Interview questions-1

1. Tell me about yourself briefly ? an the project which you are currently working on Tableau ?
2. What is the size of the data extracts do you have in your project?
3. How many rows for 3.5 gb data extract means ..it will be huge right? 
4. I have a geographic field, sum(sales), I need to display the comparision between current year and previous year, And i ahve a filter on
5. quarter from 2014 Q1 thru 2015 Q1? How would you achieve it?
6. If i filter the data for 2014 q1 thru 2015 q1 then how you will display the data for all previous years?
7. When you use a calculated field, how tableau knows internally it has to compare with previous years sales? what is the tableau background process that 
8. happens in this scenario?
9. How do you create a calculated field to compare the current year with previous year? What function you use to do it?
10. Can i have a dynamic values in parameters? 
11. I have a dashboard with 5 views in it and when i select the dropdown list and select one view it should display that view alone. How to do that?
12. When you will use ATTR function?
13. I have a region . discounts and product heirarchies ..which one you will choose to have a context filter?
14. Say i have used two context filters and how Tableau knows that it will create first one yuo choosed and based on that the second context filter to act?
15. Have you worked on the server side?
16. Do you have any questions for me?
17. how do you check the performance of the dashboard?what you will do to improve the performance?
18. what are the different functions available while creating a calculated field?