Microsoft SDE intern interview questions

First, there was an online assessment followed by the interview. The interview started with an introduction and then straightway went to the projects I mentioned in my resume . How i made them , what was the procedure, difficulties , how would you improvise it in future , can you do it right now . and then about 20 minutes of discussing my project he asked me a DSA question

first was resume shortlisting round, after which I received their mail asking me to schedule an interview. yes, I took a referral and scheduled my interview 15 days later. in round 1 they asked me 2 dsa questions of medium level one from linked list and another from tree I was able to solve both. later I received a mail that I had qualified, in next round again they asked me DSA questions from graph and trees however I was not able to solve the graph problem I received a mail stating that I have not qualified.