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Spring Boot Objective Questions and Answers

Test your Spring Boot skills with advanced and interview-focused MCQs. Covers auto-configuration, dependency injection, REST APIs, JPA, security, microservices, configuration, testing, and performance tuning.

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
Answered: 0 / 15

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