Spring Boot is a popular Java-based open-source framework designed and developed by Pivotal. It is used to create standalone and production-grade applications with minimum configuration and setup. Spring Boot is a framework that helps developers to create web applications quickly and easily. It is designed to simplify the process of application development by providing a set of tools and pre-configured settings that allow developers to get started with their projects in no time. Here are some common topics that might be covered in a Spring Boot interview questions:

1. What is Spring Boot?
2. What are the advantages of using Spring Boot?
3. How does Spring Boot auto-configuration work?
4. What is the difference between JAR and WAR packaging in Spring Boot?
5. Can you explain the Spring Boot starter pom.xml file?
6. What is the purpose of the @RestController annotation?
7. What are the different ways to configure properties in Spring Boot?
8. How does Spring Boot use application.properties or application.yml files?
9. What is the purpose of the @Autowired annotation in Spring Boot?
10. How does Spring Boot handle security and authentication?
11. How do you deploy a Spring Boot application?
12. Can you explain the differences between Spring Boot and Spring MVC?
13. How does Spring Boot handle database connections?
14. What is Spring Boot Actuator?
15. How does Spring Boot support caching and caching providers?
16. What is the difference between @Component, @Service, @Repository, and @Controller annotations?
17. How does Spring Boot support microservices architecture?
18. Can you explain the Spring Boot DevTools?
19. What are the different types of data sources supported by Spring Boot?
20. Can you explain the difference between @PathVariable and @RequestParam annotations in Spring Boot?
21. What are the benefits of using Spring Boot?
22. How do you create a Spring Boot application?
23. What is an embedded container in Spring Boot?
24. What is Spring Boot Actuator?
25. What is Spring Boot Starters?
26. What is the difference between @Controller and @RestController in Spring Boot?
27. How do you configure database connection in Spring Boot?
28. What is Spring Boot DevTools?
29. What is Spring Boot auto-configuration?
30. How do you customize Spring Boot auto-configuration?
31. What is Spring Boot CommandLineRunner?
32. What is Spring Boot Test?

In addition to these topics, the interviewer may ask some coding questions to test your skills in Spring Boot development. It is important to have a good understanding of Spring Boot concepts and be able to apply them to solve real-world problems.