Microsoft Software Development Engineer interview questions

1. Data structure and Algorithmic questions.(mostly you find on GFG ) 2. OS concepts, DBMS 3. no question on networking 4. few design questions i) find the no. of connected components in a undirected graph. ii) generate all valid parenthesis using n open and close braces iii) Question on prime no. generation and processing. iv) process in OS ( full details) v) a design question on college student management system and few queries on them.

How do you test a function that receives two paths of files (strings) and copies the file specified in the first one to the second path.