To enable grid buffering,

Which one of the following is a valid way to get DOM elements using Ext?

What is the default value of the hideMode option for Ext.grid.column.Column?

Which one of the following layout types is used for forms that have controls with labels above them laid out vertically?

The ________ validation varifies is the value is present (0(zero) is a valid value,but an empty string is not).

What is the proper syntax to set up global theme variables in Ext?

What is theme inheritance?

With Sandbox mode you can run Extjs 4 alongside with previous versions of Extjs on the same page.

Why would a developer use a Pager?

Extjs 4 introduces a new package organization and that is why some classes names are not the same as they were in Extjs 3.

True or false? Ext Js supports all major web browsers including: IE 6+,Firefox 1.5+(Pc,Mac),Safari 3+,Opera9+(Pc,Mac).