- A
Allow group DataScience to use generative-ai-family in compartment genai-compartment and allow group DataScience to use dedicated-ai-clusters in compartment genai-compartment
Why wrong: This allows use of dedicated-ai-clusters, not restricting it. Also, 'use' on clusters would allow creating them.
- B
Allow group DataScience to use generative-ai-family in compartment genai-compartment where request.permission != 'MANAGE_DEDICATED_AI_CLUSTER'
Why wrong: OCI IAM does not support conditional operators like != for request.permission in this manner; such a policy is invalid.
- C
Allow group DataScience to use generative-ai-family in compartment genai-compartment and allow group DataScience to inspect dedicated-ai-clusters in compartment genai-compartment
'use' on generative-ai-family allows all GenAI operations except cluster management; 'inspect' on dedicated-ai-clusters allows listing but not creating or managing clusters.
- D
Allow group DataScience to use generative-ai-family in compartment genai-compartment and deny group DataScience to manage dedicated-ai-clusters in compartment genai-compartment
Why wrong: Deny policies are not supported in OCI IAM; only allow policies exist. You cannot explicitly deny.
1Z0-1127 OCI Generative AI Service Practice Question
This 1Z0-1127 practice question tests your understanding of oci generative ai service. 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 engineer needs to allow the DataScience group to use OCI Generative AI resources (Chat, Embedding, and Summarisation) in the compartment 'genai-compartment', but not allow them to create dedicated AI clusters. Which IAM policy statement achieves this?
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
Allow group DataScience to use generative-ai-family in compartment genai-compartment and allow group DataScience to inspect dedicated-ai-clusters in compartment genai-compartment
The 'inspect' verb on dedicated-ai-clusters prevents creating or managing clusters while allowing use of other GenAI resources. 'use' on generative-ai-family allows using the resources. Option A denies all GenAI resources, B grants full access including clusters, C uses incorrect resource type.
Key principle: ACLs process entries top to bottom and stop at the first match. Entry order and interface direction matter as much as the permit or deny statement.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
Allow group DataScience to use generative-ai-family in compartment genai-compartment and allow group DataScience to use dedicated-ai-clusters in compartment genai-compartment
Why it's wrong here
This allows use of dedicated-ai-clusters, not restricting it. Also, 'use' on clusters would allow creating them.
- ✗
Allow group DataScience to use generative-ai-family in compartment genai-compartment where request.permission != 'MANAGE_DEDICATED_AI_CLUSTER'
Why it's wrong here
OCI IAM does not support conditional operators like != for request.permission in this manner; such a policy is invalid.
- ✓
Allow group DataScience to use generative-ai-family in compartment genai-compartment and allow group DataScience to inspect dedicated-ai-clusters in compartment genai-compartment
Why this is correct
'use' on generative-ai-family allows all GenAI operations except cluster management; 'inspect' on dedicated-ai-clusters allows listing but not creating or managing clusters.
Related concept
Standard ACLs match source addresses.
- ✗
Allow group DataScience to use generative-ai-family in compartment genai-compartment and deny group DataScience to manage dedicated-ai-clusters in compartment genai-compartment
Why it's wrong here
Deny policies are not supported in OCI IAM; only allow policies exist. You cannot explicitly deny.
Common exam traps
Common exam trap: ACLs stop at the first match
ACLs are processed top to bottom. The first matching entry wins, and an implicit deny usually exists at the end.
Detailed technical explanation
How to think about this question
ACL questions test precision: source, destination, protocol, port and direction. A generally correct ACL can still fail if it is applied on the wrong interface or in the wrong direction.
KKey Concepts to Remember
- Standard ACLs match source addresses.
- Extended ACLs can match source, destination, protocol and ports.
- The first matching ACL entry is used.
- There is usually an implicit deny at the end.
TExam Day Tips
- Check inbound versus outbound direction.
- Read the ACL from top to bottom.
- Look for a broader permit or deny above the intended line.
Key takeaway
ACLs process entries top to bottom and stop at the first match. Entry order and interface direction matter as much as the permit or deny statement.
Real-world example
How this comes up in practice
A security administrator must allow nursing staff to reach a patient records server while blocking access from the guest Wi-Fi VLAN. After applying an extended ACL, traffic is still blocked from nursing workstations. The ACL was applied outbound instead of inbound on the wrong interface. Questions like this test ACL direction and placement rules.
What to study next
Got this wrong? Here's your next step.
Review ACL processing order, placement rules (standard near destination, extended near source), and inbound vs outbound direction. Study wildcard masks and implicit deny. Then practise related 1Z0-1127 ACL questions on filtering logic and placement.
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FAQ
Questions learners often ask
What does this 1Z0-1127 question test?
OCI Generative AI Service — This question tests OCI Generative AI Service — Standard ACLs match source addresses..
What is the correct answer to this question?
The correct answer is: Allow group DataScience to use generative-ai-family in compartment genai-compartment and allow group DataScience to inspect dedicated-ai-clusters in compartment genai-compartment — The 'inspect' verb on dedicated-ai-clusters prevents creating or managing clusters while allowing use of other GenAI resources. 'use' on generative-ai-family allows using the resources. Option A denies all GenAI resources, B grants full access including clusters, C uses incorrect resource type.
What should I do if I get this 1Z0-1127 question wrong?
Review ACL processing order, placement rules (standard near destination, extended near source), and inbound vs outbound direction. Study wildcard masks and implicit deny. Then practise related 1Z0-1127 ACL questions on filtering logic and placement.
What is the key concept behind this question?
Standard ACLs match source addresses.
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Last reviewed: Jul 4, 2026
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