1Z0-1127-25 Deploying and Managing Generative AI on OCI Practice Question
A global enterprise is deploying a generative AI application that requires high availability across multiple OCI regions. The application must automatically fail over to a secondary region if the primary region becomes unavailable. What is the recommended architecture to achieve this?
⚠ Common exam trap
Oracle often tests the misconception that DNS-based solutions (like round-robin or simple failover) provide automatic failover with health checks, but in OCI, DNS failover requires manual intervention or additional services like Traffic Management Steering, whereas OCI Load Balancer natively supports automatic cross-region failover.
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
✓
Deploy endpoints in two regions behind an OCI Load Balancer with cross-region failover
OCI Load Balancer supports cross-region failover by distributing traffic across backend sets in multiple regions, enabling automatic failover to a secondary region when the primary region becomes unavailable. This architecture ensures high availability for generative AI applications by leveraging health checks and failover policies at the load balancer level, which is the recommended approach for multi-region active-passive setups.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✓
Deploy endpoints in two regions behind an OCI Load Balancer with cross-region failover
Why this is correct
OCI Load Balancer can route traffic to a backup region when primary is unhealthy.
- ✗
Deploy OCI Generative AI endpoints in two regions and use a global DNS round-robin
Why it's wrong here
Round-robin does not automatically fail over on failure.
- ✗
Use OCI Streaming to replicate requests between regions
Why it's wrong here
Streaming is for data ingestion, not request routing.
- ✗
Use DNS failover with a single endpoint in the primary region
Why it's wrong here
DNS TTL causes delays; no automatic failover without health checks.
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