Boeing Junior Java Developer interview questions

There were 3 rounds for me. First an online test. Then one telephonic which was technical. Then an structured interview. Online test had all topics - OOPS, Database, Spring, hibernate, javascript, struts, data structures, java, angular js. In technical interview, you have to share the screen and they ask you to write the programs. You also need to have a webcam. Questions: What makes a language object oriented? Describe all OOPS concepts. Dynamic binding vs Static binding. What is a kernel. Overloading vs Overriding. Reverse a stack in O(1) space. Spiral order traversal of a binary tree.