Magus Infotech interview questions

Aptitude test consisted of logical reasoning and maths questions(basic maths : 8-12th std marks) HR round - asked about where do you live, who all in your family, what language do you prefer, your views on any current trend topic. Technical round - asked what is database, server, internet, www, big data, hadoop, .net. what makes a server a "server" ? what is in a database and in data warehouse? how do they both differ ?