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.

58. What is drupal cache ?

The core Drupal cache stores assembled pages and blocks for anonymous visitors in the cache tables in the database. Other popular Drupal caching options include boost,memcache, and authcache.

57. What are breadcrumbs ?

The set of links, usually near the top of the page, that shows the path you followed to locate the current page. For example, it might show Home > Drupal > Current Events > News Articles, meaning that you started at the home page, clicked on “Drupal” in the menu, then selected “Current Events” in the sub-menu, and finally selected, “News Articles.” The term breadcrumbs is borrowed from Hansel and Gretel, who left crumbs of bread along their path so they could find their way back out of the forest.

56. What is an argument in drupal ?

A section of the path for a page on a Drupal website. In the path /node/937 the first argument is “node”, and the second is “937”. Some modules, most notably Views, allow the use of “wildcard” arguments that allow a particular page to vary depending on context.