You have created an OpenSocial API  "test.xml" and integrated it into Google App Engine. You don't want just anybody to be able to access your application data through the "test.xml" API. What should you do in order to restrict access to the users?

Which objects are defined in the 'add' method, under 'OpenSocial.DataRequest' namespace?

What will the following code fetch for variable 'xyz' in OpenSocial for Orkut? Var xyz=gadgets.util.getUrlParameters()['gadgetId'];

When you add an application to orkut sandbox by using OpenSocial (v0.7), which type of users can add the application?

Which Roles are defined in OpenSocial API (v0.7)?

Which are compulsory for creating an OpenSocial (v0.7) application for Orkut?l API (v0.7)?

Which languages are used for integrating OpenSocial API with Google App Engine?

What do you mean by 'Activity' in OpenSocial API (v0.7)?

Which request is sent to the apiserver when an OpenSocial API wants to call the Google App Engine server for data,?

Which event handler will call this function after the API has been loaded?

In the process of integrating OpenSocial API with Google App Engine, you do not need to maintain any servers.