Spring Boot Quiz (Beginner) - All Questions

This Spring Boot beginner quiz helps you understand core Spring Boot concepts, auto-configuration, annotations, and application setup. Ideal for freshers, students, and developers starting with Spring Boot for interviews and real-world projects.

Question 1: What is Spring Boot mainly used for?

Frontend development
Building standalone Spring applications
Mobile app development
Game development

Explanation: Spring Boot simplifies building standalone, production-ready Spring applications.

Question 2: Which annotation is used to start a Spring Boot application?

@EnableSpring
@SpringApplication
@SpringBootApplication
@BootApp

Explanation: @SpringBootApplication is the main annotation to bootstrap Spring Boot apps.

Question 3: Which embedded server is used by default in Spring Boot?

Jetty
JBoss
WebLogic
Tomcat

Explanation: Spring Boot uses embedded Tomcat by default.

Question 4: What is the purpose of Spring Boot Starters?

Run applications faster
Simplify dependency management
Create databases
Enable security

Explanation: Starters group commonly used dependencies together.

Question 5: Which file is commonly used for Spring Boot configuration?

web.xml
application.properties
pom.xml
spring.xml

Explanation: application.properties is used for configuration in Spring Boot.

Question 6: What does Spring Boot auto-configuration do?

Creates UI automatically
Configures beans based on classpath
Generates database tables
Starts server manually

Explanation: Auto-configuration configures beans automatically based on dependencies.

Question 7: Which annotation enables auto-configuration?

@EnableAutoConfiguration
@AutoConfig
@SpringConfig
@EnableSpring

Explanation: @EnableAutoConfiguration enables Spring Boot auto-configuration.

Question 8: Which dependency is used to create REST APIs?

spring-boot-starter-jpa
spring-boot-starter-test
spring-boot-starter-web
spring-boot-starter-security

Explanation: spring-boot-starter-web is used for REST APIs.

Question 9: Which annotation is used to create REST controllers?

@Controller
@RestController
@Service
@Component

Explanation: @RestController is used to create RESTful controllers.

Question 10: Which annotation maps HTTP GET requests?

@RequestMapping
@GetMapping
@PostMapping
@FetchMapping

Explanation: @GetMapping maps HTTP GET requests.

Question 11: Which annotation is used to inject dependencies?

@Inject
@Autowired
@Qualifier
@Value

Explanation: @Autowired injects dependencies automatically.

Question 12: What is the default port of Spring Boot application?

3000
8000
8080
9000

Explanation: Spring Boot runs on port 8080 by default.

Question 13: Which annotation defines a Spring Bean?

@Bean
@Component
@Service
All of the above

Explanation: All listed annotations can define beans.

Question 14: Which annotation handles HTTP POST requests?

@PostMapping
@PutMapping
@RequestMapping
@CreateMapping

Explanation: @PostMapping maps HTTP POST requests.

Question 15: What does @RequestBody do?

Reads URL parameters
Reads request payload
Reads headers
Writes response

Explanation: @RequestBody binds request body to Java object.

Question 16: Which annotation is used to read URL parameters?

@PathVariable
@RequestParam
@RequestBody
@Value

Explanation: @RequestParam reads query parameters.

Question 17: Which annotation is used for database entity mapping?

@Table
@Entity
@Column
@Repository

Explanation: @Entity maps a class to a database table.

Question 18: Which Spring Boot starter is used for JPA?

spring-boot-starter-web
spring-boot-starter-data-jpa
spring-boot-starter-jdbc
spring-boot-starter-test

Explanation: spring-boot-starter-data-jpa supports JPA.

Question 19: Which annotation marks a primary key?

@Key
@Primary
@Id
@Column

Explanation: @Id marks the primary key.

Question 20: Which annotation handles DELETE requests?

@DeleteMapping
@RemoveMapping
@EraseMapping
@RequestMapping

Explanation: @DeleteMapping maps DELETE requests.

Question 21: Which HTTP method updates existing data?

GET
POST
PUT
DELETE

Explanation: PUT updates existing data.

Question 22: What is the default bean scope in Spring Boot?

prototype
request
session
singleton

Explanation: Singleton is the default scope.

Question 23: Which annotation enables scheduling?

@EnableAsync
@EnableScheduling
@Scheduled
@EnableJobs

Explanation: @EnableScheduling enables scheduled tasks.

Question 24: Which annotation schedules a task?

@Cron
@Schedule
@Scheduled
@Timer

Explanation: @Scheduled schedules task execution.

Question 25: Which annotation enables asynchronous execution?

@Async
@EnableAsync
@Parallel
@Threaded

Explanation: @EnableAsync enables async execution.

Question 26: Which annotation makes a method async?

@Async
@Background
@Thread
@Parallel

Explanation: @Async runs method asynchronously.

Question 27: Which file is used for YAML configuration?

application.yml
config.yml
spring.yml
boot.yml

Explanation: application.yml is used for YAML configuration.

Question 28: Which annotation handles global exceptions?

@ExceptionHandler
@ControllerAdvice
@ErrorHandler
@RestException

Explanation: @ControllerAdvice handles global exceptions.

Question 29: Which annotation returns HTTP status with response?

@Status
@ResponseEntity
@ResponseBody
@HttpStatus

Explanation: @ResponseEntity allows custom HTTP responses.

Question 30: Which HTTP status code means resource created?

Explanation: 201 indicates successful resource creation.

Question 31: Which annotation injects values from properties?

@Property
@Config
@Value
@Inject

Explanation: @Value injects property values.

Question 32: Which annotation defines service layer beans?

@Component
@Service
@Repository
@Controller

Explanation: @Service defines service layer beans.

Question 33: Which annotation defines repository layer beans?

@Service
@Repository
@Component
@Controller

Explanation: @Repository marks DAO classes.

Question 34: Which tool generates Spring Boot projects?

Spring Tool Suite
Spring Initializr
Maven
Gradle

Explanation: Spring Initializr generates Spring Boot projects.

Question 35: Which dependency is used for testing?

spring-boot-starter-test
spring-boot-starter-web
spring-boot-starter-jpa
spring-boot-starter-security

Explanation: spring-boot-starter-test supports testing.

Question 36: Which annotation enables JPA repositories?

@EnableJpa
@EnableRepositories
@EnableJpaRepositories
@JpaEnable

Explanation: @EnableJpaRepositories enables JPA repositories.

Question 37: Which annotation validates request data?

@Check
@Verify
@Valid
@Validate

Explanation: @Valid triggers validation.

Question 38: Which dependency supports validation?

Hibernate Validator
Jackson
JUnit
Logback

Explanation: Hibernate Validator supports bean validation.

Question 39: Which annotation enables CORS?

@EnableCORS
@CrossOrigin
@AllowOrigin
@CORS

Explanation: @CrossOrigin enables cross-origin requests.

Question 40: Which Spring Boot feature provides monitoring?

Spring Security
Spring MVC
Spring Actuator
Spring AOP

Explanation: Spring Actuator provides monitoring and metrics.

Question 41: Which actuator endpoint checks application health?

/metrics
/info
/health
/status

Explanation: /health shows application health.

Question 42: Which annotation runs code after bean initialization?

@Init
@PostConstruct
@Start
@AfterInit

Explanation: @PostConstruct runs after bean initialization.

Question 43: Which annotation runs before bean destruction?

@Destroy
@End
@PreDestroy
@Shutdown

Explanation: @PreDestroy runs before bean destruction.

Question 44: Which annotation maps PUT requests?

@PutMapping
@UpdateMapping
@EditMapping
@RequestMapping

Explanation: @PutMapping handles PUT requests.

Question 45: Which HTTP method deletes data?

GET
POST
PUT
DELETE

Explanation: DELETE removes data.

Question 46: Which annotation enables transaction management?

@EnableTx
@EnableTransactionManagement
@Transactional
@Transaction

Explanation: @EnableTransactionManagement enables transactions.

Question 47: Which annotation makes a method transactional?

@Tx
@Transaction
@Transactional
@EnableTx

Explanation: @Transactional manages transactions.

Question 48: Which build file manages Maven dependencies?

build.gradle
dependencies.xml
settings.xml
pom.xml

Explanation: pom.xml manages Maven dependencies.

Question 49: Which default logging framework is used by Spring Boot?

Log4j
SLF4J
Logback
Commons Logging

Explanation: Spring Boot uses Logback by default.

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Spring Boot Quiz (Beginner)

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