This CC practice question tests your understanding of security principles. 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.
A security analyst is reviewing logs and finds that a user accessed files outside of their department. The user claims it was necessary for a project. Which principle should the analyst use to assess whether this was appropriate?
Need to know
Correct. Access should be based on necessity for the task.
Accountability
Why wrong: Accountability is about logging, not authorization assessment.
Separation of duties
Why wrong: Separation of duties is about task division.
Least privilege
Why wrong: Least privilege is about general access levels, not specific information.
Answer choices
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
Need to know
The 'need to know' principle restricts access to information based on the specific requirements of a user's role or project. In this scenario, the analyst must verify if the user's project actually required access to those specific files, not just if the user had the technical ability to access them. This principle is a subset of least privilege, focusing on data access rather than system permissions.
Key principle: Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option.
Answer analysis
For each option: why learners choose it and why it is or isn't the right answer here.
Need to know
Why this is correct
Correct. Access should be based on necessity for the task.
Related concept
Read the scenario before looking for a memorised answer.
Accountability
Why it's wrong here
Accountability is about logging, not authorization assessment.
Separation of duties
Why it's wrong here
Separation of duties is about task division.
Least privilege
Why it's wrong here
Least privilege is about general access levels, not specific information.
Common exam traps
ISC2 often tests the distinction between 'least privilege' (permissions assigned to a role) and 'need to know' (justification for accessing specific data at a specific time), causing candidates to pick 'least privilege' when the scenario involves a user who already has the permission but needs to justify the access.
Detailed technical explanation
Under the hood, 'need to know' is often enforced via attribute-based access control (ABAC) policies that evaluate dynamic attributes like project ID, data classification, and user clearance at the time of access. For example, in a Microsoft Active Directory environment, a user might have read access to a shared folder via group membership, but a 'need to know' check would require a separate authorization step, such as a temporary access ticket or a signed approval workflow. In real-world scenarios, this prevents lateral movement in a breach, where an attacker with valid credentials could access sensitive data not required for their role.
Key takeaway
Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option.
Real-world example
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.
What to study next
Identify which exam domain this question belongs to, review the core concept, then practise similar questions from the same domain.
Security Principles — study guide chapter
Learn the concepts, then practise the questions
Security Principles practice questions
Targeted practice on this topic area only
All CC questions
500 questions across all exam domains
ISC2 Certified in Cybersecurity CC study guide
Full concept coverage aligned to exam objectives
CC practice test guide
How to use practice tests most effectively before exam day
Related practice questions
Use these pages to review the topic behind this question. This is how one missed question becomes focused revision.
Practise CC questions linked to Access Controls Concepts.
Practise CC questions linked to Business Continuity, DR & Incident Response.
Practise CC questions linked to Security Principles.
Practise CC questions linked to Network Security.
Practise CC questions linked to Security Operations.
Practise CC questions linked to CC fundamentals.
Practise CC questions linked to CC scenario.
Practise CC questions linked to CC troubleshooting.
Practice this exam
Short sessions build daily habit. Longer sessions build exam-day stamina. Try a timed session to simulate real conditions.
FAQ
Security Principles — This question tests Security Principles — Read the scenario before looking for a memorised answer..
The correct answer is: Need to know — The 'need to know' principle restricts access to information based on the specific requirements of a user's role or project. In this scenario, the analyst must verify if the user's project actually required access to those specific files, not just if the user had the technical ability to access them. This principle is a subset of least privilege, focusing on data access rather than system permissions.
Identify which exam domain this question belongs to, review the core concept, then practise similar questions from the same domain.
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: Jun 30, 2026
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.