Knowing != passing the interview. They are in different layers. Any cs student would know about things like the hashmap, stack, queues, linked list. You encounter those data structures everyday especially when you are doing debugging the source code.

That's still different compare to interview though because you need to explain, code, solve a question under 20-30 minutes. It's not hard if given enough time. But most people would need to practice some questions before going into those questions so that they can solve those under the time limit.