How did you find the last n lines of log file ? and if given more time how would you do it efficiently ?

Questions on a personal project and what if we do a change how will you handle it.

What is callback hell in Node.js and how to avoid it

What is Map reduce algorithm?

What is promise chaining in Nodejs

What is Deadlock? How to avoid it?

How data has been stored inside DBMS?

Detailed discussion on my previous round's working code.

Why are multiple inheritances not supported by the Java language

Why cannot private methods be overridden?