Drupal Interview Questions and Answers, Drupal Interview Questions and Answers Freshers, Drupal Interview Questions and Answers, Drupal Interview Questions

Before getting on to the Drupal interview questions, the student must know that the Drupal is a continuously varying field which needs the students as well as professionals to upgrade their skills with the new features and knowledge, to get fit for the jobs associated with Drupal. This post related to Drupal Interview Questions and Answers, Drupal Interview Questions and Answers Freshers, Drupal Interview Questions and Answers, Drupal Interview Questions will help you let out find all the solutions that are frequently asked in you upcoming Drupal interview.

Over thousands of vacancies available for the Drupal developers, experts must be acquaintance with all the component of Drupal technologies. This is necessary for the students in order to have in-depth knowledge of the subject so that they can have best employment opportunities in the future. Knowing every little detail about Drupal is the best approach to solve the problems linked with problem.

APTRON has spent hours and hours in researching about the Drupal Interview Questions and Answers, Drupal Interview Questions and Answers Freshers, Drupal Interview Questions and Answers, Drupal Interview Questions that you might encounter in your upcoming interview.  All these questions will alone help you to crack the interview and make you the best among all your competitors.

First of all, let us tell you about how the Drupal technology is evolving in today’s world and how demanding it is in the upcoming years. In fact, according to one study, most of the companies and businesses have moved to the Drupal. Now, you cannot predict how huge the future is going to be for the people experienced in the related technologies.

Hence, if you are looking for boosting up your profile and securing your future, Drupal will help you in reaching the zenith of your career. Apart from this, you would also have a lot of opportunities as a fresher.

These questions alone are omnipotent. Read and re-read the questions and their solutions to get accustomed to what you will be asked in the interview. These Drupal interview questions and answers will also help you on your way to mastering the skills and will take you to the giant world where worldwide and local businesses, huge or medium, are picking up the best and quality Drupal professionals.

This ultimate list of best Drupal interview questions will ride you through the quick knowledge of the subject and topics like Data warehouse, Drupal Architecture, Multi Dimensional Modelling, Data warehouslng Life cycle. This Drupal interview questions and answers can be your next gateway to your next job as a Drupal expert.

These are very Basic Drupal Interview Questions and Answers for freshers and experienced both.

Q1: What is Drupal?
A1: Drupal is a free and open source Content Management System (CMS) that allows organizing, managing and publishing your content.

Q2: List some features of Drupal?
A2: The Features of Drupal are:

  • It makes easy to create and manage your site.
  • Translates anything in the system with built-in user interfaces.

It connects your website to other sites and services using feeds, search engine connection capabilities etc.

  • Drupal is open source software hence requires no licensing costs.
  • It designs highly flexible, creative website to the users and display more effectively to increase the visitors.
  • Drupal can publish your content on social media such as Twitter, Facebook and other social mediums.

Q3: What is Drupal blocks?
A3: Blocks are container objects that are used to organize your content of your website.

Q4: What is the maximum and minimum width for media query for Landscape tablet in tablet layout?
A4: Media query for Landscape tablet will be min-width: 769px and max-width: 1024px.

Q5: What is the use of Menu Management in Drupal?
A5: Menu Management is the important part to navigate through your Drupal admin page.

Q6: What is taxonomy?
A6: Taxonomy can be thought of classifying website content which display specific content based on taxonomy terms.

Q7: What is Drupal Pane module?
A7: Pane module is used to translate the custom panel’s pane with optional title that will be stored as variables and it can be translate or edit quickly.

Q8: What is Drupal invoice generation?
A8: Invoice is a document with a statement of amount and cost, unique invoice number and tax information.

Q9: Why Drupal is considered powerful CMS compare to other CMS system?
A9: Using content construction kit Drupal allows you to create multiple content types without any programming skills. And for each content type it allows customize theme template. You can have an article, story, slideshow, content type and so on.

Q10: Explain how caching work in Drupal?
A10: Through caching Drupal allows to speed up website using different configuration like page caching, block caching and lifetime for cached pages.

  • Page Caching: It enables the entire HTML of each page to be stored in the database. It reduces the amount of queries needed
  • Block Caching: You can set the cache setting for a block in views, when block created by views
  • Minimum cache lifetime: It is the amount of time before the page cache is cleared. On each cron run, page caches are cleared.
  • Expiration of cached pages: It only applies for an external mechanism, for example, your browser cache or varnish

Q11: What is a patch?
A11: A patch is a file that contains a list of differences between one set of files, and another. Through patches, all the changes in code like additions or deletions to Drupal core can be made. Also, patches can be used to make changes to another copy of the original or main file.

Q12: What do PDO mean?
A12: PDO means PHP Data Object; it is a lean and consistent way to access databases. It allows developers to write portable code with ease.

Q13: What is DRUSH in Drupal?
A13: DRUSH is a command line shell and UNIX scripting interface for Drupal

Q14: Explain what is Drupal weight?
A14: The term Drupal weight is used to describe the priority or order in which the function is processed, or block/ node is displayed.

A heavier (+10) weights will appear lower in lists while a lower weight (-10) will float to the top of lists.

Q15: Explain what is the use of Ctools in Drupal?
A15: This suite is a set of APIs and tools, and it makes easier to handle AJAX requests and tell the client what to do with them.

Q16: What Are Hooks In Drupal ?
A16: Hooks in Drupal allows modules to interact with the Drupal core. Drupal’s module system is based on the concept of “hooks”. A hook is a PHP function that is named foo_bar(), where “foo” is the name of the module and “bar” is the name of the hook. Each hook has a defined set of parameters and a specified result type. To extend Drupal, a module need simply implement a hook. When Drupal wishes to allow intervention from modules, it determines which modules implement a hook and calls that hook in all enabled modules that implement it.

Q17: Which Are Commonly Used Php Based Cmss ?
A17: Drupal, Joomla, WordPress, TYPO3.

Q18: Explain The Function And Working Of Dashboard Module ?
A18: The Dashboard module provides a Dashboard page in the administration menu. The intention of the Dashboard page is to give administrators a quick overview of important information on the website.

Q19: How Database System Of Drupal Works ?
A19: Drupal stores information in a database; each type of information has its own database table. For instance, the basic information about the nodes of your site are stored in the Node table, and if you use the CCK module to add fields to your nodes, the field information is stored in separate tables. Comments and Users also have their own database tables, and roles, permissions, and other settings are also stored in database tables.

Q20: How To Fetch A New Version Of Drupal?
A20: You can use your web browser to go to Drupal.org and download the newest version, or you can use any number of tools to do this for you. For example, you can use Drush, if you have it installed and configured in the Vagrant profile).

Q21: What Is Difference Between Diff And Patch ?
A21: diff creates patch In simple terms, the diff command is used to compare differences between two versions of a file. The resulting file is called a patch, and typically is given (by the user) a “.patch” suffix.

This patch file then can be used on other copies of the “old” file by using the patch command, thus updating their “old” file(s) to match the “new” file(s).

Why you would use diff When might one use diff to create a patch file? Let’s say you are customizing a module to fix a bug, and have saved a new version of the module. How will you pass on your bug fix to others? Simply passing on your version of the module may not work, because it’s quite possible someone else has modified some other aspect of the code at the same time and you both would be overwriting each others’ changes.

So instead, what you do is run diff between the two files, and then upload the resulting patch — which others can then apply to their files using the patch command. (And you can apply other people’s patches against your files, without losing your own changes.).

The added benefit of this type of workflow is that changes to the code can easily be tracked — and undone, if necessary — which is essential in a community-developed project such as Drupal.

Q22: What is entity and entity api?
A22: They provide a unified way to work with different data units in Drupal. Drupal 7 is all about entities. They are everywhere: nodes, users, taxonomy terms, vocabularies…

But how, as developers, can we create our own entities? When do we really need to do that? I think these questions are really very project-specific. We can probably use nodes for nearly everything. But when it comes to performance-sensitive projects, nodes should really only be used for content, and we should separate as much as possible from nodes. Why? Nodes are revisioned, they fire a lot of hooks, and they have functionality that we likely won’t need. Also if we know exactly what fields we should have in our entities, we can create our own custom entities to avoid all those joins of Field API tables.

Q23: What is use of template.php file?
A23: Overriding other theme functions. If you want to override a theme function not included in the basic list (block, box, comment, node, page), you need to tell PHPTemplate about it.

To do this, you need to create a template.php file in your theme’s directory. This file must start with a PHP opening tag

Q24: How to use the multiple themes in one project?
A24: use the global variable, default_theme.

Q25: How to drop the table using module?
A25: Use db_drop_table method in install file

Q26: What is difference between innodb and myIsam?
A26: First major difference I see is that InnoDB implements row-level lock while MyISAM can do only a table-level lock. You will find better crash recovery in InnoDB. However, it doesn’t have FULLTEXT search indexes, as does MyISAM. InnoDB also implements transactions, foreign keys and relationship constraints while MyISAM does not.

Q27: How to use the contextual filter?
A27: In Drupal, each type of information has its own database table. For instance, the basic information about the nodes of your site are stored in the Node table, Comments and Users also have their own database tables, and roles, permissions, and other settings are also stored in database tables.

Q28: If we delete the page.tpl.php then drupal site will work or not?
A28: Yes. will work. It will check for node.tpl.php file.

Q29: How to use preprocess function?
A29: The main role of the preprocessor is to set up variables to be placed within the template (.tpl.php) files. From Drupal 7 they apply to templates and functions, whereas in Drupal 6 preprocess functions only apply to theming hooks implemented as templates. Plain theme functions do not interact with preprocessors.

Q30: What is difference between update and alter query?
A30: ALTER is a DDL (Data Definition Language) statement. Whereas UPDATE is a DML (Data Manipulation Language) statement. One is used to update the structure of the table (add/remove field/index etc). Whereas UPDATE is used to update data.

Q31: Which module can be used for E-commerce?
A31: Use ubercart module

Q32: Which ORM is used in Drupal 7?
A32: Doctrine is the ORM.

Q33: Which Design Pattern used in Drupal?
A33: Singleton Design pattern is used in Drupal.

Drupal Conclusion Interview FAQs

We know the list of Drupal Interview Questions and Answers, Drupal Interview Questions and Answers Freshers, Drupal Interview Questions and Answers, Drupal Interview Questions is overwhelming but the advantages of reading all the questions will maximize your potential and help you crack the interview. The surprising fact is that this Drupal interview questions and answers post covers all the basic of the Drupal technology and you have to check out the FAQs of different components of Drupal too.

However, you will be asked with the questions in the interview related to the above mentioned questions. Preparing and understanding all the concept of Drupal technology will help you strengthen the other little information around the topic.

After preparing these interview questions, we recommend you to go for a mock interview before facing the real one. You can take the help of your friend or a Drupal expert to find the loop holes in your skills and knowledge. Moreover, this will also allow you in practicing and improving the communication skill which plays a vital role in getting placed and grabbing high salaries.

Remember, in the interview, the company or the business or you can say the examiner often checks your basic knowledge of the subject. If your basics is covered and strengthened, you can have the job of your dream. The industry experts understand that if the foundation of the student is already made up, it is easy for the company to educate the employ towards advance skills. If there are no basics, there is no meaning of having learnt the subject.

Therefore, it’s never too late to edge all the basics of any technology. If you think that you’ve not acquired the enough skills, you can join our upcoming batch of Drupal Training in Noida. We are one of the best institute for Drupal in noida which provide advance learning in the field of Drupal Course. We’ve highly qualified professionals working with us and promise top quality education to the students.

We hope that you enjoyed reading Drupal Interview Questions and Answers, Drupal Interview Questions and Answers Freshers, Drupal Interview Questions and Answers, Drupal Interview Questions and all the FAQs associated with the interview. Do not forget to revise all the Drupal interview questions and answers before going for the Drupal interview. In addition to this, if you’ve any doubt or query associated with Drupal, you can contact us anytime. We will be happy to help you out at our earliest convenience. At last, we wish you all the best for your upcoming interview on Drupal Technology.