Cisco Intern Software Engineer interview questions

The first round was a combo of aptitude and coding. Coding questions were two, one was easy and one was hard. The hard question is what I'll be talking about. The other two rounds were technical and dealt with both coding questions as well as computer science subjects ranging from OS, CN to DBMS, OOPS Had a good discussion on all these and stressed on few ML parts too. Last round was the HR round.