Lumen Technical Leader interview questions

Asked basic informatica question, dataware house concepts,daily routine job, error in informatica and other ETL tools worked and oracle database. asked to write the oracle queries and how we will do performance tuning in informatica mapping

There was some pre-telephonic interview , followed by 2 technical round( tech leads took the interview) and manager round , followed with HR. Interviews were scheduled and not walk in ones so the panel had enough time to focus on the interview instead of just running through candidates