The answer is role explosion, which is the primary challenge organizations face when implementing RBAC. This occurs because as a company scales, the number of distinct roles can proliferate rapidly—often defined too granularly or for every unique permission combination—leading to massive administrative overhead, complexity in role management, and potential security gaps that undermine the principle of least privilege. On the ISC2 Certified in Cybersecurity CC exam, this concept tests your understanding of RBAC design pitfalls; a common trap is confusing role explosion with simple role hierarchy or separation of duties, but the exam emphasizes that uncontrolled role growth is the core operational risk. Remember the memory tip: “Too many roles, too many holes”—if roles multiply without careful engineering, auditability and security suffer.
ISC2 CC Access Controls Concepts Practice Question
This CC practice question tests your understanding of access controls concepts. Match the stated requirement to the specific cloud service, access model, or configuration option — many options are valid in isolation but not for this scenario. 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.
When implementing a role-based access control (RBAC) system, what is the primary challenge organizations face?
Clue words in this question
Noticing these words before you look at the options changes how you read each choice.
Clue: "primary"
Why it matters: Asks for the main purpose or function, not a secondary benefit. Eliminate answers that describe side-effects or partial functions.
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
Role explosion
Role explosion is the primary challenge in RBAC because as organizations grow, the number of distinct roles can proliferate rapidly, leading to administrative overhead, complexity in role management, and potential security gaps. This occurs when roles are defined too granularly or for every unique combination of permissions, making it difficult to maintain least privilege and audit access. Proper RBAC design requires careful role engineering to minimize the number of roles while still mapping to job functions.
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.
✗
Managing password complexity
Why it's wrong here
Password complexity is unrelated to RBAC.
✗
Ensuring users do not share passwords
Why it's wrong here
Password sharing is a general security issue, not specific to RBAC implementation.
✓
Role explosion
Why this is correct
Role explosion leads to administrative overhead and is a frequent pitfall in RBAC.
Clue confirmation
The clue word "primary" in the question point toward this answer.
Related concept
Read the scenario before looking for a memorised answer.
✗
Defining roles that align with job functions
Why it's wrong here
While challenging, role definition is not the primary issue; role explosion often occurs as a result.
Common exam traps
Common exam trap: answer the scenario, not the keyword
ISC2 often tests the misconception that the main difficulty in RBAC is defining roles themselves, when in fact the real operational challenge is controlling role proliferation (role explosion) after initial implementation.
Detailed technical explanation
How to think about this question
Under the hood, RBAC as defined in NIST SP 800-53 and ANSI INCITS 359 uses role hierarchies and constraints (e.g., separation of duties) to manage permissions efficiently. Role explosion often occurs when organizations skip role engineering and instead create a role for every unique permission set, leading to thousands of roles that violate the principle of role cardinality. In real-world scenarios, such as in AWS IAM or Azure RBAC, role explosion can cause policy evaluation delays and increase the attack surface due to misconfigured role assignments.
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.
TExam Day Tips
→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 security analyst at a medium-sized enterprise encounters this scenario during an investigation or architecture review. The correct answer reflects best practice for the specific threat or control described. Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option. Security exam questions test whether you can match controls to threats in context — not just recall definitions.
Related glossary terms
Concepts from this question explained
These glossary pages explain the core terms tested in this CC question in full detail.
Access Controls Concepts — This question tests Access Controls Concepts — Read the scenario before looking for a memorised answer..
What is the correct answer to this question?
The correct answer is: Role explosion — Role explosion is the primary challenge in RBAC because as organizations grow, the number of distinct roles can proliferate rapidly, leading to administrative overhead, complexity in role management, and potential security gaps. This occurs when roles are defined too granularly or for every unique combination of permissions, making it difficult to maintain least privilege and audit access. Proper RBAC design requires careful role engineering to minimize the number of roles while still mapping to job functions.
What should I do if I get this CC question wrong?
Identify which exam domain this question belongs to, review the core concept, then practise similar questions from the same domain.
Are there clue words in this question I should notice?
Yes — watch for: "primary". Asks for the main purpose or function, not a secondary benefit. Eliminate answers that describe side-effects or partial functions.
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 →
Share a tip, memory trick, or ask about the reasoning behind this question. Do not post real exam questions, leaked content, braindumps, or copyrighted exam material. Comments are moderated and may be removed without notice.
This CC practice question is part of Courseiva's free ISC2 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 CC exam.
Question Discussion
Share a tip, memory trick, or ask about the reasoning behind this question. Do not post real exam questions, leaked content, braindumps, or copyrighted exam material. Comments are moderated and may be removed without notice.
Sign in to join the discussion.