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  4. IC33 ISA-IEC 62443 Cybersecurity Risk Assessment Specialist

Free IC33 ISA-IEC 62443 Cybersecurity Risk Assessment Specialist Exam Braindumps
IC33 ISA-IEC 62443 Cybersecurity Risk Assessment Specialist Questions 36–40 (page: 9)

Updated On: 2-Sep-2026
Page 9 of 19
PDF with 90 Questions

What does impact measure in the context of consequences?

  1. The number of employees affected by an incident
  2. The ultimate loss or harm from the incident
  3. The financial profit from an incident
  4. The duration of the effect of an incident

Answer(s): B

Explanation:

In cyber risk assessment, impact describes the severity of the negative outcome caused by an incident. It measures the loss, damage, harm, or disruption resulting from a consequence.




Refer to the zone and conduit diagram.
Which would be a valid change to the zone and conduit diagram shown above?

  1. Move the Web server to the Internet.
  2. Move the data historian into a conduit.
  3. Move the safety instrumented system (SIS) into a separate zone.
  4. Move the common engineering workstation to the plant demilitarized zone.

Answer(s): C

Explanation:

In ISA/IEC 62443, a zone groups assets that share common cybersecurity requirements. A Safety Instrumented System (SIS) usually has a different risk profile and stricter protection requirements than a standard BPCS/PLC control system because it performs safety-related functions. So, placing the SIS in its own zone is a valid improvement because it allows:

● separate security requirements,
● stricter access control,
● controlled communication through conduits,
● clearer risk assessment for safety-critical assets.



What should the system under consideration (SUC) be partitioned into to help facilitate a detailed cybersecurity risk assessment?

  1. Purdue levels
  2. Zones and conduits
  3. Areas and conductors
  4. Safety and Security Components

Answer(s): B

Explanation:

In ISA/IEC 62443, the System under Consideration (SUC) is divided into zones and conduits to support detailed cybersecurity risk assessment. Zones group assets with similar security requirements, while conduits define and control communication between those zones.



Which is an important consideration for safety instrumented system (SIS) assets regarding zones and conduits?

  1. SIS assets should not have any conduits.
  2. SIS assets should be grouped with wireless systems.
  3. SIS assets should be placed in a demilitarized zone.
  4. SIS assets should be segregated from non-SIS assets.

Answer(s): D

Explanation:

Under ISA/IEC 62443, Safety Instrumented Systems (SIS) perform critical safety functions and typically require a higher level of protection than standard control systems.
When establishing zones and conduits, SIS assets should be placed in their own security zone and segregated from non-SIS assets to reduce the risk of compromise and limit the impact of cyber incidents.



What is one approach to make a SUC resilient from the beginning?

  1. Short-term fixes
  2. Defense in depth
  3. Ignoring potential threats
  4. Reducing security measures

Answer(s): B

Explanation:

Defense in depth uses multiple layers of cybersecurity controls to protect the System under Consideration (SUC) from the start. This improves resilience because the system does not depend on a single safeguard.



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