The correct answer is that the intern's role is explicitly denied in the policy. This is because IAM policy evaluation logic follows a fundamental rule: an explicit deny overrides any allow statement, regardless of where it appears in the policy. Even if the intern's role is listed under an allow effect for the model endpoint, the presence of a separate Deny effect targeting that same role will block all access, making the explicit deny the most likely cause of the failure. On the CompTIA AI+ AI0-001 exam, this concept tests your understanding of the "explicit deny override" principle, often appearing in troubleshooting scenarios where a user has conflicting permissions. A common trap is assuming that an allow statement alone guarantees access, but the exam expects you to recognize that a deny always wins. Remember the memory tip: "Deny is final—no appeal allowed."
AI0-001 AI Implementation and Operations Practice Question
This AI0-001 practice question tests your understanding of ai implementation and 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.
Exhibit
Refer to the exhibit.
```json
{
"model_policy": {
"model": "fraud-detection-v3",
"allowed_roles": ["data_scientist", "ml_engineer"],
"denied_roles": ["intern"],
"endpoint": "/api/v1/predict"
}
}
```
Refer to the exhibit. A team created an access policy for a fraud detection model endpoint. An intern reports being unable to access the model for testing. Reviewing the policy, what is the most likely cause?
Clue words in this question
Noticing these words before you look at the options changes how you read each choice.
Clue: "most likely"
Why it matters: Probability qualifier — the question wants the most probable cause or outcome, not a guaranteed one. Eliminate low-probability options.
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
The intern's role is explicitly denied in the policy
Option D is correct because the exhibit shows an explicit `Deny` effect for the intern's role in the policy. In AWS IAM (or similar cloud provider) access policies, an explicit deny overrides any allow, so even if the intern's role is listed in allowed roles, the explicit deny will block access. This is a fundamental principle of IAM policy evaluation logic.
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.
✗
The intern's role is not included in the allowed roles
Why it's wrong here
That alone wouldn't cause denial if not explicitly denied.
The intern's role is explicitly denied in the policy
Why this is correct
Denied roles override any allowed list.
Clue confirmation
The clue word "most likely" in the question point toward this answer.
Related concept
Read the scenario before looking for a memorised answer.
Common exam traps
Common exam trap: answer the scenario, not the keyword
CompTIA often tests the explicit deny override principle, where candidates mistakenly think that listing a role in allowed roles guarantees access, ignoring that an explicit deny in the same policy will block it.
Trap categories for this question
Command / output trap
Exhibit shows correct path.
Detailed technical explanation
How to think about this question
IAM policy evaluation follows an explicit deny override rule: if a policy contains an explicit `Deny` for a principal, action, or resource, that deny takes precedence over any `Allow`. This is documented in AWS IAM policy evaluation logic (and similar in Azure RBAC or GCP IAM). In real-world scenarios, this prevents accidental over-permissioning when a deny is placed for security reasons, such as blocking a specific role from accessing production endpoints.
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 small business has 20 workstations on the 192.168.1.0/24 network and one public IP from its ISP. The router uses PAT (NAT overload) so all 20 devices share one public address using different source ports. NAT questions test whether you understand the four address terms and which direction each translation applies.
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.
AI Implementation and Operations — This question tests AI Implementation and Operations — Read the scenario before looking for a memorised answer..
What is the correct answer to this question?
The correct answer is: The intern's role is explicitly denied in the policy — Option D is correct because the exhibit shows an explicit `Deny` effect for the intern's role in the policy. In AWS IAM (or similar cloud provider) access policies, an explicit deny overrides any allow, so even if the intern's role is listed in allowed roles, the explicit deny will block access. This is a fundamental principle of IAM policy evaluation logic.
What should I do if I get this AI0-001 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: "most likely". Probability qualifier — the question wants the most probable cause or outcome, not a guaranteed one. Eliminate low-probability options.
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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