Ribbon Communications Software Developer interview questions

Basically its a telecom company they are looking for the candidate who is good in c ,cpp,python and data structures .They asked more on the ds and cpp only.The total 3 rounds are there one is conducted virtual and Technical/mangerial round need to attend F2F in their office location.

We had an exam in round 1 with total 7 leetcode questions 3medium 4 easy after clearing it 1 tech had questions on resume and oops osi model deep copy and shallow copy and 1DSA question after that 2 tech round is again about DSA and C language with pointers and computer networks