Spring Framework Professional Standards & Competencies 2

Question 1

Which Spring annotation should a professional use to define a configuration class that replaces XML-based bean definitions?

Accepted Answer

@Configuration

Answer

@Configuration marks a class as a source of bean definitions and is processed by Spring's container at startup.

Question 2

A Spring developer needs to ensure a bean is created only when a specific property is set. Which annotation is the professional standard?

Accepted Answer

@ConditionalOnProperty

Answer

@ConditionalOnProperty (Spring Boot) registers a bean only when the specified environment property exists and matches the expected value.

Question 3

What is the recommended professional practice when injecting dependencies in Spring to make unit testing easier?

Accepted Answer

Constructor injection

Answer

Constructor injection makes dependencies explicit, supports immutability, and allows easy unit testing without a Spring context.

Question 4

A team finds multiple beans of the same type in the context. Which annotation resolves the ambiguity according to Spring best practices?

Accepted Answer

Both @Primary and @Qualifier

Answer

@Primary designates a default bean while @Qualifier targets a specific bean by name, and professionals use both depending on context.

Question 5

Which Spring module is the industry-standard choice for implementing RESTful web services in a Spring application?

Accepted Answer

Spring Web MVC

Answer

Spring Web MVC (via @RestController and @RequestMapping) is the standard approach for building REST APIs in Spring applications.

Spring Framework Practice Test