Oracle 1Z0-1084-20 Exam Questions & Answers

Correct Answer: B

Testing using API mocks Developers are frequently tasked with writing code that integrates with other system components via APIs. Unfortunately, it might not always be desirable or even possible to actually access those systems during development. There could be security, performance or maintenance issues that make them unavailable ? or they might simply not have been developed yet. This is where mocking comes in: instead of developing code with actual external dependencies in place, a mock of those dependencies is created and used instead. Depending on your development needs this mock is made "intelligent" enough to allow you to make the calls you need and get similar results back as you would from the actual component, thus enabling development to move forward without being hindered by eventual unavailability of external systems you depend on

Correct Answer: C

Pulling Images from Registry during Deployment During the deployment of an application to a Kubernetes cluster, you'll typically want one or more images to be pulled from a Docker registry. In the application's manifest file you specify the images to pull, the registry to pull them from, and the credentials to use when pulling the images. The manifest file is commonly also referred to as a pod spec, or as a deployment.yaml file (although other filenames are allowed). If you want the application to pull images that reside in Oracle Cloud Infrastructure Registry, you have to perform two steps:

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You have to use kubectl to create a Docker registry secret. The secret contains the Oracle Cloud Infrastructure credentials to use when pulling the image. When creating secrets, Oracle strongly

recommends you use the latest version of kubectl To create a Docker registry secret: 1- If you haven't already done so, follow the steps to set up the cluster's kubeconfig configuration file and (if necessary) set the KUBECONFIG environment variable to point to the file. Note that you must set up your own kubeconfig file. You cannot access a cluster using a kubeconfig file that a different user set up. 2- In a terminal window, enter: $ kubectl create secret docker-registry --docker-server=.ocir.io --dockerusername='/' --docker-password='' --dockeremail='' where: is a name of your choice, that you will use in the manifest file to refer to the secret . For example, ocirsecret is the key for the Oracle Cloud Infrastructure Registry region you're using. For example, iad. See Availability by Region. ocir.io is the Oracle Cloud Infrastructure Registry name. is the auto-generated Object Storage namespace string of the tenancy containing the repository from which the application is to pull the image (as shown on the Tenancy Information page). For example, the namespace of the acme-dev tenancy might be ansh81vru1zp. Note that for some older tenancies, the namespace string might be the same as the tenancy name in all lower-case letters (for example, acmedev). is the username to use when pulling the image. The username must have access to the tenancy specified by . For example, [email protected] . If your tenancy is federated with Oracle Identity Cloud Service, use the format oracleidentitycloudservice/ is the auth token of the user specified by . For example, k]j64r{1sJSSF-;)K8 is an email address. An email address is required, but it doesn't matter what you specify. For example, [email protected]

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You have to specify the image to pull from Oracle Cloud Infrastructure Registry, including the repository location and the Docker registry secret to use, in the application's manifest file.

Correct Answer: C