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Spring Boot Objective Questions and Answers

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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.
Medium
What is the primary purpose of Spring Boot auto-configuration?
2.
Medium
Which annotation is responsible for enabling component scanning in Spring Boot?
3.
Medium
What happens if two beans of the same type exist and no qualifier is specified?
4.
Easy
Which embedded server is used by default in Spring Boot?
5.
Medium
Which annotation is used to bind external configuration properties to a POJO?
6.
Easy
What is the default scope of a Spring bean?
7.
Medium
Which HTTP status code is returned by default for a successful POST request?
8.
Medium
Which annotation is used to handle exceptions globally in REST controllers?
9.
Medium
What is the role of application.properties or application.yml?
10.
Easy
Which annotation is mandatory for a Spring Boot main class?
11.
Medium
What does @RestController combine?
12.
Hard
Which JPA method retrieves data lazily by default?
13.
Hard
What is the default transaction propagation behavior?
14.
Medium
Which annotation enables Spring Security in a Boot application?
15.
Medium
What will happen if spring.datasource.url is missing?
Answered: 0 / 15

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