Deutsche Bank is based in Frankfurt and operates as a global universal bank. Its Investment Bank includes Fixed Income and Currencies, commonly called FIC, as well as Origination and Advisory. That mix gives you a clear reason to discuss both strategic advice and financing instead of describing the firm as a pure merger advisory boutique.
Expect interviewers to care about why Deutsche Bank specifically, not simply why investment banking. Strong answers can reference its European roots, international corporate relationships, financing capabilities, and connections with the Corporate Bank. Interview experiences vary by office and group, but qualitative questions often receive more attention than calculation-heavy exercises.