Jenkins MCQs

We have made 50 Jenkins MCQs covering various topics like setup, usage, plugins, configuration, and integration.

1. What is Jenkins?

a) A code analysis tool

b) A CI/CD tool for automating software builds, testing, and deployment

c) A version control system

d) A container orchestration tool

Answer: b) A CI/CD tool for automating software builds, testing, and deployment

2. Which language is Jenkins primarily written in?

a) Java

b) Python

c) Ruby

d) C++

Answer: a) Java

3. What does CI/CD stand for in Jenkins?

a) Continuous Integration/Continuous Deployment

b) Continuous Interaction/Continuous Delivery

c) Continuous Inspection/Continuous Debugging

d) Continuous Integration/Continuous Distribution

Answer: a) Continuous Integration/Continuous Deployment

4. Which plugin is used to integrate Jenkins with Git?

a) GitHub Plugin

b) Git Plugin

c) Jenkins Git Integration Plugin

d) GitHub Webhook Plugin

Answer: b) Git Plugin

5. What is a Jenkins job?

a) A set of tasks to be executed

b) A script that automates server management

c) A type of Jenkins plugin

d) A tool for managing Jenkins users

Answer: a) A set of tasks to be executed

6. What type of Jenkins job is used for executing a single build in Jenkins?

a) FreeStyle Project

b) Pipeline

c) Multi-Configuration Project

d) GitHub Organization

Answer: a) FreeStyle Project

7. In Jenkins, what is a build pipeline?

a) A set of jobs that execute sequentially or in parallel to deliver software

b) A method for storing build artifacts

c) A Jenkins plugin for continuous integration

d) A testing framework used in Jenkins

Answer: a) A set of jobs that execute sequentially or in parallel to deliver software

8. Which of the following is used to store Jenkins build data and configurations?

a) Jenkins Home Directory

b) Workspace Directory

c) Docker Container

d) Git Repository

Answer: a) Jenkins Home Directory

9. What is the purpose of a Jenkinsfile?

a) To configure Jenkins on the server

b) To define a pipeline as code

c) To define Jenkins global settings

d) To store build logs

Answer: b) To define a pipeline as code

10. Which of the following is a common SCM (Source Code Management) tool integrated with Jenkins?

a) Git

b) SVN

c) Mercurial

d) All of the above

Answer: d) All of the above

11. What is a Jenkins plugin?

a) A tool that adds new functionality to Jenkins

b) A type of configuration file

c) A source code management system

d) A build tool for Jenkins

Answer: a) A tool that adds new functionality to Jenkins

12. Which of the following is the default web interface for Jenkins?

a) localhost:8080

b) localhost:9000

c) localhost:5000

d) localhost:4000

Answer: a) localhost:8080

13. What does the Jenkins Pipeline plugin allow you to do?

a) Execute a sequence of commands as part of a build

b) Integrate Jenkins with version control systems

c) Perform unit tests

d) Integrate Jenkins with database systems

Answer: a) Execute a sequence of commands as part of a build

14. Which of the following Jenkins features enables automated testing of code after each build?

a) Jenkins Artifacts

b) Jenkins Test Results

c) Jenkins SCM Polling

d) Jenkins Build Triggers

Answer: b) Jenkins Test Results

15. What does the Jenkins “Build Trigger” function allow?

a) Triggering a build manually

b) Automatically triggering a build based on specific events (e.g., code changes)

c) Triggering a build every time a user logs in

d) Triggering builds based on Jenkins plugin updates

Answer: b) Automatically triggering a build based on specific events (e.g., code changes)

16. What is a Jenkins workspace?

a) A directory where Jenkins stores build artifacts

b) A temporary folder to store files before the build process starts

c) A directory for storing Jenkins plugins

d) A directory that holds the configuration files for Jenkins

Answer: b) A temporary folder to store files before the build process starts

17. How can you schedule a Jenkins job to run at specific times?

a) Using Build Triggers

b) Using Cron Syntax in the job configuration

c) By setting a webhook in Jenkins

d) By using a Git hook

Answer: b) Using Cron Syntax in the job configuration

18. What is the Jenkins “Blue Ocean” plugin used for?

a) A new Jenkins UI for better visualization of pipelines

b) A security feature for Jenkins users

c) A tool for backing up Jenkins configurations

d) A version control integration plugin

Answer: a) A new Jenkins UI for better visualization of pipelines

19. What is the purpose of the docker plugin in Jenkins?

a) To create and manage Docker containers for builds

b) To trigger Docker containers to deploy applications

c) To monitor the Docker service on the Jenkins server

d) To create Docker images

Answer: a) To create and manage Docker containers for builds

20. What is Jenkins’ default method of managing users and permissions?

a) Using the built-in Jenkins user database

b) Using an external LDAP server

c) Using GitHub for authentication

d) Using external security plugins

Answer: a) Using the built-in Jenkins user database

21. What is the term used in Jenkins for managing the execution of jobs in a distributed system?

a) Build Nodes

b) Build Executors

c) Master-Slave Architecture

d) Build Agents

Answer: c) Master-Slave Architecture

22. Which Jenkins feature allows running the same job on multiple agents in parallel?

a) Jenkins Pipelines

b) Jenkins Matrix Project

c) Jenkins Parallel Execution

d) Jenkins Nodes

Answer: b) Jenkins Matrix Project

23. Which Jenkins plugin enables the integration with Docker containers?

a) Docker Plugin

b) Docker Pipeline Plugin

c) Docker Jenkins Plugin

d) Docker Engine Plugin

Answer: b) Docker Pipeline Plugin

24. What is the function of the Jenkins “Artifactory” plugin?

a) To deploy code to remote servers

b) To manage build artifacts

c) To trigger builds automatically

d) To monitor the Jenkins environment

Answer: b) To manage build artifacts

25. Which Jenkins plugin integrates with GitHub for build triggers and status reporting?

a) GitHub plugin

b) GitHub Pull Request Builder plugin

c) GitHub Branch Source plugin

d) All of the above

Answer: d) All of the above

26. How can Jenkins integrate with version control systems like Git?

a) Using SCM plugins

b) By adding a build step to run git commands

c) By configuring a webhook on the VCS server

d) All of the above

Answer: d) All of the above

27. What type of Jenkins job is used for continuous delivery and deployment pipelines?

a) FreeStyle Project

b) Pipeline

c) Multi-configuration Project

d) Matrix Project

Answer: b) Pipeline

28. What is Jenkins’ default method for handling build failures?

a) Stop the entire Jenkins server

b) Continue executing other jobs

c) Mark the build as unstable and notify the user

d) Automatically restart the build

Answer: c) Mark the build as unstable and notify the user

29. What is a Jenkins artifact?

a) A file created during the build process that is stored for later use

b) A Jenkins job configuration file

c) A plugin used for handling source code

d) A tool for monitoring Jenkins jobs

Answer: a) A file created during the build process that is stored for later use

30. What is Jenkins’ “Declarative Pipeline”?

a) A scripted pipeline written entirely in Groovy

b) A structured and predefined way to define pipelines

c) A way to manually configure each pipeline step

d) A GUI for creating pipelines

Answer: b) A structured and predefined way to define pipelines

31. What is the “Workspace” in Jenkins?

a) A directory that stores Jenkins plugins

b) A temporary directory where a job’s build files are stored

c) A directory that stores Jenkins configuration files

d) A shared network drive

Answer: b) A temporary directory where a job’s build files are stored

32. What does the Jenkins “Slack Notification” plugin do?

a) Notifies Jenkins users about job status in Slack channels

b) Sends emails to users on job completion

c) Pushes code to a Slack channel

d) Creates Jenkins jobs from Slack commands

Answer: a) Notifies Jenkins users about job status in Slack channels

33. How does Jenkins handle multi-branch pipelines?

a) Using the “Multi-Branch Pipeline” job type

b) By creating multiple jobs for each branch manually

c) By using the GitHub Branch Source plugin

d) By using matrix builds

Answer: c) By using the GitHub Branch Source plugin

34. What is the function of Jenkins “Freestyle Project”?

a) A basic job type to configure and run simple builds

b) A method for configuring Jenkins plugins

c) A pipeline that defines complex stages of builds

d) A tool for managing Jenkins users

Answer: a) A basic job type to configure and run simple builds

35. What does the Jenkins “Retry” plugin do?

a) Retries a job upon failure for a certain number of times

b) Automatically retries the failed builds with a different configuration

c) Restarts Jenkins server after job failure

d) Notifies users of failed job retries

Answer: a) Retries a job upon failure for a certain number of times

36. Which of the following is required for running Jenkins?

a) Java Runtime Environment (JRE)

b) Python Interpreter

c) Node.js

d) MySQL Database

Answer: a) Java Runtime Environment (JRE)

37. How can Jenkins jobs be triggered remotely?

a) By using the “Trigger Build Remotely” option in job configuration

b) By using webhooks from GitHub

c) By sending HTTP requests to Jenkins REST API

d) All of the above

Answer: d) All of the above

38. What is the Jenkins “Matrix Project”?

a) A type of Jenkins job that runs the same job with different parameters

b) A special type of pipeline for parallel executions

c) A job type for managing Jenkins nodes

d) A tool for managing Jenkins plugins

Answer: a) A type of Jenkins job that runs the same job with different parameters

39. What does the “Post-build Actions” section in Jenkins allow you to do?

a) Trigger another job after the current job completes

b) Configure the environment for Jenkins

c) Handle build failures by sending alerts

d) Create a new Jenkins job

Answer: a) Trigger another job after the current job completes

40. What is the purpose of Jenkins’ “Parameters” in a job?

a) To define dynamic input values for a job

b) To trigger a job remotely

c) To define job configuration settings

d) To define the Jenkins node the job should run on

Answer: a) To define dynamic input values for a job

41. What is Jenkins’ “Declarative Pipeline” written in?

a) YAML

b) Groovy

c) JavaScript

d) Shell scripting

Answer: b) Groovy

42. Which of the following is a common build tool integrated with Jenkins?

a) Maven

b) Gradle

c) Ant

d) All of the above

Answer: d) All of the above

43. What is Jenkins’ “Parameterized Build” used for?

a) To pass dynamic parameters into Jenkins jobs

b) To configure job settings

c) To pass arguments to external scripts

d) To manage Jenkins configurations

Answer: a) To pass dynamic parameters into Jenkins jobs

44. What does the Jenkins “Email Extension” plugin do?

a) Sends custom emails upon build success or failure

b) Sends emails with build logs

c) Configures Jenkins email server

d) Sends emails only on job failures

Answer: a) Sends custom emails upon build success or failure

45. What does the Jenkins “Job DSL” plugin allow you to do?

a) Write Jenkins jobs using a Domain Specific Language

b) Define multiple Jenkins jobs in a single script

c) Automate the creation of Jenkins jobs

d) All of the above

Answer: d) All of the above

46. Which of the following is NOT a method of Jenkins job triggering?

a) SCM Polling

b) Webhook triggers

c) Time-based triggers

d) Manual Trigger

Answer: d) Manual Trigger

47. Which Jenkins feature helps in managing dependencies between jobs?

a) Build triggers

b) Downstream jobs

c) Build nodes

d) Post-build actions

Answer: b) Downstream jobs

48. What is Jenkins “Artifact Archiver” used for?

a) To archive build logs

b) To store build artifacts

c) To trigger builds after storing artifacts

d) To manage the artifact repository

Answer: b) To store build artifacts

49. How can Jenkins be secured?

a) Using an external authentication plugin

b) Using role-based access control (RBAC)

c) By encrypting sensitive data

d) All of the above

Answer: d) All of the above

50. What is the Jenkins “Pipeline as Code” concept?

a) Storing pipeline definitions in Jenkins UI

b) Defining pipelines using external configuration files like Jenkinsfile

c) Using pre-defined templates for pipelines

d) Writing pipeline scripts in XML format

Answer: b) Defining pipelines using external configuration files like Jenkinsfile

These are the 50 Jenkins MCQs that will test your basic understanding of Jenkins. You can also explore our other blogs on Unboundlocalerror local variable referenced before assignment and Pandas dataframe append deprecated use pd.concat now.

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