Upvote:1
Partial answer regarding the question if passport/visa is enough: No.
See European Commission, Migration and Home Affairs https://home-affairs.ec.europa.eu/system/files/2020-08/frequently_asked_questions_en.pdf
16 Do I have to present any other document at the Schengen external borders apart from my travel document with the Schengen visa?
The short-stay visa does not automatically entitle you to enter the Schengen area. At border (or during other controls) you may have to show the visa but also provide additional documentation, for example information on that you have sufficient means to cover the stay and the return trip. It is therefore recommended that you carry with you copies of the documents, which you presented when applying for the visa (e.g. letters of invitation, travel confirmations, other documents stating the purpose of your stay).
Upvote:3
You will be asked for the purpose of your visit. Beyond that the questions will be as deemed needed by the border control officer talking to you.
You may be asked all the same questions you've already answered in your visa application and interview, and you may be asked to prove your ability to provide for yourself for the duration of your visit and your intention to leave at the end of it (including explaining where you'll be staying, how you'll be paying for it, and when and how you'll be leaving).
Whether or not you'll be asked for any of that depends on a variety of factors, some determined at the initial encounter with the border agent. For example, if you look stressed or concerned (or alternatively, too chill and relaxed for a first time traveler) and give a vibe to the interviewer that you may not be truthful - expect more questions.
Remember, having a visa doesn't guarantee you the right to entry, it only guarantees you the right to approach.