1z0-1109-23 Exam Dumps - Oracle Cloud Infrastructure 2023 DevOps Professional

The statement that is true about managing cluster add-ons in OCI OKE Cluster is that when creating a new cluster, essential cluster add-ons cannot be disabled. A cluster add-on is a software component that provides additional functionality or integration for your OKE cluster. OCI OKE Cluster supports two types of cluster add-ons: essential and optional. Essential cluster add-ons are required for your cluster to function properly and cannot be disabled or customized. These include CoreDNS, Kubernetes Dashboard, Metrics Server, and WebLogic Operator. Optional cluster add-ons are not required for your cluster to function but provide additional features or benefits. These include Kiali Operator, Istio Operator, Vault Agent Injector, and Vault KMS Plugin. You can enable or disable optional cluster add-ons as per your needs. Verified References: [Cluster Add-Ons - Oracle Cloud Infrastructure Container Engine for Kubernetes], [Managing Cluster Add-Ons - Oracle Cloud Infrastructure Container Engine for Kubernetes]

To patch a server application running on 100 web servers, you can use Ansible and leverage a playbook. A playbook is a YAML file that defines the desired state of your infrastructure, such as packages, services, files, etc. You can use a playbook to specify the tasks that need to be performed on each server, such as updating the application, restarting the service, etc. You can also execute the playbook against a group of web servers, as defined in the inventory. The inventory is a file that lists the hosts and groups that Ansible can manage. By using a playbook and an inventory, you can automate the patching process and ensure consistency across all servers. Verified References: [Playbooks - Ansible Documentation], [Working with Inventory - Ansible Documentation]

The OCI service that is best suited for developing and testing isolated web applications or RESTful APIs using Node.js and MongoDB is Container Instances. Container Instances is a service that allows you to run containers without managing any servers. You can use Container Instances to create and manage single-container or multi-container deployments using Docker images. You can also use Container Instances to connect your containers to other OCI services, such as Object Storage, Database, or Networking. Container Instances is simple, quick, and secure, as it provides built-in isolation, encryption, and authentication for your containers. Verified References: [Container Instances - Oracle Cloud Infrastructure Developer Tools], [Creating Container Instances - Oracle Cloud Infrastructure Developer Tools]

Explanation

As the OKE cluster administrator, you can define permissions to restrict pod-to-pod communications except as explicitly allowed by using Network Policies. Network Policies are a Kubernetes feature that allows you to define rules for network traffic within the cluster. They provide fine-grained control over ingress (incoming) and egress (outgoing) traffic between pods. By creating Network Policies, you can specify the allowed communication paths between pods based on various criteria such as source and destination pods, namespaces, IP addresses, ports, and protocols. This allows you to enforce security and isolation within your OKE cluster, ensuring that pods can only communicate with authorized pods or services. RBAC Roles and IAM Policies are used to manage access control and permissions for managing and interacting with the cluster itself, but they do not directly control pod-to-pod communications. Security Lists, on the other hand, are associated with VCN (Virtual Cloud Network) resources and control traffic at the subnet level, not at the pod level within the OKE cluster. Reference: https://docs.oracle.com/en-us/iaas/Content/Security/Reference/oke_security.htm

Explanation

"The OCI capability that can help achieve the requirement of archiving logging data into OCI Object Storage is the ""Service Connector Hub."" The Service Connector Hub in OCI enables you to configure connections and workflows between different OCI services. In this case, you can create a connection between the OCI Logging service and OCI Object Storage using the Service Connector Hub. By setting up a connection between these services, you can define a workflow to automatically transfer the logs collected by the Logging service to Object Storage for archiving. This ensures that the logging data is securely stored and easily accessible for future analysis or compliance purposes. The Logging Query capability allows you to search and analyze logs, but it does not directly address the requirement of archiving the logging data into Object Storage. ObjectCollectionRule is not a valid OCI capability and does not pertain to the archiving of logging data into Object Storage. IAM policies are used to manage access and permissions within OCI, but they do not directly pro-vide the capability to archive logging data into Object Storage." Reference: https://docs.oracle.com/en-us/iaas/Content/service-connector-hub/archivelogs.htm

Explanation

A valid concern that needs to be further investigated in this scenario is whether the OKE cluster has a secret with credentials of the Oracle Cloud Infrastructure Registry (OCIR) repository and if that secret is being used in the Kubernetes deployment manifest. When deploying an application on OKE and pulling images from OCIR, the cluster needs to authenticate and authorize access to the OCIR repository. This is typically done by creating a Kubernetes secret that contains the credentials (authentication token or username/password) required to access the repository. The secret is then referenced in the Kubernetes deployment manifest to allow the cluster to pull the images. If the images are not getting pulled from the designated OCIR repository, it suggests that the OKE cluster might be missing the necessary secret with the OCIR credentials or the secret is not properly referenced in the deployment manifest. Further investigation should focus on ensuring the existence and correct configuration of the secret and its usage in the deployment process.

Explanation

To add approvers to the approval workflow in the Deployment Pipeline of Oracle Cloud Infrastructure (OCI) DevOps service, you can follow this approach: Add approvers to the Deployment Pipe-line and give them access via OCI IAM policy. OCI DevOps allows you to define an approval workflow as part of the Deployment Pipeline. To add approvers, you can configure the appropriate settings in the Deployment Pipeline configuration. This typically involves specifying the names or email addresses of the individuals who should review and approve the deployment. These approvers will be notified when a deployment is triggered and will be able to review and provide their approval. In order to give the approvers access to the Deployment Pipeline, you can use OCI's Identity and Access Management (IAM) service. By creating IAM policies, you can grant the necessary permissions and access control to the designated approvers, ensuring that they have the appropriate level of access to review and approve deployments. The other options mentioned are not the correct approaches: Manually adding approvers' names and email addresses in the Deployment Pipeline page: This would not provide the necessary access and permissions for the approvers to review and approve the deployment. IAM policies should be used for access control. Emailing approvers before running the Deployment Pipeline: Emailing approvers separately would not integrate with the auto-mated approval workflow in the Deployment Pipeline. The approval process should be handled within the OCI DevOps service. Adding approvers to the buildspec file: The buildspec file is primarily used for defining the build stages and actions, not for managing the approval workflow.

Explanation

The root cause for the error committed by the fresher is that the expected input/exported variable of a build is not persistent throughout multiple pipelines. This means that the value set for a variable in one pipeline is not carried over to subsequent pipelines, leading to failures in the build pipelines.

To securely store and version your application and automatically build, test, and deploy your application to OCI, you can choose the following OCI services:

• DevOps: This service enables you to automate the software development lifecycle (SDLC) and deliver software faster and more reliably. You can use DevOps to create projects, repositories, build pipelines, deployment pipelines, triggers, and artifacts.
• Oracle Cloud Infrastructure Registry: This service is a private Docker registry that allows you to store and manage your Docker images in OCI. You can use Registry to push and pull images from your local machine or from your build pipelines.
• Container Engine for Kubernetes: This service is a fully-managed platform that allows you to run your containerized applications in OCI. You can use Container Engine for Kubernetes to create and manage Kubernetes clusters, pods, services, and deployments. Verified References: [DevOps - Oracle Cloud Infrastructure Developer Tools], [Oracle Cloud Infrastructure Registry - Oracle Cloud Infrastructure Developer Tools], [Container Engine for Kubernetes - Oracle Cloud Infrastructure Developer Tools]

Explanation

The possible problem that caused the failure of the managed build stage in an Oracle Cloud Infra-structure (OCI) DevOps Build Pipeline could be that a vault secret has an incorrect OCID assigned to it. In the context of the question, the issue is related to the code repository not being accessible. This suggests that there might be a problem with the authentication or credentials used to access the code repository. One possible cause is that a vault secret, which typically stores sensitive information such as credentials or access tokens, has an incorrect OCID (Oracle Cloud Identifier) as-signed to it. If the secret's OCID is incorrect or doesn't match the expected value, it can result in authentication failures and the inability to access the code repository, leading to a pipeline failure. To resolve this issue, the administrator or developer should verify the OCID assigned to the vault secret and ensure it is correct. They should also check the code repository configuration and ensure that the correct credentials are being used to access the repository.

Explanation

The two tools that should be used for leveraging OCI DevOps service and including a Kubernetes cluster in the deployment architecture are: Ansible Collection: Ansible is an open-source automation tool that can be used for configuration management, application deployment, and orchestration. The Ansible Collection for OCI provides pre-built Ansible modules specifically designed for managing resources in Oracle Cloud Infrastructure. It enables automation of provisioning and managing OCI resources, including the setup and configuration of a Kubernetes cluster. Terraform Provider: Terraform is an infrastructure as code tool that allows you to define and provision infrastructure re-sources using declarative configuration files. The Terraform Provider for OCI enables you to define and manage OCI resources, including the creation and configuration of a Kubernetes cluster. It pro-vides a consistent and repeatable way to provision and manage infrastructure components. Chef Knife Plug-in and Compute Jenkins Plug-in are not specifically related to managing resources in OCI or deploying a Kubernetes cluster, so they are not the appropriate tools in this scenario.

Explanation

The correct statement is: You need to provision a new stack because Terraform uses immutable in-frastructure. In Oracle Cloud Infrastructure (OCI) Resource Manager, Terraform uses the concept of immutable infrastructure, which means that any changes to the infrastructure are managed through the Terraform code. In this scenario, if you want to add a CIDR block, subnet, and compute instance to your VCN, you would need to make the necessary changes to your Terraform code, create a new stack in Resource Manager, and deploy the updated code. This ensures that the infra-structure is created consistently and according to the desired state defined in the Terraform code. Simply provisioning the new resources in the OCI console and later adding them to the Terraform configuration and state would not be the recommended approach in this case.

Explanation

The WORKDIR command is used to define the working directory of a Docker container at any given time. The command is specified in the Dockerfile. Any RUN , CMD , ADD , COPY , or EN-TRYPOINT command will be executed in the specified working directory. Reference: https://www.geeksforgeeks.org/difference-between-the-copy-and-add-commands-in-a-dockerfile/

Explanation

The correct option is: A playbook could be leveraged and executed against the group of web servers, as defined in the Inventory. Then, Ansible would connect to each server and apply the same set of configurations. In Ansible, a playbook is a YAML file that describes a series of plays and tasks to be executed against a group of hosts. The inventory file defines the group of web servers that need to be patched. By leveraging a playbook, the DevOps team can define the desired configuration or patching tasks once and apply them consistently across all the web servers in the group. An-sible will connect to each server in the inventory and execute the tasks defined in the playbook, ensuring that the desired configurations or patches are applied uniformly. This approach simplifies the management of multiple servers as the same playbook can be executed against the entire group, eliminating the need to manually configure each server individually. It also allows for automation and repeatability, ensuring that the desired changes are applied consistently and efficiently.

Explanation

To move the archive log data to OCI Object Storage, you should use the following OCI features: Service Connector Hub: The Service Connector Hub allows you to create a service connector be-tween OCI Logging and OCI Object Storage. You can configure the connector to automatically export log data from the Logging service to Object Storage. IAM Policy: IAM policies are used to define permissions and access control for resources in OCI. You need to configure the appropriate IAM policies to allow the necessary permissions for the Logging service to write data to Object Storage. Compartments and Oracle Digital Assistant are not directly related to the task of moving archive log data to OCI Object Storage.

To create a secret in OCI Vault service, you need to have the following prerequisites:

• You must have a Vault managed key to encrypt the secret. A Vault managed key is a symmetric encryption key that is generated and managed by the Vault service. You can use a Vault managed key to encrypt and decrypt secrets, such as passwords, API keys, certificates, etc.
• You must have the required permissions to create and manage secrets in the Vault service. You need to have the IAM policies that allow you to access the Vault compartment, the Vault itself, and the Vault managed key. You also need to have the secret management policies that allow you to create, read, update, delete, or restore secrets. Verified References: [Creating Secrets - Oracle Cloud Infrastructure Vault], [Prerequisites for Working with Secrets - Oracle Cloud Infrastructure Vault]

Explanation

The correct answer is: The cost for each stack will be higher for a Pay As You Go subscription than for monthly flex billing. When it comes to the cost of using Terraform stacks created with Oracle Cloud Infrastructure (OCI) Resource Manager, it's important to note that Resource Manager stacks are free to use. However, you will be charged for the resources that are provisioned by these stacks. The cost of these resources will depend on factors such as the types of resources created, their con-figurations, usage duration, and the pricing model associated with your subscription. The pricing model you choose, such as Pay As You Go or monthly flex billing, will affect the cost of the re-sources provisioned by your Terraform stacks. Pay As You Go typically incurs usage-based charges, where you pay for the actual consumption of resources. Monthly flex billing, on the other hand, provides predictable costs based on fixed monthly commitments. The number of lines of text in your Terraform configuration files or the time it takes to build resources does not directly determine the cost. It's the actual usage and configuration of provisioned resources that impact the cost.

Explanation

The connection option that is NOT valid for connecting to an Oracle Autonomous Transaction Pro-cessing (ATP) Database from Oracle Container Engine for Kubernetes (OKE) is: Enable Oracle REST Data Services for the required schemas and connect via HTTPS. Enabling Oracle REST Data Services (ORDS) is not a valid method for connecting to an ATP Database from OKE. ORDS is a tool that allows you to create RESTful web services against Oracle databases. However, it is not the recommended method for establishing a connection between a containerized application in OKE and an ATP Database. The other three options mentioned are valid approaches: Creating a Kuber-netes secret with contents from the ATP instance Wallet files: This allows you to securely store and use the necessary credentials to connect to the ATP Database in your application's deployment man-ifest. Using Kubernetes secrets to configure environment variables on the container with ATP in-stance OCID and OCI API credentials: This approach allows you to set environment variables with-in your application container to provide the necessary connection details to the ATP Database. In-stalling the OCI Service Broker and deploying serviceinstance and ServiceBinding resources for ATP: The OCI Service Broker simplifies the process of provisioning and managing Oracle Cloud Infrastructure (OCI) services, including ATP, from within Kubernetes. This option allows you to create a service binding that provides the necessary connection information to your application as a volume in the deployment manifest. These options provide more direct and secure connections be-tween the containerized application in OKE and the ATP Database, ensuring proper integration and data access.

Explanation

"The option ""Hybrid Logs"" is NOT a valid log category for the Oracle Cloud Infrastructure Log-ging service. The Logging service in OCI provides the ability to collect, search, and analyze logs generated by various OCI services and resources. The valid log categories include: Service Logs: These are the logs generated by various OCI services, such as Compute, Networking, Database, and Storage services. Custom Logs: These are user-defined logs that can be sent to the Logging service using the Logging SDK or APIs. These logs can be from applications or resources running in OCI. Audit Logs: These logs capture the activity and events related to the management of OCI resources, such as API calls, user access, and policy changes. The ""Hybrid Logs"" option is not a recognized log category in the OCI Logging service." Reference: https://docs.oracle.com/en-us/iaas/Content/Logging/Concepts/loggingoverview.htm

Explanation

The correct answer is: OCI DevOps helps with deployment delays by ensuring rapid and continuous integration and delivery through CI/CD pipelines. Oracle Cloud Infrastructure (OCI) DevOps pro-vides a set of tools and services that support the implementation of DevOps practices. One of the key capabilities of OCI DevOps is enabling rapid and continuous integration and delivery through CI/CD (Continuous Integration/Continuous Delivery) pipelines. CI/CD pipelines automate the build, testing, and deployment processes, allowing developers to quickly and efficiently deliver software updates and new features. By using OCI DevOps, companies can streamline their development and deployment processes, reducing deployment delays and improving their ability to keep up with competitors. OCI DevOps provides features such as source code management, build automation, artifact management, and release automation, all of which contribute to faster and more re-liable software delivery.

Explanation

To automate infrastructure and configure Oracle Cloud Infrastructure (OCI) resources, the recom-mended tool to use is Ansible. Ansible is a popular automation tool that focuses on provisioning, configuring, and managing IT infrastructure. It uses a declarative language called YAML to de-scribe the desired state of the infrastructure, allowing you to define and automate the configuration of OCI resources such as Compute, Load Balancing, and Database services. Ansible provides a col-lection specifically designed for OCI, called the "Ansible Collection," which includes modules and playbooks for interacting with OCI APIs. By utilizing Ansible in OCI, you can easily automate the provisioning and configuration of your infrastructure, ensuring consistency and reproducibility. An-sible's simplicity and agentless architecture make it a flexible and efficient choice for managing OCI resources and automating infrastructure tasks in the context of OCI DevOps.

Explanation

The two offerings that DevOps tools can provide are: Integration between development and IT teams to achieve automation: DevOps tools facilitate collaboration and integration between development and IT operations teams. They provide a platform for automating processes, sharing information, and streamlining workflows, enabling faster and more efficient software development and deployment. Speeding up production consistency and speed by automating the Software Development Life Cycle (SDLC): DevOps tools automate various stages of the SDLC, including code compilation, testing, deployment, and monitoring. By automating these processes, DevOps tools help ensure consistency, reduce manual errors, and accelerate the release of software updates and new features. DevOps tools may also offer additional benefits such as improved security, reporting, and tracking metrics, but the primary offerings are integration and automation for faster and more efficient software delivery.

The two offerings which DevOps tool can provide are:

• Integrates between development and IT teams to achieve automation. DevOps tools enable collaboration between developers and operations teams by breaking down silos and streamlining workflows. DevOps tools also automate routine tasks and eliminate manual processes that can cause errors and delays.
• Speeds up production consistency and speed by automating SDLC. DevOps tools automate the software development lifecycle (SDLC) by enabling continuous integration and delivery (CI/CD) of software. DevOps tools also ensure consistency across different environments by using infrastructure as code (IaC) and configuration management techniques. Verified References: [DevOps - Oracle Cloud Infrastructure Developer Tools], [DevOps Tools - Oracle Cloud Infrastructure Developer Tools]

Explanation

The correct answer is: From the version menu, select "Promote to current." To rollback to a previous version in OCI Secret Management within a Vault, the administrator should select the desired version from the version menu and choose the option "Promote to current." In this scenario, the administrator wants to rollback to version 1, so they would select version 1 from the menu and promote it to the current version. This action will make version 1 the active and current version of the secret, replacing version 2. The "Promote to current" option allows administrators to switch between different versions of a secret and make a specific version the active one.

The capabilities that can help ensure the security and reliability of the code in the build and deployment pipelines are:

• Using third-party tools like Sonatype, SonarQube, or OverOps to analyze code for security defects or bugs in code quality. These tools are examples of code analysis tools that can help you identify and fix vulnerabilities, code smells, bugs, performance issues, and technical debt in your code. You can integrate these tools with your build and deployment pipelines using OCI DevOps services such as Code Repository, Build Pipeline, and Deployment Pipeline.
• Using version control tools like Git or SVN to track and manage changes in the code-base. These tools are examples of version control systems that can help you store, update, and collaborate on your code files. You can use these tools to create branches, merge changes, resolve conflicts, and revert to previous versions of your code. You can also use these tools with your build and deployment pipelines using OCI DevOps services such as Code Repository, Build Pipeline, and Deployment Pipeline. Verified References: [Code Analysis Tools - Oracle Cloud Infrastructure DevOps], [Version Control Systems - Oracle Cloud Infrastructure DevOps]

One of the ways that OCI DevOps deployment pipelines reduce risk and complexity of production applications is by reducing change-driven errors introduced by manual deployments. A deployment pipeline is a sequence of stages that automates the delivery of software from source code to production. By using a deployment pipeline, you can eliminate human errors, enforce quality checks, and ensure consistency across different environments. A deployment pipeline also enables faster feedback loops, easier rollback, and improved traceability of changes. Verified References: [Deployment Pipelines - Oracle Cloud Infrastructure DevOps], [Creating Deployment Pipelines - Oracle Cloud Infrastructure DevOps]

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.