Firstly, the interviewer asked me to introduce myself. Then she asked me to explain OOPs concepts of JAVA. Then she went on asking questions related to abstraction, polymorphism, inheritance, final keyword, etc. Then she moved on to DBMS. She asked about normalization, ACID properties, joins, etc. She also asked about CN. Some of the questions were ISO-OSI layers, TCP/IP layers, hub, and switch difference, physical topologies, etc.