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Oracle 1z0-1084-26 Exam Syllabus Topics:

Section	Weight	Objectives
Cloud Native Fundamentals	11%	- Cloud Native Principles 1. Fundamentals of cloud native development 2. Key pillars of cloud native development - Microservices Architecture 1. Microservices architecture 2. Microservices design methodology
Testing and Securing Cloud Native Applications	13%	- Cloud Native Security 1. Manage sensitive configuration information 2. Apply security measures for cloud native development 3. Use OCI Vault to securely manage encryption keys - Cloud Native Testing 1. Testing strategies for cloud native applications 2. Cloud native testing methodologies
Monitoring and Troubleshooting Cloud Native Applications	10%	- OCI Monitoring 1. Use OCI Monitoring to view metrics - OCI Logging 1. Search and analyze logs 2. Enable and manage logs - Monitoring, Logging, and Tracing 1. Perform monitoring, logging, and tracing tasks 2. Troubleshoot cloud native applications
Leveraging Serverless Technologies for Cloud Native Development	33%	- OCI Streaming 1. Integrate systems using OCI Streaming 2. Use streaming for serverless and managed application architectures - Oracle Functions 1. Develop serverless applications with Oracle Functions - API Gateway 1. Process traffic from API clients 2. Route API traffic to backend services - OCI Events 1. Build event-driven serverless applications - OCI Queue 1. Implement asynchronous messaging for microservices
Cloud Native Applications and Containerization	33%	- Oracle Cloud Infrastructure Registry 1. Pull container images from OCIR 2. Push container images to OCIR - Docker and Containerization 1. Containerization concepts 2. Docker architecture and components - Container Orchestration 1. Deploy containerized applications on Oracle Kubernetes Engine 2. Role of container orchestration

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Oracle Cloud Infrastructure Developer Professional Sample Questions (Q169-Q174):

NEW QUESTION # 169
Which TWO statements accurately describe an Oracle Functions application? (Choose two.)

A. An application based on Oracle Functions, Oracle Cloud Infrastructure (OCI) Events, and OCI API Gateway services.
B. A Docker image containing all the functions that share the same configuration.
C. A small block of code invoked in response to an OCI Events service.A logical group of functions.
D. A common context to store configuration variables that are available to all functions in the application.
A Docker image containing all the functions that share the same configuration.

Answer: C,D

Explanation:
The correct statements are: A common context to store configuration variables that are available to all functions in the application. A Docker image containing all the functions that share the same configuration. A logical group of functions.Explanation: An Oracle Functions application provides a common context for functions within the application. It allows you to store configuration variables that are accessible by all the functions in the application. Functions within the same application can share the same Docker image, which contains the common configuration and dependencies. An Oracle Functions application serves as a logical group that organizes related functions. Functions within the same application can be managed collectively, and they can interact and share resources within the application context.

NEW QUESTION # 170
Your team has been tasked with debugging a Cloud Native application developed using the following Oracle Cloud Infrastructure (OCI) services: Object Storage, Events, Functions, API Gateway, and Autonomous Database. Which of these is NOT a valid option for troubleshooting issues in OCI? (Choose the best answer.)

A. Configure the application to send logs to the OCI Logging service.
B. Trace performance issues In the Application Performance Monitoring service by enabling Function traces.
C. View service metric information from the OCI Monitoring service.
D. Use OCI Service Connector Hub to configure a service connector to automatically send logs to the OCI Logging Analytics service.
E. Leverage OCI Cloud Guard to extract and visualize the debug logs generated by your application.

Answer: B

Explanation:
To troubleshoot issues in OCI, the option that is not valid is: Trace performance issues in the Application Performance Monitoring service by enabling Function traces. While the Application Performance Monitoring service in OCI allows you to monitor and trace the performance of your applications, it is specifically designed for monitoring OCI Functions (serverless functions) and does not directly apply to all types of applications. The other options mentioned, such as configuring logs in the OCI Logging service, leveraging OCI Cloud Guard for debug logs, viewing service metrics in the OCI Monitoring service, and using OCI Service Connector Hub for log forwarding, are valid options for troubleshooting and monitoring applications in OCI.

NEW QUESTION # 171
A service you are deploying to Oracle Cloud Infrastructure (OCI) Container Engine for Kubernetes (OKE) uses a docker image from a private repository in OCI Registry (OCIR). Which configuration is necessary to provide access to this repository from OKE?

A. Create a docker-registry secret for OCIR with API key credentials on the cluster, and specify the imagePullSecret property in the application deployment manifest.
B. Add a generic secret on the cluster containing your identity credentials. Then specify a registryCredentials property in the deployment manifest.
C. Create a docker-registry secret for OCIR with identity Auth Token on the cluster, and specify the imagePullSecret property in the application deployment manifest.
D. Create a dynamic group for nodes in the cluster, and a policy that allows the dynamic group to read repositories in the same compartment.

Answer: C

Explanation:
The necessary configuration to provide access to a private repository in OCI Registry (OCIR) from OCI Container Engine for Kubernetes (OKE) is to create a docker-registry secret for OCIR with an identity Auth Token on the cluster and specify the imagePullSecret property in the application deployment manifest. Here ' s the breakdown of the steps: Create a docker-registry secret for OCIR with an identity Auth Token: In order to authenticate with the private repository in OCIR, you need to create a secret in your OKE cluster that contains the necessary credentials. This can be done by generating an identity Auth Token from the OCI Console and creating a secret in the cluster using the kubectl command. Specify the imagePullSecret property in the application deployment manifest: In your application ' s deployment manifest (such as a Kubernetes Deployment or StatefulSet YAML file), you need to include the imagePullSecret property and specify the name of the secret you created in the previous step. This allows the OKE cluster to use the credentials from the secret to pull the docker image from the private repository in OCIR during deployment. By following these steps, you can ensure that your OKE cluster has the necessary access to the private repository in OCIR, and your application can successfully pull the required docker image during deployment.

NEW QUESTION # 172
You are designing an automated integration testing strategy for a containerized microservice deployed to an Oracle Cloud Infrastructure (OCI) Container Engine for Kubernetes (OKE) cluster. The microservice ' s integration tests must write test events to an OCI Stream within a specific compartment. To comply with security mandates, you must avoid the use of hardcoded credentials, long-lived API signing keys, or manual token injection during the automated test execution. Which TWO configurations are required to securely authorize the test suite to access the OCI Streaming service? (Choose TWO.)

A. Generate an OCI Auth Token and hardcode it in the application ' s configuration secrets.
B. Configure the test suite to run with root user privileges on the OKE worker node to bypass OCI API signature requirements.
C. Create a dynamic group that matches the OKE worker node instances using a rule such as instance.
compartment.id = ' < compartment-ocid > ' .
D. Define an IAM policy that allows the dynamic group to use the streaming resources in the target compartment.
E. Set up a security list to allow public, unauthenticated access to the streaming endpoint from the OKE subnet.

Answer: C,D

Explanation:
For OKE workloads running on managed worker nodes, OCI Instance Principals provide credential-free access to OCI APIs. Oracle documents creating a dynamic group containing the worker-node Compute instances, commonly using a matching rule based on instance.compartment.id, and then granting that dynamic group appropriate permissions through an IAM policy. Streaming permissions can authorize publishing to streams without embedding user credentials in application configuration. Hardcoded Auth Tokens violate the stated security requirement, root privileges do not bypass OCI IAM authentication, and security lists only control network traffic rather than service authorization. For modern enhanced OKE clusters, Oracle now provides Workload Identity for finer-grained pod-level authorization and recommends it where appropriate; however, among the options supplied, the documented instance-principal configuration is A and B.

NEW QUESTION # 173
You deployed a Python application to an Oracle Container Engine for Kubernetes (OKE) cluster. However, while testing you found a bug, which you rectified and then created a new Docker image. You now need to ensure that if this new image does not work once deployed, you should be able to roll back to the previous version. Using kubect1, which strategy should you use?

A. Canary Deployment
B. Blue/Green Deployment
C. A/B Testing
D. Rolling Update

Answer: D

Explanation:
A rolling update is a deployment strategy that gradually replaces the old version of an application with the new version without any downtime4. OKE supports rolling updates by using the kubectl rollout command4. A rolling update allows you to roll back to the previous version if something goes wrong with the new version4.
Therefore, using a rolling update strategy with kubectl ensures that you can roll back to the previous version of your Python application if the new image does not work once deployed.Verified References: Deploy Oracle Container Engine for Kubernetes

NEW QUESTION # 174
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