Ness Digital Engineering interview question

As this is for Lead Database Administrator role. Interviewer checked about the knowledge on Databases with advanced versions. Highlighted on basics and scenario-based questions. Building -2node rac culuster in 19c env Data guard exp- manulaly set up DG backup questions archive logs are not shipping issues network glich and listner status issue DB is large and backup is taking lot of time to completed- reasons to reduce the backup time to complete. Rman backup issue Data export and import issues. Monitoring the DB based on tools Versions/Rac nodes/active/passive rac configuration of rac node Mat view refresh/partitions Performance issue connectivity issues