts.
B) Internet access through the firewall is allowed.
C) Level 0 can only interact with Level 1 through the firewall.
D) Level 4 systems must use the DMZ to communicate with Level 3 and below.

4. In an IACS system, a typical security conduit consists of which of the following assets?

A) Wiring, routers, switches, and network management devices
B) Power lines, cabinet enclosures, and protective grounds
C) Ferrous, thickwall, and threaded conduit including raceways
D) Controllers, sensors, transmitters, and final control elements

5. What does a demilitarized zone (DMZ) provide in network security?

A) Simplified security architecture
B) Indirect access to the Internet
C) Secure data transfer
D) Increased bandwidth

Solutions: