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What is the purpose of the @ManyToMany annotation in JPA? A) To map a many-to-many relationship between entities B) To map a one-to-one relationship between entities C) To configure database caching D) To define a foreign key relationship Answer: A) To map a many-to-many relationship between entities Explanation: The @ManyToMany annotation in JPA is used […]

What does the @OneToMany annotation represent in JPA? A) A relationship where one entity is associated with many entities B) A relationship where many entities are associated with one entity C) A relationship where one entity is associated with one other entity D) A relationship where many entities are associated with many entities Answer: A)

How do you perform pagination and sorting with Spring Data JPA? A) By using the Pageable and Sort interfaces B) By writing custom SQL queries C) By using the @Query annotation D) By using the @Pageable annotation Answer: A) By using the Pageable and Sort interfaces Explanation: Spring Data JPA provides built-in support for pagination

What is the purpose of the @Table annotation in Spring Data JPA? A) To specify the primary key column B) To map the entity to a specific database table C) To define the database schema D) To configure caching for the entity Answer: B) To map the entity to a specific database table Explanation: The

How do you define a primary key in a JPA entity class? A) By using the @Id annotation B) By using the @PrimaryKey annotation C) By using the @Column annotation D) By using the @Table annotation Answer: A) By using the @Id annotation Explanation: The @Id annotation in Spring Data JPA is used to define

What is the use of the @Entity annotation in Spring Data JPA? A) To map a Java class to a database table B) To define a primary key for the entity C) To specify a repository interface D) To indicate that a class is a Spring bean Answer: A) To map a Java class to

How do you define a query in Spring Data JPA using @Query annotation? A) By writing SQL queries directly in the @Query annotation B) By using named queries defined in the entity class C) By writing JPQL (Java Persistence Query Language) queries D) Both A and C Answer: D) Both A and C Explanation: The

What is the purpose of the JpaRepository interface in Spring Data JPA? A) To provide CRUD operations for entity classes B) To manage transactions in a Spring application C) To configure the database connection D) To map Java objects to database tables Answer: A) To provide CRUD operations for entity classes Explanation: The JpaRepository interface

What is the purpose of the @CrossOrigin annotation in Spring MVC? A) To enable Cross-Origin Resource Sharing (CORS) on specific methods or classes B) To handle cross-site scripting (XSS) attacks C) To configure internationalization (i18n) in Spring MVC D) To bind HTTP request parameters to method arguments Answer: A) To enable Cross-Origin Resource Sharing (CORS)

What does the @RequestBody annotation do in Spring MVC? A) It binds the body of an HTTP request to a method parameter B) It binds HTTP headers to a method parameter C) It binds query parameters to a method parameter D) It binds path variables to a method parameter Answer: A) It binds the body

What is the use of @RestController in Spring MVC? A) It combines @Controller and @ResponseBody annotations B) It marks a class as a RESTful controller C) It is used to create web services in Spring MVC D) All of the above Answer: D) All of the above Explanation: The @RestController annotation in Spring MVC is

What is the purpose of the @ResponseBody annotation in Spring MVC? A) To bind HTTP request parameters to method arguments B) To return the response body directly from a controller method C) To specify the HTTP status code for a response D) To handle exceptions in a Spring MVC application Answer: B) To return the

How does the @ModelAttribute annotation work in Spring MVC? A) It binds a model attribute to a method parameter B) It maps HTTP request parameters to method arguments C) It defines a model attribute for data binding D) Both A and C Answer: D) Both A and C Explanation: The @ModelAttribute annotation in Spring MVC

What is the purpose of the @RequestParam annotation in Spring MVC? A) To bind HTTP request parameters to method arguments B) To bind a URI template variable to a method parameter C) To handle exceptions in a Spring MVC application D) To inject dependencies into a controller Answer: A) To bind HTTP request parameters to

What is the purpose of the @PathVariable annotation in Spring MVC? A) To bind a URI template variable to a method parameter B) To inject dependencies into a controller C) To configure view resolvers D) To handle exceptions in a controller Answer: A) To bind a URI template variable to a method parameter Explanation: The

What is the difference between @GetMapping and @PostMapping annotations in Spring MVC? A) @GetMapping is used for HTTP GET requests, and @PostMapping is used for HTTP POST requests B) @GetMapping is used for database queries, and @PostMapping is used for data insertions C) @GetMapping is used to map URLs, and @PostMapping is used to handle

What is the role of the @RequestMapping annotation in Spring MVC? A) To map web requests to specific handler methods B) To define beans in the Spring context C) To configure database connections D) To initialize Spring Boot applications Answer: A) To map web requests to specific handler methods Explanation: The @RequestMapping annotation in Spring

What is the purpose of the @Controller annotation in Spring MVC? A) To define a Spring bean B) To indicate that a class serves as a web controller C) To handle exceptions in a Spring application D) To enable component scanning Answer: B) To indicate that a class serves as a web controller Explanation: The

How do you configure logging in a Spring Boot application? A) By adding a logback.xml or log4j2.xml file in the classpath B) By setting logging properties in application.properties C) By adding a logging dependency like Logback or Log4j2 D) All of the above Answer: D) All of the above Explanation: Logging in a Spring Boot

What is the purpose of @RestControllerAdvice in Spring Boot? A) To handle exceptions for REST controllers globally B) To configure REST endpoints C) To apply caching for REST controllers D) To configure security for REST endpoints Answer: A) To handle exceptions for REST controllers globally Explanation: The @RestControllerAdvice annotation in Spring Boot is used to

How do you integrate Spring Boot with a NoSQL database like MongoDB? A) By using the spring-boot-starter-data-mongodb dependency B) By manually configuring the MongoDB client in the application C) By using the spring-boot-starter-nosql dependency D) By using the @NoSql annotation Answer: A) By using the spring-boot-starter-data-mongodb dependency Explanation: To integrate Spring Boot with a NoSQL

What is the role of @EnableCaching in Spring Boot? A) To enable the application to cache data automatically B) To configure cache settings in application.properties C) To activate caching for specific beans or methods D) To enable caching for all beans in the application Answer: A) To enable the application to cache data automatically Explanation:

How do you implement a custom error page in Spring Boot? A) By creating an HTML file named error.html in the src/main/resources/templates directory B) By setting custom-error-page=true in application.properties C) By implementing ErrorController interface D) Both A and C Answer: D) Both A and C Explanation: In Spring Boot, you can implement a custom error

What is Spring Boot’s WebClient used for? A) To handle HTTP requests and responses in a reactive way B) To replace RestTemplate with a non-blocking client C) To perform CRUD operations with MongoDB D) Both A and B Answer: D) Both A and B Explanation: Spring Boot’s WebClient is a non-blocking, reactive client that is

How can you enable asynchronous processing in Spring Boot? A) By using the @Async annotation B) By using the @EnableAsync annotation C) By setting spring.async.enabled=true in application.properties D) Both A and B Answer: D) Both A and B Explanation: In Spring Boot, you can enable asynchronous processing by using the @EnableAsync annotation in your configuration