Fragen im Vorstellungsgespräch für Beschäftigung als Senior Software Engineer - Java Developer bei Netcracker Technology

Got a call from recruiter about the job opportunity. First 2 technical rounds were virtual where they mostly asked about Java concepts, dbms concepts, asked to write few codes and queries. For managerial round the called for a f2f interview. And after making me wait for 1 hr the manager and regional head came and interview started in one of the meeting rooms. It was fully technical and asked me to write code on white board.. what is the point of the first 2 rounds if again you r scheduling same thing… asked a-lot of scenarios based multithreading questions which were of no sense. Later they told they are working on a legacy monolith project so its mostly support and bug fix related work.