Oracle Cloud Infrastructure 2025 Developer Professional Intermediate Practice Exam: Medium Difficulty 2025

Your development team is building a microservices application on OCI Container Engine for Kubernetes (OKE). The application consists of multiple services that need to communicate with each other. You want to implement service discovery and load balancing between pods without exposing services externally. Which Kubernetes service type should you use for inter-service communication?

You are deploying a containerized application to OCI Container Instances. The application requires sensitive database credentials that should not be hardcoded in the container image or visible in environment variables. What is the most secure approach to provide these credentials to your container?

Your team is using OCI DevOps to implement a CI/CD pipeline. After a successful build stage, you need to deploy artifacts to multiple OKE clusters in different regions (Phoenix and Ashburn) simultaneously, with the ability to roll back if either deployment fails. Which deployment strategy should you implement?

You are building a serverless application using OCI Functions that processes images uploaded to an Object Storage bucket. The function needs to resize images and store the results in a different bucket. The processing takes approximately 45 seconds per image. What should you consider when designing this solution?

Your microservices application uses OCI API Gateway to expose multiple backend services. You need to implement rate limiting to prevent abuse, allowing 100 requests per minute per client IP address. Additionally, you want to require API key authentication and transform the request path before forwarding to backend services. How should you configure this?

You are designing an event-driven architecture where order processing events from an e-commerce application need to be consumed by three different services: inventory management, shipping, and analytics. Each service must process every event independently, and the analytics service occasionally experiences delays but should not lose any events. Which OCI messaging service and configuration should you use?

Your application running on OKE is experiencing intermittent performance issues. You have enabled OCI Logging for your cluster and want to query logs to find all error-level messages from a specific namespace that occurred in the last hour, grouped by pod name. Which query approach should you use?

You are implementing a build pipeline in OCI DevOps that needs to build a Docker image, scan it for vulnerabilities, and only proceed to deployment if no critical vulnerabilities are found. The build artifacts should be stored securely with access controls. How should you configure this pipeline?

Your microservices application uses OCI Service Mesh to manage service-to-service communication. You need to implement a retry policy for a specific service that occasionally fails due to transient network issues. The service should retry failed requests up to 3 times with exponential backoff, but only for specific HTTP status codes (503, 504). Where should you configure this retry policy?

You are troubleshooting a performance issue in a distributed application across multiple OCI services (Functions, API Gateway, and Autonomous Database). You need to trace a request end-to-end to identify where latency is being introduced. Which OCI observability feature should you use to correlate the request across all service boundaries?