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VMware Professional Develop VMware Spring Sample Questions (Q27-Q32):
NEW QUESTION # 27
Which two statements are true regarding @DataJpaTest? (Choose two.)
- A. If an embedded database is on the classpath, it will be used to configure a DataSource by default.
- B. It can be used for testing both JPA components and NoSQL components.
- C. TestEntityManager provides all methods that are provided by EntityManager and more.
- D. It can be used for testing JdbcTemplate.
- E. It auto-configures a TestEntityManager bean.
Answer: A,E
Explanation:
B . If an embedded database is on the classpath, it will be used to configure a DataSource by default.
This is true because the @DataJpaTest annotation enables auto-configuration of an embedded database if one is available on the classpath, such as H2, HSQLDB, or Derby. This allows the test to run with a temporary and isolated database that can be configured with test data.
D . It auto-configures a TestEntityManager bean.
This is true because the @DataJpaTest annotation provides a TestEntityManager bean that can be used to perform common JPA operations in the test. The TestEntityManager is an alternative to the standard EntityManager that provides some convenience methods and exception translation.
NEW QUESTION # 28
Refer to the exhibit.
What is the id/name of the declared bean in this Java configuration class? (Choose the best answer.)
- A. ClientService (starting with uppercase "C")
- B. clientServiceImpl (starting with uppercase "C")
- C. clientServiceImpl (starting with lowercase "c")
- D. clientService (starting with lowercase "c")
Answer: D
Explanation:
This is true because the id/name of a bean declared by the @Bean annotation is derived from the name of the method that returns the bean. In this case, the method name is clientService, so the bean name will be clientService as well. By default, Spring uses a lower-case first letter for bean names, unless explicitly specified otherwise by using the name attribute of the @Bean annotation. For example, we can use @Bean(name = "ClientService") to change the bean name to ClientService (starting with uppercase "C").
NEW QUESTION # 29
Which two options are REST principles? (Choose two.)
- A. RESTful applications use a stateless architecture.
- B. RESTful applications favor tight coupling between the clients and the servers.
- C. RESTful application servers keep track of the client state.
- D. RESTful application use HTTP headers and status codes as a contract with the clients.
- E. RESTful applications cannot use caching.
Answer: A,D
NEW QUESTION # 30
Refer to the exhibit.
Which two statements are correct regarding the HelloAutoConfig auto-configuration class when it is specified in the META-INF/spring.factories file? (Choose two.)
- A. A HelloService bean will be created from the helloService() method and will replace existing a HelloService bean in the ApplicationContext.
- B. This auto-configuration class is used only when the HelloService.class is not on the classpath.
- C. A HelloService bean will be created from the helloService() method only when there is no other HelloService bean in the ApplicationContext.
- D. This auto-configuration class is used only when the HelloService.class is on the classpath.
- E. A HelloService bean will be created from the helloService() method even if the HelloService.class is not in the classpath.
Answer: C,D
Explanation:
B . A HelloService bean will be created from the helloService() method only when there is no other HelloService bean in the ApplicationContext.
This is true because the @ConditionalOnMissingBean annotation on the helloService() method indicates that this method will only be invoked to create a HelloService bean if there is no existing HelloService bean in the application context. This is a common way to provide a default bean that can be overridden by the user's own bean definition.
D . This auto-configuration class is used only when the HelloService.class is on the classpath.
This is true because the @ConditionalOnClass annotation on the HelloAutoConfig class indicates that this class will only be loaded and processed by Spring Boot if the HelloService.class is present on the classpath. This is a common way to enable auto-configuration for a specific library or feature only when it is available.
NEW QUESTION # 31
Which following statements are true about Spring Data? (Choose two.)
- A. Spring Data is specifically designed for JPA, JDBC, and relational database access only.
- B. Spring Data implementations exist for many data storage types, such as MongoDB, Neo4j, and Redis.
- C. Spring Data cannot be used together with Spring MVC.
- D. Spring Data works by applying the JPA annotations to data stores such as MongoDB, Neo4j, and Redis.
- E. Spring Data can greatly reduce the amount of "boilerplate" code typically needed for data access.
Answer: B,E
Explanation:
Spring Data MongoDB https://spring.io/projects/spring-data-mongodb . Spring Data Neo4j https://spring.io/projects/spring-data-neo4j Spring Data Redis https://spring.io/projects/spring-data-redis For example: Spring Data Envers Optional<T> findById(ID primaryKey);
NEW QUESTION # 32
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