Question:How to add external javascript in YII? 

Yii has a special class named CClientScript that can help include scripts, CSS, and other resources in the page.
In order to include an external JS , you can use the following code:
Yii::app()->clientScript-> registerScriptFile('http://example.com/js/main.js);

Question:Name the configuration file in YII and where it is located? 

The name of configuration file is main.php and it is located in protected/config/main.

Question:Name the configuration file in YII and where it is located? 

The name of configuration file is main.php and it is located in protected/config/main.

Question:How to activate mysql database driver in yii and in which file you have to work? 

We can active MySql database driver in YII by this way:
'connectionString' => 'mysql:host=localhost;dbname=yii_sir',
'username' => 'root',
'password' => '',
and we have to work on  protected/config/ database.php

Question:How to import custom classes in yii? 

We can import custom classes in YII by following way:
<?php Yii::import(“application.Something.Animal/MountDuck”); ?>

Question:Discuss the path aliases in YII? 

Yii uses path aliases extensively. A path alias is associated with a directory or file path.       It is specified in dot syntax, similar to that of widely adopted namespace format: RootAlias.path.to.target                                                                                                               Link: http://www.yiiframework.com/doc/guide/1.0/en/basics.namespace

Question:Name the application types bundled with YII. 

There are two application types bundled with Yii which are as follows:                                             
1. Web application (CWebApplication)       
2.  Console application (CconsoleApplication)            
Both are extended from CApplication, so both console and web applications are sharing its components

Question:Name five important component names in YII.\ 

1.	coreMessages
2.	db
3.	messages
4.	errorHandler
5.	cache
6.	format

Question:classes Name some YII core collection. 

1.	Lists: CList, CtypedList
2.	 Maps: Cmap, CattributeCollection
3.	 Queue: Cqueue
4.	Stack: Cstack

Question:How can you configure URL rules in YII? 

To configure URL rules we have to  add the below to our rules in protected/config/main.php:
'home' => 'site/index',
'page/<alias>' => 'site/page',
Save the above changes and browse the following URLs:
 /home
/page/test	
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