What is cron?
What is a drupal entity?
What is Drupal invoice generation?
What is aggregator module?
Explain drupal bootstrap process?
What does views do and how do you use it?
If I want to add the extra fields in registration field then what should we do?
Which PHP compatibility is used for Drupal?
What is a patch?
Explain the menu system in drupal? Purpose of menus?
Did you used the panel module? If yes then what is the use of that?
What do you mean by hooks in drupal?
How to implement hook_update_n() ?
What are views in drupal?
What is hooks in drupal and list few hooks used in your project?