Hi Sarif,
as far as i concern, a person with lesser than 6 years are considered as a middle level dveloper. So he must have basics of any procedures, which always comes in terms of theorerical questions.
Its not a big deal, most of the questions which can be asked are frequently updated at portals, so please GOOGLE.
You will get a vast collection of Q/A . Read it and understand its concepts, then i wish you will able to crack any interview .
Regards
Sanjeev