Interviews follow a very specific process. At senior level there will probably be a test. This is followed by a small number of questions maybe 4 to 6 which are the same for every candidate. The answers are scored on how well they meet the description and specification. Read up on the STAR approach. It’s vital to understand that. Make sure you understand the ‘essential’ points in the job advert. There’s only one interview other than at v high level.