RedHat EX288 問題練習

Question No : 1
How can you manage an application deployment using the OpenShift web console? (Choose two.)

• A.Modify environment variables
• B.Scale replicas up or down
• C.Create custom monitoring agents
• D.Rebuild the application image

答えを確認する

正解:
Explanation:
The web console allows real-time scaling and environment variable management, making it convenient for managing deployments.

Question No : 2
Which resource ensures high availability for services in OpenShift?

• A.Deployments
• B.ReplicaSets
• C.Routes
• D.Pods

答えを確認する

正解:
Explanation:
ReplicaSets maintain high availability by ensuring the desired number of pod replicas are running at all times.

Question No : 3
Which configuration file in Git specifies repository-level settings?

• A..gitignore
• B..gitconfig
• C..gitsettings
• D.config.yml

答えを確認する

正解:
Explanation:
The .gitconfig file stores repository-level settings, including user information and aliases, to manage Git configurations effectively.

Question No : 4
How can you verify the status of a pod in OpenShift?

• A.Use oc get pods
• B.Use oc describe pod <name>
• C.Use oc logs pod <name>
• D.All of the above

答えを確認する

正解:
Explanation:
Each command provides different insights into pod status: oc get pods shows overall status, oc describe pod provides details, and oc logs displays logs.

Question No : 5
What resource in OpenShift stores user credentials securely?

• A.ConfigMaps
• B.Secrets
• C.Routes
• D.Pods

答えを確認する

正解:
Explanation:
Secrets store sensitive information like user credentials and API tokens securely, protecting them from unauthorized access.

Question No : 6
What happens if a liveness probe fails repeatedly in OpenShift?

• A.The container is restarted
• B.The pod is deleted
• C.The deployment scales down
• D.The service is removed

答えを確認する

正解:
Explanation:
A failed liveness probe causes the container to restart, ensuring application recovery without affecting the overall pod.

Question No : 7
Which file must be present to automatically build an application using OpenShift Source-to-Image (S2I)?

• A.READM
• B.md
• C.index.html
• D.Dockerfile
• E..s2i/environment

答えを確認する

正解:
Explanation:
OpenShift's Source-to-Image (S2I) process requires a Dockerfile to define the application environment and build steps.

Question No : 8
What OpenShift feature allows controlling external traffic to applications?

• A.Routes
• B.Services
• C.ReplicaSets
• D.ConfigMaps

答えを確認する

正解:
Explanation:
Routes expose services to external clients by creating URLs, providing controlled access to applications running in OpenShift.

Question No : 9
How can you rollback to a previous deployment version in OpenShift?

• A.Use oc rollback <deployment>
• B.Use oc undo deployment <name>
• C.Use oc set rollback <deployment>
• D.Use kubectl apply rollback

答えを確認する

正解:
Explanation:
The oc rollback command restores a previous deployment configuration, reverting changes while maintaining application availability.

Question No : 10
What is the purpose of a readiness probe in a multi-container application? (Choose two.)

• A.Verify the application is responsive
• B.Ensure the container restarts automatically
• C.Confirm readiness to handle traffic
• D.Check the container's initial startup state

答えを確認する

正解:
Explanation:
Readiness probes validate that the application is ready to handle incoming requests, ensuring smooth operation in multi-container setups.

Question No : 11
Which Git command creates a branch for a new feature?

• A.git branch <branch-name>
• B.git create <branch-name>
• C.git checkout -b <branch-name>
• D.git init <branch-name>

答えを確認する

正解:
Explanation:
The git checkout -b command creates and switches to a new branch in one step, streamlining branch creation for new features.

Question No : 12
What is the primary purpose of the .gitignore file in Git?

• A.To prevent untracked files from being deleted
• B.To ignore specific files from being added to a repository
• C.To restrict access to the repository
• D.To track changes to ignored files

答えを確認する

正解:
Explanation:
The .gitignore file specifies patterns for files that should not be added to the repository, keeping irrelevant or sensitive data out of version control.

Question No : 13
How do you push a local image to the OpenShift internal registry?

• A.Use docker push
• B.Use oc tag
• C.Use oc image push
• D.Use podman push

答えを確認する

正解:
Explanation:
The podman push command pushes a local container image to the OpenShift internal registry, provided the registry login credentials are configured.

Question No : 14
Which of the following ensures secure image pulling from OpenShift's internal registry? (Choose two.)

• A.Assigning pull secrets to service accounts
• B.Configuring resource quotas
• C.Creating ImageStreams
• D.Setting proper access controls

答えを確認する

正解:
Explanation:
Pull secrets and access controls ensure secure image pulling from the internal registry, safeguarding private images against unauthorized access.

Question No : 15
How can you trigger a manual build in OpenShift?

• A.oc start-build <buildconfig>
• B.oc trigger-build <buildconfig>
• C.oc create build <buildconfig>
• D.oc set build <buildconfig>

答えを確認する

正解:
Explanation:
The oc start-build command manually triggers a build using the specified BuildConfig, bypassing any automated triggers.