Spring Framework Spring Framework 5

Question 1

What is the primary purpose of Spring's BeanPostProcessor interface?

Accepted Answer

To intercept and modify beans after instantiation but before use

Answer

BeanPostProcessor allows custom logic to run before and after Spring initializes each bean, enabling proxying and annotation processing.

Question 2

In Spring Security, which filter is responsible for processing form-based login submissions?

Accepted Answer

UsernamePasswordAuthenticationFilter

Answer

UsernamePasswordAuthenticationFilter intercepts POST requests to the login URL and delegates authentication to the AuthenticationManager.

Question 3

Which annotation enables Spring's caching abstraction, allowing methods to cache their return values?

Accepted Answer

@EnableCaching

Answer

@EnableCaching activates Spring's annotation-driven cache management, enabling @Cacheable, @CachePut, and @CacheEvict.

Question 4

What does the @Async annotation do when applied to a Spring bean method?

Accepted Answer

Executes the method in a separate thread from the caller

Answer

@Async causes Spring to submit the method call to a TaskExecutor, running it asynchronously so the caller does not block.

Question 5

What is a Spring Boot 'starter' dependency?

Accepted Answer

A curated set of dependencies that simplify adding a feature to your project

Answer

Starters are convenience dependency descriptors (e.g., spring-boot-starter-web) that pull in all required libraries for a feature with compatible versions.

Spring Framework Practice Test

Spring Framework Practice Test

Spring Framework Spring Framework 5