Improving interview question

Technical interview 1 //Autowired //annotations //Rest controller //what is the difference between post and put. difference put and patch //http codes //reverse a string //why concurrent hash map. What will happen if i use normal hash map //Bean, dependency injection. // sql questions //Asked to enhance an api of the assignment //API versioning? //Explain the dockerfile you have written //Explain the base62Encoder that you have written //thought process of solving assignment Technical interview 2 explain past experience Scenario based questions on the technologies you have worked on.