IBM Websphere commerce server(WCS) interview question in Sapient date 30.04.2013 | IBM WCS Interview Question in MNC Software Company 2013

I have attended interview of Company Sapient last week for IBM WCS developer they have asked following interview question below

1. Explain Catalog data model in WCS
2. Difference between controller command and task command 
3. Write Hello world in WCS programming model
4. Explain Data bean type.
5. Jsp tag in WCS
6. Sales catalog master catalog
7. Define excepion in IBM WCS.
8. Explain control command mehods.
9. Explian order flow.
10. Can two main() method in java class
11. Difference between HashMap and HashTable.
12  implicit object in JSP.