Which of the following Backbone.js options is used for providing the ability to undo previous changes and triggering the events when there are unsaved changes?

Which of the following Backbone.js model methods is used for determining the previous value of the changed attribute?

Which of the following options is NOT a correct feature of Backbone.js?

While creating routes manually using Backbone.js, how many parameters can be passed to the route function?

In relation to Grunt plugin QUint task configuration options, which of the following options is the default value of timeout option?

In relation to UglinyS task configuration options, which of the following Options is the default value of report option?

____ gives a direct reference to the attributes and you should be careful when playing with it. Best practice would suggest that you use .set() to edit attributes of a model to take advantage of backbone listeners?

Backbone.sync is a _____ to synchronize your collections and models across the systems?

The architecture of Backbone.js contains the following modules?

Which of the following method is enables History API?

Underscore is primarily used for its utility __ and json2.js?