Application Deployment And Lifecycle

What is the primary difference between a Deployment and a DeploymentConfig in OpenShift?

You have a build that fails because it requires access to a private repository. What is the correct way to provide credentials to the build?

You need to update an application without downtime. Which deployment strategy is most appropriate?

An administrator needs to roll back a Deployment in OpenShift to a specific previous revision because the latest update introduced a critical database connection bug. Which command identifies the available revisions and their associated change causes before executing the rollback?

An administrator needs to perform a canary deployment strategy using standard OpenShift Deployment resources (not DeploymentConfigs). What is the standard Kubernetes/OpenShift native mechanism to route a small percentage of traffic to the canary deployment?

An ImageStream named 'frontend' in a project contains multiple tags, including 'latest' and 'v1.0'. You want to update an existing Deployment to specifically use the 'v1.0' tag of this ImageStream. Where must this reference be updated in the Deployment specification?

You need to ensure that your application deployment always maintains at least 80% of its desired pod count during a rolling update. Which strategy parameter should you configure?

An administrator needs to completely remove a Helm release named my-redis from the cluster, including its history. Which Helm command should be executed?

A developer has deployed a Helm chart in OpenShift and needs to list all currently installed Helm releases in the current namespace. Which command should be used?

You notice that your builds are failing due to a lack of memory. Where can you set resource limits for the build process?

A developer has created a Kustomization file that applies a namespace prefix and some patches to base Kubernetes manifests. How can the developer apply these manifests to an OpenShift cluster using standard oc tooling without installing standalone Kustomize?

Which THREE methods can be used to pass parameters or configuration values into a Helm chart installation in OpenShift? (Choose three.)

An administrator needs to view the rollout history of a DeploymentConfig named web-frontend. Which command accomplishes this?

An administrator needs to deploy a containerized web application using a Git repository as the source without writing a Dockerfile. Which OpenShift build strategy should be used?

When managing application lifecycles and rollouts using standard Kubernetes Deployments in OpenShift 4.14, which TWO parameters are explicitly configurable under the rollingUpdate strategy settings? (Choose two.)

A DeploymentConfig in OpenShift has a Rolling strategy defined. Which parameter in the strategy configuration controls the maximum number of pods that can be created above the desired replica count during the update?

An OpenShift cluster administrator needs to ensure that custom S2I builder images stored in an insecure internal registry can be successfully pulled by build pods without failing TLS verification. Where must the insecure registry be defined?

An administrator needs to deploy a Helm chart into an OpenShift cluster while overriding specific chart values using a local YAML file. Which Helm CLI command should be executed?

An OpenShift administrator needs to trigger a rollback of a Deployment to its previous working revision after a failed update. Which oc command should be used?

An administrator wants to pause rollouts on a DeploymentConfig named backend-api to make multiple configuration changes without triggering intermediate builds or rollouts. Which command pauses the rollout?

Which TWO commands are typically used to check the status of an application rollout?

An administrator needs to configure a Deployment strategy in OpenShift. Which THREE deployment strategy types are natively supported by standard Kubernetes/OpenShift Deployments? (Choose three.)

You need to deploy a Node.js application from a Git repository using Source-to-Image (S2I) on OpenShift 4.14, and you want to ensure the build triggers automatically whenever a new image is pushed to the dependent base ImageStream. Which BuildConfig strategy and configuration element achieves this?

How do you view the history of deployments for a DeploymentConfig?

Which resource in OpenShift acts as an abstraction over a set of images to provide a stable reference?

You want to prevent a specific pod from being scheduled on nodes that are already running other pods of the same application. What should you configure?

Which THREE of the following mechanisms can be used to automatically trigger a new build in an OpenShift BuildConfig? (Choose three.)

You have a S2I build that fails because the builder image is not accessible by the restricted ServiceAccount. What is the most secure way to resolve this?

Which TWO deployment triggers are supported by a DeploymentConfig?

When configuring a custom build strategy, where do you define the Dockerfile to use?

Which THREE items are contained within a Helm Chart structure?

A production Deployment using the Rolling update strategy is failing its readiness probe during a rollout, causing the update to block and eventually time out. You need to inspect the reason for the rollout failure using the OpenShift CLI without deleting the failing pods immediately. Which oc command provides the most direct diagnostic information regarding the rollout status and blockage reason?

Which THREE of the following are valid build strategies supported by OpenShift BuildConfigs? (Choose three.)

Which command-line argument can you use to change the output format of 'oc get' to YAML?

Which command allows you to view the logs of a specific build?

You are using Kustomize to manage environment-specific configurations. Which file must be present in the base directory to define resources?

Which THREE pieces of data can an ImageStream reference?

An administrator is troubleshooting a failed OpenShift build. Which THREE resources or logs should the administrator check to diagnose the failure? (Choose three.)

When managing ImageStreams in OpenShift, which TWO tasks can an administrator perform using oc commands? (Choose two.)

You have a Helm chart that requires custom values for different environments. Which flag allows you to pass a custom values file?

You need to perform a canary deployment by shifting traffic between two versions of your app. What is the standard way to accomplish this in OpenShift without using a Service Mesh?

An administrator needs to create a new OpenShift build using a BuildConfig. Which TWO build strategies are natively supported out-of-the-box by OpenShift? (Choose two.)

Which THREE things can you configure in a BuildConfig?

An administrator needs to configure a BuildConfig so that whenever a new image is pushed to a dependent ImageStream tag, a new build is automatically triggered. Which trigger type must be added to the BuildConfig?

You want to trigger a new build automatically whenever the base image in an ImageStream changes. What must be enabled in the BuildConfig?

What is the purpose of the 'postCommit' hook in a BuildConfig?

Which TWO of the following are valid ways to trigger a build in OpenShift?

An administrator is configuring a DeploymentConfig in OpenShift and wants to set up automated triggers for new rollouts. Which TWO trigger types are natively supported in a DeploymentConfig spec? (Choose two.)

Which THREE actions can be performed using the oc rollout subcommand in OpenShift? (Choose three.)

Which OpenShift resource defines the desired state of a containerized application, including replica count and image version?

Which THREE components are part of a Kustomize configuration?

A BuildConfig uses an S2I strategy and needs to pull private base images from a secured external container registry. Where must the administrator configure the pull credentials so the builder pod can authenticate?

Which command is used to start a new build from an existing BuildConfig named 'frontend'?

A developer is using Kustomize to manage environment overlays (dev and prod) for an OpenShift application. Where should the common base resources be referenced in the prod/kustomization.yaml file?

During an S2I build, an administrator needs to pass sensitive build arguments, such as subscription keys, without hardcoding them into the BuildConfig or exposing them in the final image history. How should this be handled?

You are troubleshooting a BuildConfig that fails during the source clone phase due to an untrusted custom internal Certificate Authority (CA) used by your corporate Git server. Where must you configure the custom CA certificate so that the OpenShift cluster's build pods trust the Git server during S2I builds?

A developer wants to inspect the generated Kubernetes manifests from a Helm chart without actually installing the chart into the OpenShift cluster. Which Helm command should be used?

Which TWO of the following are valid deployment strategies supported by OpenShift?

How do you define a health check that verifies if your application is ready to start receiving traffic?

Which TWO pieces of information are needed when defining a new Helm repository?

Which TWO of the following can be used to troubleshoot a failing deployment?

Which TWO statements are true regarding Kustomize usage within OpenShift? (Choose two.)

A developer wants to track multiple versions and tags of container images within an OpenShift cluster efficiently. Which OpenShift resource provides this capability?

When creating a build using S2I, what does the 'assemble' script do?

When performing a 'rollout undo' on a Deployment, what is the default behavior if no revision is specified?

Which tool would you use to package an application including its dependencies and configuration for easy distribution in OpenShift?

Which THREE items are required to successfully deploy a basic application using S2I?

You have modified a set of Kubernetes manifests using Kustomize and want to preview the exact output that will be applied to your OpenShift cluster without actually executing the changes. Which command should you run?

You want to automate the application lifecycle so that every time a code change is pushed, the build and deployment occur automatically. Which combination of features should you use?

What is the result of using a 'Recreate' strategy during a deployment?