Fidelity Investments Software Development Engineer (SDE) interview questions

The first round was a technical round where I was asked about stacks, queues, linked list, database, operating systems and other parameters were covered The second round was a managerial round

First round was a OA with different sections consisting of mcq,s , writing pseudocodes, and aptitiude and core subject question. 1st technicial interview round was held online, i was asked about OS,DBMS,CN,OOPS. It lasted for around 45 mins 2nd and final round was of HR, had a general discussion of what i know bt company and all.