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| Section | Weight | Objectives |
|---|---|---|
| Testing and Securing Cloud Native Applications | 13% | - Secrets management with OCI Vault - Application security best practices - Testing strategies and secure deployment configurations |
| Leveraging Serverless Technologies for Cloud Native Development | 33% | - API-driven architectures using API Gateway - Oracle Functions development and management - Event-driven architecture with OCI Events, Streaming, and Queue |
| Cloud Native Fundamentals | 11% | - OCI developer services and tools overview - Cloud-native principles and microservices architecture - DevOps concepts and CI/CD workflows |
| Cloud Native Applications and Containerization | 33% | - Deployment and management with Oracle Kubernetes Engine (OKE) - Oracle Container Registry (OCIR) usage - Building containerized applications with Docker |
| Monitoring & Troubleshooting Cloud Native Applications | 10% | - Application performance monitoring and tracing - Troubleshooting containerized and serverless workloads - Centralized logging and metrics collection |
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NEW QUESTION # 86
You are a developing a microservices application that will be a consumer of the Oracle Cloud Infrastructure (OCI) Streaming service. Which API method should you use to read and process a stream?
Answer: C
Explanation:
The correct API method to read and process a stream in the Oracle Cloud Infrastructure (OCI) Streaming service is " GetMessages " . When consuming messages from a stream in OCI Streaming, you use the " GetMessages " API method. This method allows you to retrieve a batch of messages from the stream for processing. You can specify parameters such as the number of messages to retrieve, the maximum size of the messages, and the timeout for the request. By using the " GetMessages " API method, you can retrieve messages from the stream and then process them in your microservices application. This allows you to consume and handle the data in real-time as it becomes available in the stream. The " GetMessages " method provides flexibility in how you consume and process the messages, enabling you to implement custom logic and workflows based on your specific application requirements.
NEW QUESTION # 87
A Docker image consists of one or more layers, each of which represents a Dockerfile instruction. The layers are stacked and each one is a delta of the changes from the previous layer. What permission is associated with these layers?
Answer: B
Explanation:
The correct answer is: " read only. " The layers of a Docker image are read-only. Once a layer is created, it cannot be modified. Each layer represents a Dockerfile instruction, and it is stacked on top of the previous layer, forming a stack of immutable layers. These layers are designed to be read-only to ensure consistency and integrity of the image. When a Docker image is built, each instruction in the Dockerfile creates a new layer. Each layer represents the changes made by that instruction relative to the previous layer. The layers are stacked on top of each other to form the complete image. This layer-based approach allows for efficient storage and distribution of Docker images. Because the layers are read-only, any changes or modifications to the image result in the creation of new layers rather than modifying the existing ones. This immutability ensures that each layer remains intact and preserves the integrity of the image. It also enables Docker ' s caching mechanism, where previously built layers can be reused if the corresponding instructions haven ' t changed, speeding up the image build process. The other options mentioned, such as " write only, " " write once, " " movable, " and " read mostly, " do not accurately describe the permission associated with Docker image layers. Docker image layers are specifically designed to be read-only.
NEW QUESTION # 88
You are configuring a route on an Oracle Cloud Infrastructure API Gateway to an HTTP backend service that takes up to four minutes to execute long-running analytical queries. Which timeout configuration should you apply in the API deployment specification to safely prevent a gateway timeout?
Answer: D
Explanation:
For an HTTP backend, OCI API Gateway provides readTimeoutInSeconds to control how long the gateway waits for the backend response after the connection has been established. A four-minute backend processing window requires a timeout of 240 seconds, so B is sufficient without exceeding the platform limit. Oracle documents a maximum configurable timeout value of300 secondsfor HTTP backend timeout parameters.
Therefore, the 360-second and 480-second choices exceed the supported range and would not be valid deployment values. A 120-second timeout would expire before the four-minute analytical operation can complete. Thus, 240 seconds is both within the API Gateway limit and aligned with the backend ' s maximum execution duration.
NEW QUESTION # 89
To effectively test your cloud native applications for " unknown unknowns " , you need to employ various testing and deployment strategies. Which strategy involves exposing new functionality or features to only a small set of users?
Answer: C
Explanation:
The strategy that involves exposing new functionality or features to only a small set of users is called Canary Deployment. Canary deployment is a technique used in software development and deployment where a new version of an application or feature is released to a small subset of users or a specific group of servers. This allows for testing and gathering feedback on the new functionality in a controlled and limited environment before making it available to a wider audience. In a canary deployment, a small portion of the traffic is routed to the new version while the majority of the traffic still goes to the stable version. This allows for monitoring and evaluation of the new functionality in real-world conditions while minimizing the impact of any potential issues or bugs. If the new version performs well and meets the desired criteria, it can then be gradually rolled out to a larger user base or all servers. By exposing the new functionality or features to a small set of users initially, canary deployment helps in identifying any unforeseen issues, gathering feedback, and ensuring the stability and reliability of the application before a full deployment.
NEW QUESTION # 90
You are tasked with developing an application that requires the use of Oracle Cloud Infrastructure (OCI) APIs to POST messages to a stream in the OCI Streaming service. Which statement is incorrect? (Choose the best answer.)
Answer: C
Explanation:
The statement that is incorrect is: " The request does not require an Authorization header. " In order to POST messages to a stream in the OCI Streaming service using OCI APIs, the request does require an Authorization header. The Authorization header is used to provide authentication and ensure the request is authorized to access the stream. The correct approach is to include the Authorization header in the request, along with other required headers such as x-content-sha256, content-type, and content-length. Therefore, the incorrect statement is that the request does not require an Authorization header.\
NEW QUESTION # 91
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