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| Section | Weight | Objectives |
|---|---|---|
| Topic 1: Cloud Native Applications and Containerization | 33% | - Container Orchestration
|
| Topic 2: Leveraging Serverless Technologies for Cloud Native Development | 33% | - OCI Queue
|
| Topic 3: Cloud Native Fundamentals | 11% | - Microservices Architecture
|
| Topic 4: Testing and Securing Cloud Native Applications | 13% | - Cloud Native Security
|
| Topic 5: Monitoring and Troubleshooting Cloud Native Applications | 10% | - OCI Logging
|
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問題 #51
You encounter an unexpected error when invoking Oracle Functions from your Cloud Shell session named myfunction in the myapp application. Which option will get you more information on the error?
答案：C
解題說明：
The option that will get you more information on the error when invoking Oracle Functions from your Cloud Shell session is: " DEBUG=1 fn invoke myapp myfunction " . Setting the environment variable DEBUG=1 before invoking the function using the fn command allows you to enable debug mode, which provides more detailed information about the execution of the function. This can be useful for troubleshooting and understanding the root cause of the error. By using the command " DEBUG=1 fn invoke myapp myfunction "
, the function invocation will be executed with debug mode enabled, and additional debug information will be displayed in the console output. This information can include stack traces, detailed error messages, and other relevant details that can help identify and resolve the issue. Using the verbose option (--verbose) or debug option (--debug) with the fn command may also provide additional information, but the specific behavior may depend on the version and configuration of the fn CLI tool. While contacting Oracle support with the error message is always an option, enabling debug mode using the DEBUG=1 environment variable provides immediate access to more detailed information and can help in diagnosing and resolving the error more efficiently.
問題 #52
Oracle Functions monitors all deployed functions and collects and reports various metrics. Which is NOT available when viewing the Application metrics in the Oracle Cloud Infrastructure (OCI) Console?
答案：A
解題說明：
The option that is NOT available when viewing the Application metrics in the Oracle Cloud Infrastructure (OCI) Console is: " The number of retries made by the function before failing due to an error. " When viewing the Application metrics in the OCI Console for Oracle Functions, you can typically see metrics related to the performance and usage of your functions. These metrics provide insights into how your functions are performing and being utilized. The following metrics are usually available: The number of requests to invoke a function that failed due to throttling: This metric indicates the number of requests that were not processed by the function due to reaching the configured concurrency limit or throttling settings. The length of time a function runs for: This metric represents the duration of each function invocation, measuring the time it takes for the function to complete its execution. The number of requests to invoke a function that failed with an error response: This metric counts the number of requests that encountered an error during the function invocation, resulting in a failed response. However, the number of retries made by the function before failing due to an error is not typically available as part of the Application metrics in the OCI Console.
The retries made by the function are usually handled at the invoker level, and the specific details of retries may not be captured as part of the application-level metrics. It ' s important to note that the availability of metrics and their specific details may vary depending on the version and configuration of Oracle Functions and the monitoring setup. It is recommended to refer to the Oracle Functions documentation and consult the official documentation for accurate and up-to-date information on available metrics.
問題 #53
Which command is used to get a Docker image from Oracle Cloud Infrastructure Registry (OCIR) to the client machine?
答案：B
解題說明：
To pull a Docker image from OCI Registry to the client machine, you need to use the docker pull command with the following syntax1: docker pull < region-key > .ocir.io/ < tenancy-namespace > / < repo-name > : < tag > where:
* < region-key > is the key for the OCI Registry region you're using. For example, iad. See Availability by Region1.
* ocir.io is the OCI Registry name.
* < tenancy-namespace > is the auto-generated Object Storage namespace string of the tenancy that owns the repository from which you want to pull the image (as shown on the Tenancy Information page)1.
* < repo-name > is the name of the repository that contains the image you want to pull.
* < tag > is the tag of the image you want to pull.
問題 #54
You have built a custom container image for your microservice and successfully pushed it to Oracle Cloud Infrastructure Registry (OCIR). Which OCI CLI command should you run to cryptographically sign the pushed image using a master encryption key managed in OCI Vault and upload the resulting signature?
答案：D
解題說明：
Oracle explicitly documents oci artifacts container image-signature sign-upload for signing a Container Registry image and uploading its image signature. The operation requires the image OCID, compartment OCID, Vault master encryption key OCID, key-version OCID, and an approved RSA signing algorithm such as SHA_256_RSA_PKCS_PSS. Container Registry image-management commands are organized under the OCI CLI artifacts container command group, which is why the other command paths are invalid. container- engine relates to OKE rather than image-signature creation, and there is no container-registry image-signature top-level CLI group. Oracle ' s Container Registry documentation provides the exact command shown in option B for signing an already-pushed image using a key stored in OCI Vault.
問題 #55
From a DevOps process standpoint, it is a good practice to keep changes to an application under version control. Which of the following allows changes to a Docker image to be stored in a version control system?
答案：A
解題說明：
The option that allows changes to a Docker image to be stored in a version control system is: docker commit The docker commit command is used to create a new image from a container ' s changes. It takes a running container as input, captures the changes made to it, and creates a new image with those changes. This new image can then be tagged and pushed to a registry, or saved locally. By using docker commit, you can effectively capture the changes made to a container as a new image and store it in a version control system along with the Dockerfile and other project files. This allows for reproducibility and traceability of changes to the Docker image over time.
問題 #56
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