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Certified Jenkins Engineer (CJE) Questions and Answers

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Questions # 1:

Which can you do with the Jenkins Install Wizard? Choose 3 answers

Options:

Install a pre-defined set of recommended plugins.

Install Jenkins without any extra plugins.

Choose the version of Jenkins core to install.

Manually select plugins to install from a set of predefined plugins.

Install all existing open-source plugins for Jenkins.

Answer

A, B, D

Questions # 2:

You are tasked by management to explain continuous deployment. Your explanation will be used in the company's annual report, so you need to ensure you understand it properly. Which is the best definition?

Options:

Building in 60 minutes or less.

A software development practice where contributors are integrating their work very frequently to production in an automated fashion.

A software development discipline where software is built so that it can be released to production at any time.

Answer

Explanation

Continuous deployment is an extension of continuous integration and continuous delivery. It means that changes are deployed automatically to production after passing the automated continuous integration process.

Questions # 3:

What happens to all associated configuration metadata (on jobs, builds, etc) after a plugin is uninstalled?

Options:

Nothing happens. The data remains on the persisted form of the configuration until the next save of that Rem (job, etc.).

It is deleted on the next restart of Jenkins.

It Is deleted on the next configuration reload.

It Is deleted Immediately.

The data is backed up and then deleted from the live configuration.

Answer

Questions # 4:

You have a friend who wants fame and fortune from being a developer working with Jenkins. He wants to write code for it and doesn't know anything about it yet. He wants to know what language Jenkins is written in. You, of course, know the answer and are delighted to tell them. Which of the following do you tell them it's written in?

Options:

.NET

Ruby

Python

Java

Answer

Explanation

Jenkins core is written in Java.

Questions # 5:

What does the Build Queue contain?

Options:

Pull requests

Disabled projects

Scripts waiting approval

Builds waiting for an executor

Answer

Explanation

The status of executors show in the Build Queue.

Questions # 6:

What is a code coverage test?

Options:

It tests components coming together

It tests against the product specifications.

It tests a small piece of functionality, usually at the class method level.

It tests how well your code is tested.

Answer

Questions # 7:

Over the last six months, a large number of projects have been added to Jenkins. You have been asked by your manager to do some cleanup by creating some list views. How would you go about creating these list views?

Options:

All of these

Using a regular expression pattern

Explicitly set projects to view

Explicitly set recursively in sub-folders

Answer

Explanation

You can add projects to list views with all of these options.

Questions # 8:

A freestyle job is set up to "Enable concurrent builds if necessary" and configured to run on a single node. How can you ensure that multiple concurrent runs share the same workspace?