Had three one-on-one interviews with different members of the same team. The first one was asking C questions, second was Java questions, third was SQL. Mostly generic entry-level questions (talk about inheritance, foreign keys, etc). Also was given a brief written test in C and Java (30 min each). The Java test was based around a few classes with inheritance (Pet interface, cat class, dog class). Determine what properties transfer, etc. Some basic questions about Spring/Hibernate and general OOP.

What is the binary representation of -1 in 2's complement?