Q. IPv4 and IPv6 validation in java[can't use regex so expect to write lengthy code with no test tools and no autocomplete remember all apis.] Q. From family tree, find if ancestor/sibling information?[they themself couldn't define how information is saved(so assume), no test data available, asked me to solve with dfs as well as bfs. Don't think of multiple marrage/step relationships, I was wrong in thinking it] Q: Design volume space availability service which will provide exact information on volume available.
