109. Core Modules in Drupal 6, Drupal7 and Drupal 8

Read Here

https://www.drupal.org/node/1283408

108. How to create a responsive theme in drupal ?

Read Here

http://www.creativebloq.com/web-design/create-responsive-drupal-theme-9134569

107. What is a sub theme in Drupal ?

Sub-themes are just like any other theme, with one difference: They inherit the parent theme's resources. There are no limits on the chaining capabilities connecting sub-themes to their parents. A sub-theme can be a child of another sub-theme, and it can be branched and organized however you see fit. This is what gives sub-themes great potential.

Read More https://www.drupal.org/node/225125

106. What is template.php in drupal ?

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 but the close tag is not needed and it is recommended that you omit it. Also included in the file are stubs for the theme overrides. These stubs instruct the engine what template file to use and which variables to pass to it.

https://www.drupal.org/node/11811

105. What is drush in Drupal ?

read here - https://www.drupal.org/project/drush

104. What is entity api module ?

The entity api module extends the entity API of Drupal core in order to provide a unified way to deal with entities and their properties. Additionally, it provides an entity CRUD controller, which helps simplifying the creation of new entity types.

Read More here https://www.drupal.org/project/entity

103. What are the system requirements for drupal 7 and drupal 8 ?

Drupal 7

• Database: MySQL 5.0.15 or PostgreSQL 8.3
• PHP Version 5.2 or higher
• PHP Memory: 40M - 64M

Drupal 8

https://www.drupal.org/node/270?no_cache=1403432410

102. What is new in drupal 7 ?

Read Here

https://www.drupal.org/about/new-in-drupal-7

Video Answer
http://drupal-videos.blogspot.com/2014/06/102-what-is-new-in-drupal-7.html

Drupal Job Interview Questions and Answers ( a set of 50 questions, q52-q101)

• 101. What hardware does Drupal.org run on?
• 100. Drupal and Working with JavaScript
• 99. Why does Drupal need a database? What database...
• 98. How to create a static archive of a Drupal web...
• 97. Programming best practices and CMS(drupal) bes...
• 96. what are Drupal Distributions and Drupal inst...
• 95. Drupal coding standards
• 94. Drupal 8 classes and interfaces
• 93. Explain drupal advanced search
• 92. Drupal 8 , Changelog.txt - What's new in Drupa...
• 91. Drupal Negatives and explanation on Usability,...
• 90. Explain Drupal Architecture
• 89. Drupal Version release dates
• 88. Drupal at a glance
• 87. Why you shouldn't modify core drupal files ?
• 86. Explain hardcoding in drupal ?
• 85. Explain Theming in Drupal 8 ?
• 84. Steps for launching a drupal site ?
• 83. Explain drupal administration
• 82. How to configure .htaccess to ignore specific ...
• 81. What are the steps for migrating drupal websit...
• 80. How to install and configure drupal 8 ?
• 79. How to Install Drupal ?
• 78. What are alpha, beta releases and release cand...
• 77. What do version numbers in drupal mean?
• 76. Explain Backward Compatibility in Drupal ?
• 75. Explain Security features of Drupal ?
• 74. What are Entity types in drupal ?
• 73. What is Bootstrap in drupal ?
• 72. What is drupal weight ?
• 71. What is triage ?
• 70. What is drupal trigger ?
• 69. What is theme and theme engine in drupal ?
• 68. What is teaser in drupal ?
• 67. What is render array in drupal ?
• 66. What is drupal region ?
• 65. What is permission in drupal ?
• 64. What is Git in drupal ?
• 63. What is DrupalCon and Druplicon ?
• 62. What is cron in drupal ?
• 61. What is critical path ?
• 60. What is clean URL in Drupal ?
• 59. What is Drupal child ?
• 58. What is drupal cache ?
• 57. What are breadcrumbs ?
• 56. What is an argument in drupal ?
• 55. What is a Base Theme in Drupal ?
• 54. What is drupal panels ?
• 53. What is drupal 8 ?
• 52. How do you convert PSD to drupal theme ?
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101. What hardware does Drupal.org run on?

People often wonder what kind of hardware drupal.org runs on. Throughout the project history this has been a tough question. For a while it was a server in a random office building. That server eventually died and required a fund-raising effort to replace (the funds were raised in 24 hours!).

The critical infrastructure is all configured to share the load and be redundant. For example, db1 and db2 are configured to be master-slave most of the time to provide for better performance and allow the slave to be promoted to master if the master fails.

Read More here https://drupal.org/node/1280436