68. What is teaser in drupal ?

A short introductory sentence or paragraph about a piece of content that informs readers about the subject of the content. By default, the first paragraph or two of the content is used (there is a setting for how much), usually with a link to the complete node.

67. What is render array in drupal ?

Render arrays are the basic building blocks of Drupal content. In Drupal 7, render arrays provide a structured way to programmatically alter content before it is displayed. Further details can be read on the Render Arrays documentation page.

66. What is drupal region ?

Defined areas of a page where content can be placed. Basic regions include: Header, Footer, Content, Left sidebar, Right Sidebar. Different themes can define different regions so the options are often different per-site. Content is assigned to regions via blocks. They can be ordered by weight within regions to define the order in which they display.

65. What is permission in drupal ?

In Drupal, a tool for controlling access to content creation, modification and site administration at the application level. Administrators assign permissions to roles, then assign roles to users. The first user of a Drupal site (User1) automatically receives all permissions. In operating systems like UNIX, permissions are security settings restricting or allowing users to access information or perform certain functions at the operating system level. In the case of files on UNIX systems, there are three types of permissions: read, write and execute.

64. What is Git in drupal ?

A version control system used by Drupal code contributors to coordinate their individual code changes. Git records everyone’s changes to a given project in a directory tree called a git repository.

Git is a distributed version control and source code management system which Drupal development community uses to manage all the revisions of every file that makes up the Drupal system. If you are unfamiliar with Git, check out the Git reference or the official Git tutorial before reading this. There are also many handy Git cheat sheets, containing lists of commonly used commands for easy reference. Additional links can be found at the Other Git resources page.

For More details Click here https://drupal.org/node/991716

63. What is DrupalCon and Druplicon ?

DrupalCon 

The semi-annual conference dedicated to gathering Drupal practitioners. It alternates between a North American location and a European location.

Druplicon

The Drupal mascot. It is a neologism formed from joining the words “Drupal” and “icon”.

62. What is cron in drupal ?

A command scheduler that executes commands or scripts (e.g. scripts to backup a database) automatically at specified time and date intervals. Drupal uses a “cron job” to perform periodic tasks that help Drupal to run smoothly and efficiently.

61. What is critical path ?

The code that is run when serving a cached page.

60. What is clean URL in Drupal ?

A URL that does not contain code. By default, Drupal uses and generates URLs for your site’s pages that look like “http://www.example.com/?q=node/83.” By enabling clean URLs this will be rewritten to “http://www.example.com/node/83”.

59. What is Drupal child ?

Objects that can have hierarchical relationships, such as menu items, book pages, taxonomy terms and so on. A “child” menu item, for example, is nested under another menu item, which is referred to as the “parent” menu item.