What is the name of the method on an Ext.data.store that synchronizes the records in the store with a remote data source?

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

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

Why would a developer use a Pager?

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

What is theme inheritance?

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

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

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

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

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