Oracle Server Technologies interview questions

First-round was Online MCQ(Apti, technical, communications). but shortlisted 105 out of 300, the worst interview experience I had, simply rejected all the students. Interviewr didnt know Bubble Sort algorithm But asked the same question, when I explained him, he was like forgot the algorithm.

The process was of five rounds 1. Online test 2 to 4 Technical rounds 5th HR round They asked about projects. Then they asked about object oriented programming. SQL. They asked one puzzle. The w questions in the process was average.