Dynamics Ax/Axapta Interview Questions

QUESTIONS:

1. In Ax, what exactly are the thin-client and Fat-Client?

2. When exactly should we code in modifiedField() and modified() methods ?

3. I want to shutDown AoS and then restart AOS cuz i think my .auc and .alc files are corrupt.

How to shutDown the AoS service? 

ANSWERS:

1)  In thin client configuration,  all processing occurs at the AOS and AOS then communicates directly with the DB server where fat client is more 'client-centric' and is used as a batch server (it saves server's performance )

2) modified is a boolean method returns true when field value is changed (like after selecting a record from the lookup) whilst modifiedField is void method used to initialize fields

3) You should stop/restarthe service directly on the server within the services