Cognos Interview Qs

I was going thru Cognos Forum yesterday. Some of the Cognos Interview Qs- below (which i found in the forum)

1. what is mean by lookup command? where we use it?
2. what is mean by RCD.
3. how to provide security in Framework manager?
4. What is stitched query?
5. What is mode filters in FM?
6. What is meant by Business Key and Determinant?
7. What is ragged dimension?
8. What is the difference between Conformed and Shared dimension?
9. What is the difference between business key, member key and member caption?
10. What is layout component reference?
11. what is report expression
12. which web server u r using?
13. how many documents u have prepared?
14. Performance tuning of a report & also database tuning?
15. Can we create any folder(we have public & my folder),& how?
16. where will be report will be saved.& how will submit to the end user?
17. if any errors occurred what u will do?& to whom u will report?