Spring Boot Objective Questions and Answers

Test your Spring Boot skills with carefully curated MCQs designed for real-world development and interview preparation. Focused on configuration, REST APIs, data access, security, and production-ready applications.

Practice Spring Boot MCQs with Detailed Explanations

Answer at least 12 questions to submit and verify answers.

1 What is the primary purpose of Spring Boot auto-configuration? Medium

2 Which annotation is responsible for enabling component scanning in Spring Boot? Medium

3 What happens if two beans of the same type exist and no qualifier is specified? Medium

4 Which embedded server is used by default in Spring Boot? Easy

5 Which annotation is used to bind external configuration properties to a POJO? Medium

6 What is the default scope of a Spring bean? Easy

7 Which HTTP status code is returned by default for a successful POST request? Medium

8 Which annotation is used to handle exceptions globally in REST controllers? Medium

9 What is the role of application.properties or application.yml? Medium

10 Which annotation is mandatory for a Spring Boot main class? Easy

11 What does @RestController combine? Medium

12 Which JPA method retrieves data lazily by default? Hard

13 What is the default transaction propagation behavior? Hard

14 Which annotation enables Spring Security in a Boot application? Medium

15 What will happen if spring.datasource.url is missing? Medium