for caliper test, you must not give extreme ends answers (eg 1 or 10 rating) in personality trait questions. Otherwise it makes personal profiling invalid. For the cognitive section, you need to find ways to practice figural analogy, figural series, figural matrices and number series. The cognitive test is time consuming.
as for the interview, knowing the track that you applied is much more important than knowing the company and financial institution. For example I only applied cloud computing and its ideal to have hands on practice with public cloud such as aws, azure or gcp. on a general level, best to have some knowledge on linux systems, networking layer, security and some database knowledge. It may be overwhelming, but you need to find a way to know as much as possible before interview.