How is Ext JS licensed?

What object render itself to the document body?

Which of the following is not an Ext layout type?

What is the name of the Ext utility function to convert a JSON string into an object?

Which of the following is NOT a valid way to add an event listener to an Ext.Panel?

What is the name of the control in Ext, that will create a control similar to an html <select>?

The ______ validation verifies if the given value matches the given regular expression.

What is the method to instantiate a class in ExtJS 4.*?

What is the root class for all Ext classes?

Linking Models: There are two types of Associations between Models: belongsTo and hasMany. But one represents a one to many ralationship between two models.

Which of the following is a required config option for grid panel?