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Certified Jenkins Engineer (CJE) Questions and Answers

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Viewing questions 21-30 out of questions

Questions # 21:

Which is an example of a Jenkins plugin?

Options:

All of the others

Parameterized Trigger

Pipeline

Credentials

Answer

Explanation

There are hundreds of Jenkins plugins available, and they can provide a multitude of functionality.

Questions # 22:

How do you navigate to the matrix-based security section of Jenkins?

Options:

Manage Jenkins -> Configure Global Security

Manage Jenkins -> Configure System

None of these

Manage Jenkins -> Configure Global Options

Answer

Explanation

This is how you would use the dashboard to navigate to the Security section.

Questions # 23:

Which is not a common stage of CI/CD?

Options:

Deploy

Test

Build

Kill

Answer

Explanation

Build, deploy, and test are all common stages of a CI/CD process.

Questions # 24:

What interval syntax could I use to trigger a build every day?

Options:

@daily

H H * * *

30 12 * * *

All of these

Answer

Questions # 25:

Which is not a Git plugin-provided environment variable?

Options:

GIT_COMMIT

GIT_ORIGIN_URL

GIT_URL

GIT_BRANCH

Answer

Explanation

The others are all default Git plugin-provided environment variables.

Questions # 26:

You've been promoted at work and are now in charge of the system administrators that look after the Jenkins platform for your company. You no longer want to get notifications from Jenkins, but your subordinates don't know what settings to change in a Jenkinsfile. You give them a look, and say one of the following is what needs to be changed:

Options:

notice

alert

emailext

Answer

Explanation

The emailext function can be used from a Jenkinsfile to configure notifications.

Questions # 27:

Which of the following is true about resuming a Declarative Pipeline?

Options:

Declarative Pipelines cab be restarted after a Jenkins failure but not after a transient outage (such as a network failure or disk space exhaustion).

Declarative Pipelines can be resumed only after a transient outage (such as a network failure or disk space exhaustion).

All Declarative Pipelines are restartable by default, with the same inputs (commit to build, parameters, etc) as the original run. Any data that was built In the original run Is available only If the preserveStashes() option Is specified In the Jenkinsfile

Declarative Pipelines that use Docker containers can not be resumed because the docker APIs that Jenkins calls to create the container are not serialized

A Declarative Pipeline can be restarted only If the preserveStashes() option Is set In the pipeline.

Answer

Questions # 28:

What's a benefit of incremental updates over a clean checkout?

Options:

It ensures there are no mistakes

None of these

It's faster

It's more thorough

Answer

Explanation

Instead of deleting and re-cloning a project repository into a workspace, you can save time by just pulling any changes. This can be problematic when files produced during the build may persist and cause issues in future builds.

Questions # 29:

Jenkins, along with several other automation platforms, provides developers and operators with tools that allow them to automate the deployment of environments with preconfigured source code, including the CI pipeline. What is this called?

Options:

Continuous Integration

Continuous Deployment

Continuous Delivery

Infrastructure as Code

Answer

Explanation

"Infrastructure as code" means some or all of the state of your infrastructure is defined in source code. This is achieved through configuration management tools, like Puppet and Chef. The continuous integration component of infrastructure is defined in the Jenkinsfile, which lives amongst the project source code, illustrating infrastructure as code.

Questions # 30:

What's the difference between authentication and authorization?