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| Section | Weight | Objectives |
|---|---|---|
| Testing and Securing Cloud Native Applications | 13% | - Cloud Native Testing
|
| Leveraging Serverless Technologies for Cloud Native Development | 33% | - OCI Streaming
|
| Cloud Native Applications and Containerization | 33% | - Oracle Cloud Infrastructure Registry
|
| Monitoring and Troubleshooting Cloud Native Applications | 10% | - OCI Logging
|
| Cloud Native Fundamentals | 11% | - Cloud Native Principles
|
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NEW QUESTION # 67
Your team has chosen to use master encryption key (MEK) within an Oracle Cloud Infrastructure (OCI) Vault for encrypting Kubernetes secrets associated with your microservice deployments in OCI Container Engine for Kubernetes (OKE) clusters so that you can easily manage key rotation. Which of the following is NOT valid about rotating keys in the OCI Vault service?
Answer: C
Explanation:
The correct answer is: " Once rotated, older key versions can be used for encryption until they are deleted. " The statement that is NOT valid about rotating keys in the OCI Vault service is: " Once rotated, older key versions can be used for encryption until they are deleted. " In the OCI Vault service, when you rotate a master encryption key (MEK), a new key version is automatically generated. However, once a key is rotated and a new version is created, the older key versions are no longer usable for encryption. The purpose of key rotation is to ensure that the encryption keys are regularly updated and that older keys are no longer used to protect sensitive data. This enhances security by minimizing the impact of potential key compromises. The other statements mentioned are valid: Both software and hardware security module (HSM)-protected MEKs can be rotated. This provides flexibility in choosing the type of MEK and ensures that key rotation can be performed regardless of the encryption method used. Each key version is tracked internally with separate unique OCIDs (Oracle Cloud Identifiers). This allows for easy management and tracking of different key versions within the OCI Vault service. In summary, the statement that is NOT valid is the one suggesting that older key versions can still be used for encryption until they are deleted. Key rotation is designed to ensure the use of the latest key version and to retire older key versions to enhance security.
NEW QUESTION # 68
You are deploying a persistent stateful microservice to a Container Engine for Kubernetes (OKE) cluster running Kubernetes version 1.28. You configure a PersistentVolumeClaim (PVC) manifest but do not explicitly specify a value for the storageClassName property.
Which storage class will OKE initially apply by default to dynamically provision the block storage for this claim?
Answer: C
Explanation:
Oracle documents two predefined OKE Block Volume storage classes: oci-bv, which uses the CSI volume plugin, and oci, which uses the older FlexVolume plugin. For clusterscreated using Kubernetes version 1.24 or later, Oracle initially configures oci-bv as the default StorageClass. Because Kubernetes 1.28 is later than
1.24, a newly created 1.28 cluster uses oci-bv when a PVC omits storageClassName. Oracle recommends the CSI plugin and continues adding new functionality to it. An important exception applies to clusters originally created with Kubernetes 1.23 or earlier and subsequently upgraded-their original oci default can remain unchanged. Under the scenario stated, however, the initial default is oci-bv.
NEW QUESTION # 69
Your team has created a serverless application deployed in Oracle Functions. It uses a Python function leveraging the Oracle Cloud Infrastructure (OCI) Python SDK to stop any OCI compute instance that does not comply with your corporate security standards. Although there are three non-compliant OCI compute instances, when you invoke this function, none of the instances were stopped. With respect to this issue, which of the following is a valid troubleshooting strategy?
Answer: C
Explanation:
The valid troubleshooting strategy in this scenario is to enable function logging in the OCI console, add some print statements in your function code, and then view the logs to troubleshoot. Enabling function logging allows you to capture and store logs generated by your function during its execution. By adding print statements or log statements in your function code, you can output relevant information and debug messages to the logs. This helps you understand the execution flow, identify any errors or issues, and gather more information about the function ' s behavior. To troubleshoot the issue of the Python function not stopping the non-compliant OCI compute instances, you can follow these steps: Enable function logging in the OCI console: Enable logging for your function to ensure that logs are captured during its execution. Modify your function code: Add relevant print statements or log statements at key points in your code to output debug information or verify the execution flow. For example, you can print the instance details that are being evaluated for compliance. Invoke the function: Trigger the function execution either through an event or manually. View the logs: Access the function logs in the OCI console or retrieve them programmatically.
Look for the expected print statements or log entries that indicate the status of each instance and the decisions made by the function. By reviewing the logs, you can analyze the output and identify any issues or discrepancies. It can help you determine if the function is correctly evaluating the compliance criteria, retrieving the instance details, or making the necessary API calls to stop the instances. You may need to adjust your code logic or investigate further based on the information provided in the logs. Enabling function remote debugging is not a suitable strategy in this case because it is primarily used for inspecting and debugging the function code during development, rather than troubleshooting issues in a deployed function. Enabling function tracing can provide insights into the execution flow and performance of the function but may not directly address the issue of the instances not being stopped. Ensuring that the application is deployed within the same OCI compartment as the instance is not directly related to troubleshooting the issue with the non- compliant instances. It is a consideration for access and permissions but does not provide specific insights into the problem at hand. Remember to refer to the Oracle Functions documentation and consult the official resources for detailed instructions and best practices on troubleshooting and monitoring Oracle Functions.
NEW QUESTION # 70
Which design pattern is used when a microservice needs to atomically perform a database write and send a notification event using a single local transaction?
Answer: A
Explanation:
The Transactional Outbox pattern addresses the distributed-system dual-write problem by recording both the business-state change and an outgoing event within one local database transaction. Rather than attempting to atomically update a database and independently publish to a messaging platform, the service writes the event into an outbox table alongside the business update. Because both database modifications occur within the same transaction, they commit or roll back together. A separate publisher subsequently reads the outbox and sends the event to the messaging infrastructure. Oracle ' s current microservices architecture documentation explicitly identifies Transactional Outbox as the pattern for sending a message and performing a data manipulation operation within a single local transaction. Saga and CQRS address different distributed-system concerns.
NEW QUESTION # 71
Which one of the following is NOT a valid backend-type supported by Oracle Cloud Infrastructure (OCI) API Gateway?
Answer: A
Explanation:
Oracle Cloud Infrastructure (OCI) API Gateway supports various backend-types to handle incoming requests and route them to the appropriate backend service. However, " ORACLE_STREAMS_BACKEND " is not a valid backend-type in OCI API Gateway. " STOCK_RESPONSE_BACKEND " is a valid backend-type that allows you to configure static responses directly in the API Gateway without routing requests to any specific backend service. This can be useful for handling simple requests or returning predefined responses. " HTTP BACKEND " is another valid backend-type that enables routing requests to an HTTP backend service. " ORACLE_FUNCTIONS_BACKEND " is a valid backend-type that allows you to route requests to Oracle Functions, which are serverless functions that can be used to execute specific logic or operations. However, " ORACLE_STREAMS_BACKEND " is not a valid backend-type in OCI API Gateway. The API Gateway does not have native support for Oracle Streams as a backend service. Oracle Streams is a feature of Oracle Database that provides a publish-subscribe mechanism for data replication and distribution within an Oracle Database environment. It is not directly integrated as a backend service in OCI API Gateway.
NEW QUESTION # 72
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