{"id":25986,"date":"2021-12-18T09:28:35","date_gmt":"2021-12-18T09:28:35","guid":{"rendered":"https:\/\/www.devopsschool.com\/blog\/?p=25986"},"modified":"2022-04-13T16:57:12","modified_gmt":"2022-04-13T16:57:12","slug":"jenkins-related-faqs","status":"publish","type":"post","link":"https:\/\/www.devopsschool.com\/blog\/jenkins-related-faqs\/","title":{"rendered":"Top Jenkins interview questions and answers"},"content":{"rendered":"\n<h2 class=\"wp-block-heading\">What is a basic requirement for using Jenkins?<\/h2>\n\n\n\n<p>To use Jenkins you require:\u00a0<strong>A source code repository that is accessible<\/strong>, for instance, a Git repository. A working build script, e.g., a Maven script, is checked into the repository.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">What are the components in Jenkins?<\/h2>\n\n\n\n<p>Jenkins is mainly integrated with two components. These include&nbsp;<strong>version systems and build tools<\/strong>. While Git and SVN are examples of the former, Apache Maven is an example of the latter.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">What are plugins in Jenkins?<\/h2>\n\n\n\n<p>Plugins are the\u00a0<strong>primary means of enhancing the functionality of a Jenkins environment to suit organization- or user-specific needs<\/strong>. There are over a thousand different plugins that can be installed on a Jenkins controller and integrate various build tools, cloud providers, analysis tools, and much more.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">What is unit testing in Jenkins?<\/h2>\n\n\n\n<p>Jenkins provides an out of box functionality for Junit and provides a host of plugins for unit testing for other technologies, an example being MSTest. Net Unit tests. If you go to the link https:\/\/wiki.jenkins-ci.org\/display\/JENKINS\/xUnit+Plugin it will give the list of Unit Testing plugins available.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">What is an agent in Jenkins?<\/h2>\n\n\n\n<p>An agent is typically\u00a0<strong>a machine, or container, which connects to a Jenkins controller and executes tasks when directed by the controller<\/strong>. &#8230; The central, coordinating process that stores configuration, loads plugins, and renders the various user interfaces for Jenkins.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Why Jenkins is popular?<\/h2>\n\n\n\n<p>Jenkins is one of the essential CI\/CD tools for DevOps professionals. It is one of the most trusted and well-known open-source tools. Jenkins is\u00a0<strong>used for building and testing software projects continuously<\/strong>\u00a0which makes it easy for developers to integrate changes in a project.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">What are the three blocks in the Jenkins pipeline?<\/h2>\n\n\n\n<p>It contains a group of states called\u00a0to <strong>build, deploy, test and release<\/strong>. These events are interlinked with each other. Every state has its events, which work in a sequence called a continuous delivery pipeline.\u00a0\u00a0<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">What are the parameters in Jenkins?<\/h2>\n\n\n\n<p>A&nbsp;<strong>build parameter allows us to pass data into our Jenkins jobs<\/strong>. Using build parameters, we can pass any data we want: git branch name, secret credentials, hostnames and ports, and so on. Any Jenkins job or pipeline can be parameterized.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">What is Jenkins migration?<\/h2>\n\n\n\n<p>You can:&nbsp;<strong>Move a job from one installation of Jenkins to another by simply copying the corresponding job directory<\/strong>. Make a copy of an existing job by making a clone of a job directory by a different name. Rename an existing job by renaming a directory.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>What is a basic requirement for using Jenkins? To use Jenkins you require:\u00a0A source code repository that is accessible, for instance, a Git repository. A working build script, e.g., a&#8230; <\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_joinchat":[],"footnotes":""},"categories":[42,2],"tags":[],"class_list":["post-25986","post","type-post","status-publish","format-standard","hentry","category-jenkins","category-uncategorised"],"_links":{"self":[{"href":"https:\/\/www.devopsschool.com\/blog\/wp-json\/wp\/v2\/posts\/25986","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.devopsschool.com\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.devopsschool.com\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.devopsschool.com\/blog\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.devopsschool.com\/blog\/wp-json\/wp\/v2\/comments?post=25986"}],"version-history":[{"count":3,"href":"https:\/\/www.devopsschool.com\/blog\/wp-json\/wp\/v2\/posts\/25986\/revisions"}],"predecessor-version":[{"id":26179,"href":"https:\/\/www.devopsschool.com\/blog\/wp-json\/wp\/v2\/posts\/25986\/revisions\/26179"}],"wp:attachment":[{"href":"https:\/\/www.devopsschool.com\/blog\/wp-json\/wp\/v2\/media?parent=25986"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.devopsschool.com\/blog\/wp-json\/wp\/v2\/categories?post=25986"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.devopsschool.com\/blog\/wp-json\/wp\/v2\/tags?post=25986"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}