if you are working in a good company or have more than 5 years exp. i suggest you to stay away from this company or even don't go for interview experience, because the interviewer don't know anything . They will just waste your time. Questions they asked: 1. what is n-tier architecture and n-layer architecture. ( i have given correct answer, he said wrong then i asked what would be the correct answer? laughable... he said the view part and BAL and DAL should be hosted on different systems. then i said, after code compilation dot net creates dll files. it means dlls should be different system and html part should be on different system. then he said its web api. which i said to him earlier. every question they said wrong and even they do not have any justification for correct answer. so please avoid this company. if you give correct answer he will say wrong. 2. function overloading with null ref parameter after first question i was in dileama, why would i came here. 3. database questions basic ( delete duplicate rows etc) 4. he would have listened some keyword POCO class. This guy is a Team leader. Never join this company.