EX280 Practice Test 19 — 15 Questions

Question 1

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.)

Accepted Answer

Rolling (for DeploymentConfigs) / RollingUpdate (for Deployments). Standard Kubernetes Deployments support RollingUpdate. OpenShift-specific DeploymentConfigs support Rolling, Recreate, and Custom strategies. Standard Deployments specifically use RollingUpdate natively. Recreate is also supported by standard Deployments. (Note: Standard Deployments support Recreate and RollingUpdate strategies under .spec.strategy.type).

Answer

BlueGreen

Answer

Canvas

Question 2

An administrator wants to verify if the OpenShift cluster upgrade to version 4.14 has successfully completed for all core components. Which status field in the ClusterVersion resource should show 'True' for the progressing and available conditions?

Accepted Answer

Available=True and Progressing=False. During a successful cluster upgrade, the 'Available' condition is True and the 'Progressing' condition becomes False once completed.

Answer

Completed=True and Ready=True

Answer

Available=False and Progressing=True

Answer

Upgraded=True and Finished=True

Question 3

Which TWO commands can an administrator use to check the overall status or health of core OpenShift 4.14 cluster operators? (Choose TWO)

Accepted Answer

oc get clusteroperators. Administrators use 'oc get clusteroperators' and 'oc get clusterversion' to check core cluster operator health and upgrade status.

Answer

oc get machinesets

Answer

oc get machineconfigpools

Answer

oc get csv --all-namespaces

Question 4

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

Accepted Answer

Kustomize is natively integrated into the oc command line tool using the -k flag.. Kustomize is integrated directly into the oc command-line tool via the -k flag, and it allows managing declarative resource overlays without template engines like Helm.

Answer

Kustomize replaces the Kubernetes API server entirely during resource creation.

Answer

Kustomize requires a centralized chart repository server similar to ChartMuseum.

Answer

Kustomize requires writing complex Go templates with conditional logic statements.

Question 5

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

Accepted Answer

kustomization.yaml. The kustomization.yaml file is the configuration file that directs Kustomize on how to manage the resources.

Answer

base.yaml

Answer

overlay.yaml

Answer

resources.yaml

Question 6

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

Accepted Answer

DeploymentConfigs are OpenShift-specific. DeploymentConfigs are native OpenShift objects that support triggers and lifecycle hooks, while Deployments are standard Kubernetes resources.

Answer

Deployments support triggers, DeploymentConfigs do not

Answer

Deployments can be scaled, DeploymentConfigs cannot

Answer

DeploymentConfigs do not support rollbacks

Question 7

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

Accepted Answer

-o yaml. The -o (or --output) flag is used to specify the output format, such as yaml or json.

Answer

--format yaml

Answer

--yaml

Answer

-f yaml

Question 8

Which THREE things can you configure in a BuildConfig?

Accepted Answer

Build Strategy. BuildConfig allows configuration of triggers, strategies, and source references.

Answer

Replicas

Answer

Route settings

Question 9

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

Accepted Answer

Sending a HTTP POST to the webhook URL. Builds can be triggered by manual user command or by a configured webhook.

Answer

Restarting the OpenShift cluster

Answer

Updating a ConfigMap

Answer

Changing a Namespace

Question 10

Which THREE items are contained within a Helm Chart structure?

Accepted Answer

values.yaml. A chart contains metadata (Chart.yaml), templates, and values.

Answer

Dockerfile

Answer

ImageStream

Question 11

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

Accepted Answer

oc logs build/[build-name]. The 'oc logs' command is used to stream the logs of a build pod or the build process itself.

Answer

oc get build

Answer

oc describe build

Answer

oc logs [pod-name]

Question 12

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

Accepted Answer

In the BuildConfig resources field. You can define 'resources' in the 'spec' of the BuildConfig to control CPU/Memory for the build pod.

Answer

In the LimitRange

Answer

In the project Quota

Answer

In the Deployment object

Question 13

An administrator needs to modify the SSH key used for debugging worker nodes across an OpenShift 4.14 cluster. Which resource type should the administrator edit or create to apply this change cluster-wide to all worker nodes?

Accepted Answer

Create or modify a MachineConfig object that targets the worker role and specifies the sshKey field.. MachineConfig objects allow administrators to manage node-level configuration changes, including injecting authorized SSH keys for the core user.

Answer

Modify the ClusterVersion custom resource spec field.

Answer

Edit the kubelet configuration map in the kube-system namespace.

Answer

Update the authentication.config.openshift.io cluster operator resource.

Question 14

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.)

Accepted Answer

maxSurge. The rollingUpdate strategy for deployments supports maxSurge and maxUnavailable parameters to control the pace and capacity during updates.

Answer

minReadySeconds

Answer

timeoutSeconds

Answer

rollbackWindow

Question 15

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

Accepted Answer

--values. The '-f' or '--values' flag is used to specify a YAML file containing override values.

Answer

--override

Answer

--config

Answer

--set-file