- A
A security list
Why wrong: Security lists are for network access control, not a requirement for using custom models.
- B
A dedicated AI cluster
Required for fine-tuning and hosting custom models.
- C
Training data in Object Storage
Training data must be accessible via Object Storage.
- D
An API key
Why wrong: API key is needed for any API call but not specific to custom model usage.
- E
A serverless endpoint
Why wrong: Serverless endpoint cannot host custom models; dedicated cluster is mandatory.
Question 374 of 991
1Z0-1127 Using OCI Generative AI Service Practice Question
This 1Z0-1127 practice question tests your understanding of using oci generative ai service. The scenario asks you to isolate a root cause — eliminate options that address a different problem before choosing. 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 configurations are required to use a custom fine-tuned model on OCI Gen AI?
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
✓
A dedicated AI cluster
A dedicated AI cluster is required to host a custom fine-tuned model on OCI Generative AI because fine-tuned models are deployed on dedicated, single-tenant infrastructure that provides guaranteed compute capacity and isolation. Without a dedicated AI cluster, the model cannot be served for inference, as OCI Gen AI does not support serverless or shared endpoints for custom models.
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.
- ✗
A security list
Why it's wrong here
Security lists are for network access control, not a requirement for using custom models.
- ✓
A dedicated AI cluster
Why this is correct
Required for fine-tuning and hosting custom models.
Related concept
Read the scenario before looking for a memorised answer.
- ✓
Training data in Object Storage
Why this is correct
Training data must be accessible via Object Storage.
Related concept
Read the scenario before looking for a memorised answer.
- ✗
An API key
Why it's wrong here
API key is needed for any API call but not specific to custom model usage.
- ✗
A serverless endpoint
Why it's wrong here
Serverless endpoint cannot host custom models; dedicated cluster is mandatory.
Common exam traps
Common exam trap: answer the scenario, not the keyword
A common misconception is that a serverless endpoint can host custom fine-tuned models, but OCI Gen AI requires a dedicated AI cluster for custom model deployment, while only base models can use serverless endpoints.
Detailed technical explanation
How to think about this question
Under the hood, a dedicated AI cluster in OCI Gen AI is a set of GPU compute nodes (e.g., using NVIDIA A100 or H100) provisioned in a customer's tenancy, providing low-latency inference and data isolation. The training data stored in Object Storage is used during the fine-tuning job, but the model artifact itself is stored in the cluster's attached block storage. In a real-world scenario, if you attempt to deploy a fine-tuned model without a dedicated cluster, the API will return a 400 error indicating that the model cannot be served on a shared endpoint.
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 practitioner preparing for the 1Z0-1127 exam encounters this exact type of scenario on the job. The correct answer here is not the most general option — it is the best answer for the specific constraint described. Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option. Real exam questions reward reading the full scenario before eliminating options, because the constraint defines which answer fits.
Quick reference
Cloud Service Model Comparison
| Model | You Manage | Provider Manages | Examples |
|---|---|---|---|
| IaaS | OS, runtime, apps, data | Hardware, hypervisor, networking | EC2, Azure VMs, GCP Compute Engine |
| PaaS | Apps and data | OS, runtime, middleware, hardware | Elastic Beanstalk, Azure App Service |
| SaaS | Data and settings only | Everything else | Microsoft 365, Salesforce, Workday |
| FaaS / Serverless | Function code only | Infra, scaling, runtime | Lambda, Azure Functions, Cloud Run |
| CaaS | Containers and apps | Kubernetes, OS, hardware | EKS, AKS, GKE |
What to study next
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FAQ
Questions learners often ask
What does this 1Z0-1127 question test?
Using OCI Generative AI Service — This question tests Using OCI Generative AI Service — Read the scenario before looking for a memorised answer..
What is the correct answer to this question?
The correct answer is: A dedicated AI cluster — A dedicated AI cluster is required to host a custom fine-tuned model on OCI Generative AI because fine-tuned models are deployed on dedicated, single-tenant infrastructure that provides guaranteed compute capacity and isolation. Without a dedicated AI cluster, the model cannot be served for inference, as OCI Gen AI does not support serverless or shared endpoints for custom models.
What should I do if I get this 1Z0-1127 question wrong?
Identify which exam domain this question belongs to, review the core concept, then practise similar questions from the same domain.
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 →
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Last reviewed: Jul 4, 2026
This 1Z0-1127 practice question is part of Courseiva's free Oracle 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 1Z0-1127 exam.
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