1Z0-1127-25 Deploying and Managing Generative AI on OCI Practice Question
A company is deploying a generative AI service on OCI using the OCI Data Science service with a large language model (LLM) in a VCN. The model inference endpoint must be accessible only from a private subnet within the same VCN. Which networking component should be configured to enable this?
⚠ Common exam trap
Many candidates confuse a Service Gateway with a NAT Gateway, assuming both provide outbound-only access, but the Service Gateway is specifically designed for private access to OCI services, not general internet egress.
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
✓
Service Gateway
A Service Gateway enables private subnet resources to access OCI services (including the OCI Data Science model deployment endpoint) without traversing the internet. Since the inference endpoint must be accessible only from a private subnet within the same VCN, the Service Gateway provides the necessary private connectivity by routing traffic over the OCI network fabric, not through a NAT or internet gateway.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
NAT Gateway
Why it's wrong here
NAT gateway is for outbound internet access from private subnets.
- ✗
Dynamic Routing Gateway (DRG)
Why it's wrong here
DRG is used for connecting VCNs or on-premises networks, not for accessing OCI services.
- ✗
Internet Gateway
Why it's wrong here
Internet gateway would expose the endpoint to the internet.
- ✓
Service Gateway
Why this is correct
Service gateway enables private subnet access to OCI services like Data Science.
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JA
Written by Johnson Ajibi, MSc IT Security
Senior Network & Security Engineer · founder of Courseiva
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