Drupal Interview Questions and Answers

Last updated on Feb 06, 2023
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Drupal Interview Questions

Drupal is an open-source PHP content-management framework distributed under the GNU General Public License. The frame provides a back-end framework for a lot of websites worldwide. It offers a sophisticated API, and the basic installation and administration require no programming skills. It runs on any platform that supports a server capable of running PHP and a database for storing content. To get into complete the complete details about drupal interview questions, we are mentioning Questions and Answers that can be a help to you.

Advantages of Drupal
  • Quicker content authoring
  • Flexible architecture.
  • It is designed for the mobile-first environment.
  • Better language support.

The following are the Drupal Interview Questions and Answers for experienced and freshers that are most likely to be asked:

Most Frequently Asked Drupal Interview Questions

Here in this article, we will be listing frequently asked Drupal Interview Questions and Answers with the belief that they will be helpful for you to gain higher marks. Also, to let you know that this article has been written under the guidance of industry professionals and covered all the current competencies.

Q1. What is DRUSH in Drupal?

It is a very useful tool as it helps you perform various admin tasks using one or two commands in the terminal, replacing the need for many clicks and page refreshes in the UI. "DRUSH" is an awesome shell interface for managing Drupal right from our cloud server using command line.

Q2. How caching works in Drupal 8?

Drupal consists of multiple layers for execution. Hence, caching is a vital aspect of Drupal to measure performance accurately.

Here are the various ways of caching in Drupal:
  • BOOST Caching
  • Using Content Delivery Networks(CDN)
Q3. What is node in Drupal?

It is a piece of individual content such as a page, poll and article. Most content on a Drupal website is stored/treated as "nodes".

Q4. How to enable jQuery in Drupal?

To install JQuery in Drupal, follow these steps carefully:

  • Start with downloading the jquery_ui Drupal module by using the stable version available (6.x-1.5). Now, move it to your modules folder (e.g. sites/all/modules/jquery_ui)
  • Now, go to the jQuery UI and then download the "Legacy" 1.7.x version. Not the 1.8.x version or any other later branch!
  • After completing the above step, inside a temporary directory, extract the directory "development-bundle" collected from the archive and finally rename it to "jquery.ui".
  • After renaming, start copying the renamed directory, (jquery.ui) into the sites/all/libraries folder (create a separate folder like this if it should look like sites/all/libraries/jquery.ui.)
  • Finally activate the jquery_ui module in Drupal version 8.
Q5. How do you enable twig to debug in Drupal 8?

While there are many methods to enable Twig Debug, this is one of the easiest and simple way

  • Step 1: Navigate to the \sites\default in the Drupal 8 dashboard.
  • Step 2: Now, start the process by making a copy of the default.services.yml file and renaming it to services.yml (if services.yml does not already exist).
  • Step 3: Next, open the file and search for this phrase 'twig.config'.
  • Step 4: Once you’ve got the phrase, set the debug mode to true, auto_reload mode to true and cache to false mode.
  • Step 5: Finally, go to the bottom of the file and copy the following code block as it is:

debug: true


Q6. How to create a new theme in Drupal 8?

To create a theme in Drupal 8 from scratch, use the following steps:

  • Create a theme folder inside Drupal 8 to store your theme in a .info.yml file and libraries file.
  • Create the .info.yml file
  • Create the .libraries.yml file.
  • Start creating the stylesheets
  • Now, create designs and then, you have your own theme in Drupal 8.
Q7. What are the new features of Drupal 8?
  • New Theme Engine : It includes a brand new theming engine called Twig. It is PHP-based, flexible, fast, and secure.
  • Drupal 8 is mobile first now
  • It has extensive multilingual features right out of the box.
  • It has configuration management built into it at the file-system level so that carrying over configuration elements in Drupal 8.
  • Easy Authoring : It bring unprecedented power into the hands of the Content Editor, with WYSIWYG editor CKEditor now bundled with the core.
  • Views Now Part of its Core :
  • Better Support for Accessibility
  • Web Services in-Built in Drupal 8
  • In Drupal 8 it has Guided Tour
  • JavaScript Automated Testing in Drupal 8
  • Loading Speed improvement in Drupal 8.
Q8. How can we add Regions in Drupal Theme and list some Default Regions?

Adding regions to a theme requires two things that's are given below :-

  • Adding region meta-data to your THEMENAME.info.yml file.
  • Please edit your page.html.twig file then print new regions.

Default Regions

  • page.header
  • page.primary_menu
  • page.secondary_menu
  • page.highlighted
  • page.help (It has dynamic help text for admin pages)
  • page.content (main content of current page)
  • page.sidebar_first
  • page.sidebar_second
  • page.footer
  • page.breadcrumb
Q9. What is taxonomy in Drupal?

It is a powerful core module, gives our sites use of the organizational keywords known in another systems as categories or tags, or metadata. Taxonomy allows you to connect, relate and classify your website's content. These terms are gathered within "vocabularies". It is the practice of classifying content.

Q10. Why we used template.php in Drupal?

It allows you to override a theme function. It is available in the theme directory.

Development History

Drupal was written as a message board by Dries Buytaert. In the year 2001, it became an open-source.

Latest Version: The latest version is Drupal 9.0.x released on 2nd December 2019 but might be this is not stable. The current stable version is 8.7.10 which released in 13th November 2019. This question was frequently asked in drupal 8 interview questions.

Reviewed and verified by Umesh Singh
Umesh Singh

My name is Umesh Singh having 11+ experience in Node.JS, React JS, Angular JS, Next JS, PHP, Laravel, WordPress, MySQL, Oracle, JavaScript, HTML and CSS etc. I have worked on around 30+ projects. I lo...