The correct answers are the principle of least privilege and enabling multi-factor authentication (MFA) for all administrative accounts. Least privilege restricts users and roles to only the permissions essential for their job functions, which minimizes the attack surface and limits the blast radius of a compromised credential. MFA adds a vital second layer of authentication, protecting administrative accounts against credential theft, phishing, and brute-force attacks even if a password is exposed. On the CompTIA SecurityX CAS-004 exam, this question tests your understanding of foundational cloud IAM best practices within frameworks like AWS IAM, Azure AD, or GCP IAM; a common trap is selecting overly broad permissions or single-factor controls instead of these two core defenses. Remember the mnemonic “LAMP” for cloud IAM security: Least privilege, Audit, MFA, and Policy enforcement.
CAS-004 Security Operations Practice Question
This CAS-004 practice question tests your understanding of security operations. 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.
Which TWO of the following are best practices for securing a cloud-based identity and access management (IAM) system? (Select exactly 2.)
Clue words in this question
Noticing these words before you look at the options changes how you read each choice.
Clue: "best"
Why it matters: Signals that multiple options may be partially correct. Choose the option that most directly solves the exact problem described, not the one that sounds most complete.
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
Implement the principle of least privilege for all user roles.
The principle of least privilege (C) ensures that users and roles are granted only the permissions necessary to perform their job functions, reducing the attack surface and limiting potential damage from compromised accounts. Enabling multi-factor authentication (D) for administrative accounts adds a critical layer of security beyond passwords, mitigating risks from credential theft or brute-force attacks. Both are foundational controls in cloud IAM frameworks like AWS IAM, Azure AD, or GCP IAM.
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.
✗
Require users to change passwords every 30 days.
Why it's wrong here
Frequent password changes can lead to weak passwords; modern guidance recommends against arbitrary expiration.
✗
Use single sign-on (SSO) for all applications.
Why it's wrong here
SSO improves user experience but does not inherently secure IAM; it can create a single point of failure.
✓
Implement the principle of least privilege for all user roles.
Why this is correct
Limiting privileges reduces the attack surface and potential damage.
Clue confirmation
The clue word "best" in the question point toward this answer.
Related concept
Read the scenario before looking for a memorised answer.
✓
Enable multi-factor authentication (MFA) for all administrative accounts.
Why this is correct
MFA adds an extra layer of security beyond passwords.
Clue confirmation
The clue word "best" in the question point toward this answer.
Related concept
Read the scenario before looking for a memorised answer.
✗
Create default admin accounts for each department.
Why it's wrong here
Default admin accounts are a security risk; admin accounts should be unique and carefully managed.
Common exam traps
Common exam trap: answer the scenario, not the keyword
CompTIA often tests the misconception that frequent password changes (A) are a security best practice, when in fact modern standards advise against them, and that SSO (B) alone is a security control, whereas it is primarily a convenience feature that requires additional safeguards like MFA.
Detailed technical explanation
How to think about this question
In cloud IAM, the principle of least privilege is implemented through fine-grained policies (e.g., AWS IAM policies with explicit Deny effects, Azure RBAC with custom roles) and can be enforced using tools like AWS Access Analyzer or Azure Privileged Identity Management (PIM) for just-in-time access. MFA for administrative accounts is typically enforced via conditional access policies (e.g., Azure AD Conditional Access requiring MFA for 'Global Administrator' role) or IAM policies that require MFA for API calls (e.g., AWS IAM condition key 'aws:MultiFactorAuthPresent'). A real-world scenario: a compromised admin account without MFA could lead to a full cloud environment takeover, as seen in the Capital One breach, where a misconfigured firewall and lack of MFA allowed lateral movement.
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 junior network technician can log in to a core router but cannot reach the enable prompt or configuration mode. The AAA server is authenticating the login — but the authorisation policy only grants privilege level 1, not 15. Authentication (who you are) is working; authorisation (what you can do) is not.
What to study next
Got this wrong? Here's your next step.
Identify which exam domain this question belongs to, review the core concept, then practise similar questions from the same domain.
Security Operations — This question tests Security Operations — Read the scenario before looking for a memorised answer..
What is the correct answer to this question?
The correct answer is: Implement the principle of least privilege for all user roles. — The principle of least privilege (C) ensures that users and roles are granted only the permissions necessary to perform their job functions, reducing the attack surface and limiting potential damage from compromised accounts. Enabling multi-factor authentication (D) for administrative accounts adds a critical layer of security beyond passwords, mitigating risks from credential theft or brute-force attacks. Both are foundational controls in cloud IAM frameworks like AWS IAM, Azure AD, or GCP IAM.
What should I do if I get this CAS-004 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: "best". Signals that multiple options may be partially correct. Choose the option that most directly solves the exact problem described, not the one that sounds most complete.
What is the key concept behind this question?
Read the scenario before looking for a memorised answer.
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Question Discussion
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