Infosys interview questions

1) can we have multliple web.config files in asp.net
2) response.expires and response.absoluteexpires
3) what is jquery
4) what is css
5) xml is a structured language and which language is associated with it
6) explain usercontrol, can we access one usercontrol in another usercontrol in same page
7) how the application(aumif) is turning into https after getting ssl certificate
8) select 2nd greatest salary from employee table
9) Trigger and it types