1 round they will ask about your basic working details and in 2 nd round they will ask networking question like TCP /IP model.Ask about different network switch working. Question related to IMAP and pop 3

2 round processs in the interview selection,one day process,interview taken by Managers first is HR round second is Technical round both are easy, communication is important in interview,you should know OSI andTCP/IP. topology LAN MAN WANyou should know