Spring boot

Question 1

What is the primary purpose of Spring Boot?

Answer 1

Simplified Spring application setup.
(Exp.: While Spring Boot can be used in various contexts like microservice development, its chief aim is to streamline the configuration and deployment of Spring applications.)

Question 2

Which embedded server does Spring Boot provide by default for web applications?

Answer 2

Apache Tomcat
(Exp.: Spring Boot offers an embedded Apache Tomcat server out of the box, allowing web applications to be easily run without external server setups.)

Question 3

What role do “starters” play in Spring Boot?

Answer 3

They provide a set of default dependencies for specific tasks.

Question 3

Which file format cannot be used to configure properties in Spring Boot?

Answer 3

.json

Question 4

Which annotation activates Spring Boot’s auto-configuration?

Answer 4

@SpringBootApplication
(Exp.: The @SpringBootApplication annotation encompasses several annotations, including @EnableAutoConfiguration, which activates Spring Boot’s auto-configuration feature.)

Question 5

How does Spring Boot decide whether to autoconfigure a specific feature?

Answer 5

Based on classes available in the classpath

Question 6

What does Actuator in Spring Boot provide?

Answer 6

Production-ready features like health checks and metrics

Question 7

To externalize Spring Boot’s configuration, where can properties be specified?

Answer 7

application.properties

Question 8

What is the purpose of spring-boot-starter-parent?

Answer 8

It provides useful Maven defaults.

Question 9

How can you specify a specific port number for your Spring Boot application?

Answer 9

By adding server.port= in the application.properties file

Question 10

What is the primary advantage of using Spring Boot?

Answer 10

Rapid Development

Question 11

How does Spring Boot simplify database configurations?

Answer 11

By using conventions for data source URLs and drivers
(Exp.: Spring Boot uses convention over configuration, which means it provides sensible defaults (e.g., default data source URLs and drivers) but allows them to be overridden if needed.)

Question 12

Which of these is a benefit of using Spring Boot?

Answer 12

Reduces boilerplate code

Question 13

What is the primary purpose of @SpringBootApplication annotation?

Answer 13

A combination of component scanning, autoconfiguration, and Spring Boot’s configuration.
(Exp.: @SpringBootApplication is a convenience annotation that includes @Configuration, @EnableAutoConfiguration, and @ComponentScan.)

Question 14

Which annotation is specifically used to indicate that a class provides Bean definitions?

Answer 14

@Configuration

Question 15

What is the primary function of @Conditional annotation in Spring Boot?

Answer 15

To specify that a component should only be configured under specific circumstances

Question 16

Which Spring annotation is used to create RESTful web services using Spring MVC?

Answer 16

@RestController

Question 17

Which Spring annotation is used to handle HTTP POST requests?

Answer 17

@PostMapping

Question 18

Which starter dependency is used to develop web applications or Restful web services?

Answer 18

spring-boot-starter-web