- A
Applying security levels (SL) to each zone based on risk
Security levels define the required robustness of controls per zone.
- B
Ensuring all industrial components have a secure development lifecycle (SDL)
IEC 62443-4-1 requires secure development processes for components.
- C
Using proprietary protocols to enhance performance
Why wrong: Proprietary protocols are discouraged due to security concerns.
- D
Conducting a risk assessment to identify security zones and conduits
Risk assessment is foundational to define zones and conduits for segmentation.
- E
Implementing a single-vendor solution to reduce complexity
Why wrong: IEC 62443 does not mandate single-vendor solutions.
Question 887 of 1,000
CRISC Information Technology and Security Practice Question
This CRISC practice question tests your understanding of information technology and security. Read the scenario carefully and evaluate each option against the stated constraints before committing to an answer. After answering, compare your reasoning against the explanation and wrong-answer breakdown below. Once you have made your selection, read the full explanation to reinforce the concept and understand why each distractor is designed to mislead on exam day.
An organization is implementing IEC 62443 for its industrial control systems. Which THREE of the following are key requirements of IEC 62443? (Select three.)
Answer choices
Why each option matters
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
Applying security levels (SL) to each zone based on risk
IEC 62443 is a comprehensive standard covering security management, system design, and component requirements. It requires risk assessment, defense-in-depth (zones and conduits), and secure development lifecycle.
Key principle: Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✓
Applying security levels (SL) to each zone based on risk
Why this is correct
Security levels define the required robustness of controls per zone.
Related concept
Read the scenario before looking for a memorised answer.
- ✓
Ensuring all industrial components have a secure development lifecycle (SDL)
Why this is correct
IEC 62443-4-1 requires secure development processes for components.
Related concept
Read the scenario before looking for a memorised answer.
- ✗
Using proprietary protocols to enhance performance
Why it's wrong here
Proprietary protocols are discouraged due to security concerns.
- ✓
Conducting a risk assessment to identify security zones and conduits
Why this is correct
Risk assessment is foundational to define zones and conduits for segmentation.
Related concept
Read the scenario before looking for a memorised answer.
- ✗
Implementing a single-vendor solution to reduce complexity
Why it's wrong here
IEC 62443 does not mandate single-vendor solutions.
Common exam traps
Common exam trap: answer the scenario, not the keyword
Many certification questions include familiar terms but test a specific constraint. Read the exact wording before choosing an answer that is generally true but wrong for this case.
Detailed technical explanation
How to think about this question
This question should be treated as a scenario, not a definition check. Identify the problem, the constraint and the best action. Then compare each option against those facts.
KKey Concepts to Remember
- Read the scenario before looking for a memorised answer.
- Find the constraint that changes the correct option.
- Eliminate answers that are true in general but not in this case.
- Use explanations to understand the rule behind the answer.
TExam Day Tips
- Underline the problem statement mentally.
- Watch for words such as best, first, most likely and least administrative effort.
- Review why wrong options are wrong, not only why the correct option is correct.
Key takeaway
Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option.
Real-world example
How this comes up in practice
A practitioner preparing for the CRISC exam encounters this exact type of scenario on the job. The correct answer here is not the most general option — it is the best answer for the specific constraint described. Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option. Real exam questions reward reading the full scenario before eliminating options, because the constraint defines which answer fits.
What to study next
Got this wrong? Here's your next step.
Identify which CRISC exam domain this question belongs to, then review the specific concept being tested. Practise related questions in that domain and focus on understanding why each wrong answer is tempting — not just why the correct answer is right.
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Information Technology and Security — study guide chapter
Learn the concepts, then practise the questions
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FAQ
Questions learners often ask
What does this CRISC question test?
Information Technology and Security — This question tests Information Technology and Security — Read the scenario before looking for a memorised answer..
What is the correct answer to this question?
The correct answer is: Applying security levels (SL) to each zone based on risk — IEC 62443 is a comprehensive standard covering security management, system design, and component requirements. It requires risk assessment, defense-in-depth (zones and conduits), and secure development lifecycle.
What should I do if I get this CRISC question wrong?
Identify which CRISC exam domain this question belongs to, then review the specific concept being tested. Practise related questions in that domain and focus on understanding why each wrong answer is tempting — not just why the correct answer is right.
What is the key concept behind this question?
Read the scenario before looking for a memorised answer.
About these practice questions
Courseiva creates original exam-style practice questions with explanations and wrong-answer analysis. It does not publish real exam questions, exam dumps, or protected exam content. Learn why practice questions differ from exam dumps →
Last reviewed: Jul 4, 2026
This CRISC practice question is part of Courseiva's free ISACA certification practice question bank. Courseiva provides original exam-style practice questions with explanations, topic-based practice, mock exams, readiness tracking, and study analytics to help learners prepare for the CRISC exam.
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