Tata Consultancy Services Java Senior Developer interview questions

2 Rounds 1. Technical Interview 2. HM round interview process was simple. Interviewer was friendly. Question asked on Java 8, Hibernate, Springboot, Spring security and design patterns in Microservices. Asked more question on git and CI/CD.

What are the key differences between Spring Boot and Spring Framework? How does Spring Boot auto-configuration work? What is the purpose of the @SpringBootApplication annotation? How do you create and configure a custom starter in Spring Boot? What is the difference between @Component, @Service, and @Repository? How does dependency injection work in Spring Boot? What are the different scopes available for Spring Beans? How do you handle exceptions globally in Spring Boot? What is the difference between @RestController and @Controller? How does Spring Boot manage database connections? What is the role of application.properties or application.yml in Spring Boot? How do you implement pagination and sorting in Spring Data JPA? What is the difference between JpaRepository and CrudRepository? How do you enable CORS in a Spring Boot application? How does Spring Boot handle security, and what is Spring Security? What is OAuth2, and how do you implement it in Spring Boot? How does Spring Boot support microservices architecture? What are circuit breakers, and how do you implement them in Spring Boot?