Oracle Software Engineer interview questions

on campus dsa round(one graph-based questions+15 mcq about os,network,dbms,Linux) round 1:asked explain B+ tree insertion,one dsa question about anagrams, and something related to the project round 2:asked system design, given a specific case and asked to design,2 DSA questions about backtracking and dynamic programming, resume and projects, etc

Online assessment consisted of core subject mcqs and 2 coding questions, which was different for everyone. In the first interview round initially he asked me about my research project then gave one graph based dsa question . I don't have to code. After that interviewer asked me about basic core subject questions.