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.

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