1z0-1109-23 Practice Exam Questions with Answers Oracle Cloud Infrastructure 2023 DevOps Professional Certification

Explanation

The correct answer is: dependency relationships between variables. In an Oracle Cloud Infrastructure (OCI) Resource Manager Schema Document, you can specify various aspects of your template, such as information about the application, permissions, logo, and pattern validations for string-type variables. However, dependency relationships between variables cannot be specified in a Schema Document. Dependency relationships between variables are typically defined in the Terraform con-figuration files themselves rather than in the Schema Document. Terraform allows you to express dependencies between resources and variables directly within the configuration using features like interpolation and variable references. The Schema Document in OCI Resource Manager primarily focuses on providing metadata and validation rules for the template inputs, but it does not include features for defining dependencies between variables.

A stack in Resource Manager is a collection of OCI resources that are created and managed as a single unit in a compartment. A stack includes a collection of Terraform files that specify the resources you want to manage with the Resource Manager, such as compute instances, networks, storage, etc. You can use a stack to apply the infrastructure-as-code model, which allows you to define, provision, and update your infrastructure using configuration files instead of manual processes. Verified References: [Stacks - Oracle Cloud Infrastructure Resource Manager], [Creating Stacks - Oracle Cloud Infrastructure Resource Manager]

The primary benefits of DevOps tools are to improve the efficiency of IT operations by automating routine tasks and eliminating manual processes, and to automate the software development lifecycle to increase production speed and consistency. DevOps tools enable collaboration between developers and operations teams, streamline workflows, reduce errors, enhance security, and enable continuous integration and delivery of software. Verified References: [DevOps - Oracle Cloud Infrastructure Developer Tools], [DevOps Tools - Oracle Cloud Infrastructure Developer Tools]

The statement that is true regarding OKE supported images and shapes for worker nodes is that to provision worker nodes from a custom image, you must use the CLI or API and specify the custom image’s OCID when creating the node pool. A custom image is an image that you create by importing an image file from your local environment or by customizing an existing OCI image. A custom image allows you to have more control over the configuration and software of your worker nodes. However, to use a custom image for your worker nodes, you cannot use the Console. You must use the CLI or API and provide the OCID (Oracle Cloud Identifier) of the custom image when creating the node pool. Verified References: [Creating Node Pools - Oracle Cloud Infrastructure Container Engine for Kubernetes], [Custom Images - Oracle Cloud Infrastructure Compute]

To rollback to version 1 of a secret that has been rotated once, you need to do the following:

• From the version 1 menu, select “Promote to Current”. This will change the status of version 1 from Previous to Current, and change the status of version 2 from Current to Previous. This means that version 1 will be used as the current key version for encrypting and decrypting secrets.
• Optionally, you can also delete version 2 if you no longer need it. From the version 2 menu, select “Delete”. This will change the status of version 2 from Previous to Deleted. You can also restore or destroy deleted versions if needed. Verified References: [Rotating Secrets - Oracle Cloud Infrastructure Vault], [Managing Secret Versions - Oracle Cloud Infrastructure Vault]

Explanation

The two recommendations to consider for developing a web app that supports users on mobile browsers and native mobile applications, and is easily upgradable, independently deployable, and resilient to failures are: Use independent services: By adopting a microservices architecture, you can break down the web app into smaller, loosely coupled services that can be developed, deployed, and upgraded independently. Each service can focus on a specific functionality or feature of the web app, allowing for easier maintenance, scalability, and resilience to failures. This approach enables you to replace or update individual services without impacting the entire web app. Avoid long duration commitment to a technology stack: By using a microservices architecture, you can avoid long-term commitments to a specific technology stack. Each microservice can be developed using the most suitable technology or programming language for its specific requirements. This flexibility allows you to leverage the latest technologies and frameworks, adapt to changing needs, and take advantage of advancements in the development ecosystem. It also reduces the risk of being locked into a technology stack that may become outdated or less effective over time. Building the web app as one monolithic unit would not provide the desired modularity, independent deployment, and upgradability. Container technology, such as Docker, can be used in conjunction with the recommended microservices architecture to provide a consistent and portable deployment mechanism, but it is not a standalone recommendation in this case.

Explanation

The two correct explanations for the difference between Ansible and Terraform are: Ansible auto-mates software installation and application deployment, while Terraform manages infrastructure as code. This highlights the primary focus of each tool. Ansible is mainly used for automating tasks related to software installation, application deployment, and configuration management. It is well-suited for managing the software stack and ensuring consistency across systems. On the other hand, Terraform specializes in infrastructure provisioning and management, allowing users to define and manage their infrastructure resources using code. Ansible focuses on infrastructure configuration, while Terraform specializes in infrastructure provisioning. This highlights the different aspects of infrastructure management that each tool addresses. Ansible is designed to handle configuration management tasks, such as setting up software, managing files, and applying configuration changes across systems. It excels at ensuring the desired state of the infrastructure. In contrast, Terraform is focused on provisioning infrastructure resources, such as virtual machines, networks, and storage. It provides a way to define and manage these resources in a declarative manner, allowing for infra-structure as code. It's worth noting that while Ansible is supported and provided by OCI as a con-figuration management tool, Terraform is a third-party tool that has gained popularity for managing infrastructure across multiple cloud providers, including OCI.

Explanation

The three statements that are true regarding setting up cluster access for an Oracle Cloud Infrastructure Container Engine for Kubernetes (OKE) cluster are: When a cluster's Kubernetes API endpoint has a public IP address, you can access the cluster in Cloud Shell by setting up a kubeconfig file. This allows you to authenticate and interact with the cluster using kubectl. Generating an API sign-ing key pair is a mandatory step when setting up cluster access using a local machine if the public key is not already uploaded in the console. This key pair is used for authentication and securing the connection to the cluster. To access the cluster using kubectl, you need to set up a Kubernetes con-figuration file (kubeconfig) for the cluster. By default, the kubeconfig file is named "config" and is stored in the $HOME/.kube directory. This file contains the necessary information and credentials to authenticate and communicate with the cluster. These steps enable the DevOps engineer to access and manage the OKE cluster, deploy new applications, and manage existing ones using kubectl or other Kubernetes management tools. Reference: https://docs.oracle.com/en-us/iaas/Content/ContEng/Tasks/contengdownloadkubeconfigfile.htm

The way that customers can rotate their master encryption keys in the OCI Vault service is by creating a new Key Version. A Key Version is an instance of a Vault managed key that has its own unique OCID and metadata. Customers can create a new Key Version for their Vault managed key at any time, which will generate a new encryption key material for that key. Customers can also specify which Key Version they want to use as the current Key Version for encrypting and decrypting secrets. Verified References: [Rotating Keys - Oracle Cloud Infrastructure Vault], [Creating Key Versions - Oracle Cloud Infrastructure Vault]

Explanation

The two situations that might be causing the problem with the build pipeline in the Oracle Cloud Infrastructure DevOps service are: They did not export a vault variable in the vaultVariables section of the build_spec.yaml file. When using vault variables in the build specification file (build_spec.yaml), it is necessary to export the vault variables in the vaultVariables section of the file. If this step is missed, the pipeline may fail due to missing or inaccessible vault variables. Their build specification file is available in a different directory of their Git repository, and there is no reference to its location. The build specification file (build_spec.yaml) should be properly referenced in the pipeline configuration. If the file is located in a different directory than the default location or if its location is not specified correctly in the pipeline configuration, the pipeline may fail to find and execute the build specification, leading to a failure. To resolve these issues, the development team should ensure that they export the required vault variables in the build specification file and correct-ly reference the location of the build specification file in the pipeline configuration.

Explanation

The correct statement is: Users can avoid downtime during deployments and automate the complexity of updating applications. The Oracle Cloud Infrastructure (OCI) DevOps service provides a set of tools and services that help automate and streamline the software development and deployment processes. One of the key benefits of OCI DevOps is the ability to avoid downtime during deployments by implementing strategies such as blue-green deployments or rolling deployments. By using OCI DevOps, users can automate the complexity of updating applications by defining CI/CD (Continuous Integration/Continuous Deployment) pipelines. These pipelines can include steps for building, testing, and deploying applications, allowing for efficient and reliable updates without disrupting the availability of the application. The other statements provided are not accurate: OCI DevOps allows users to migrate workloads from on-premises environments as well as from other cloud plat-forms. Users can store code in both public and private repositories, including internal code repositories. OCI DevOps provides visibility into the full lifecycle phases of applications, allowing users to assess performance and make informed decisions. Reference: https://docs.oracle.com/en-us/iaas/Content/devops/using/devops_overview.htm

The statements that accurately describe OCIR capabilities are:

• You can create up to 500 repositories in OCI Registry, consuming a maximum of 500 GB in total, in every enabled region of your tenancy. A repository is a collection of related Docker images that share the same name and have different tags. You can use OCI Registry to store and manage your repositories in OCI. You can also use OCI Registry quotas to monitor and control your repository usage.
• Container Registry can be used as a public docker registry, allowing any internet user with the appropriate URL knowledge to pull images from public repositories. A public repository is a repository that does not require authentication to access. You can use OCI Registry to create and manage public repositories by setting the repository visibility to public. You can also use OCI Registry policies to control who can push images to public repositories.
• Docker images and manifest lists (also known as multi-architecture images) can be stored in OCI Registry as long as they adhere to Open Container Initiative specifications. Helm charts aren’t included. A Docker image is a file that contains the executable code and dependencies for a containerized application. A manifest list is a file that contains references to multiple Docker images for different architectures or platforms. OCI Registry supports storing and managing both Docker images and manifest lists that comply with the Open Container Initiative (OCI) specifications. However, OCI Registry does not support storing and managing Helm charts, which are packages of pre-configured Kubernetes resources. Verified References: [Repositories - Oracle Cloud Infrastructure Registry], [Public Repositories - Oracle Cloud Infrastructure Registry], [Supported Image Types - Oracle Cloud Infrastructure Registry]