In the context of Global Method Security, how can custom permission evaluators be integrated to extend the functionality of method security expressions?

  • By using @CustomEvaluator annotation
  • By implementing the PermissionEvaluator interface
  • By setting useCustomEvaluators property to true in XML configuration
  • By adding a customEvaluators bean in the application context
Custom permission evaluators can be integrated by implementing the PermissionEvaluator interface. You need to provide your custom logic for evaluating permissions, and then configure Spring to use your custom evaluator in security expressions.

To customize the way method parameters are bound to web requests in Spring Boot, you can use the @_____ annotation.

  • @RequestParam
  • @Request
  • @RequestParameter
  • @RequestParamBinding
To customize the way method parameters are bound to web requests in Spring Boot, you can use the @RequestParam annotation. This annotation allows you to specify how request parameters are mapped to method parameters in your controller methods. It provides options for customizing the binding process to suit your application's needs.

To apply data migration scripts in Spring Boot, you can use tools like _____ or _____.

  • DBMigrate
  • Flyway
  • Liquibase
  • SpringMigrate
In Spring Boot, you can use tools like Flyway or Liquibase to apply data migration scripts. These tools help manage database schema changes and versioning, ensuring that your application's database is kept in sync with the evolving data structure required by your application's code. The choice between these tools often depends on your team's preferences and project requirements.

Which annotation in Spring is used to automate the wiring of bean dependencies?

  • @Autowired
  • @Bean
  • @Configuration
  • @Inject
In Spring, the @Autowired annotation is used to automate the wiring of bean dependencies. When applied to fields, constructors, or methods, it allows Spring to automatically inject the appropriate beans or dependencies, making the code more readable and reducing the need for manual wiring.

When testing RESTful APIs in Spring Boot, which utility would you prefer to use for simulating HTTP requests?

  • HttpRequest
  • HttpSimulator
  • MockMvc
  • RestClient
In Spring Boot, MockMvc is commonly used for simulating HTTP requests when testing RESTful APIs. It provides a powerful and expressive API for testing Spring MVC controllers.

For creating custom auto-configuration in Spring Boot, the configuration class needs to be listed in the _____ file.

  • META-INF/application-context.xml
  • META-INF/spring.factories
  • application.properties
  • application.yaml
When creating custom auto-configuration in Spring Boot, the configuration class needs to be listed in the META-INF/spring.factories file. This file is used to declare the mapping between auto-configuration classes and their associated configurations. Spring Boot scans this file during application startup and automatically applies the configurations specified for your custom auto-configuration.

For configuring a DataSource programmatically in Spring Boot, you can create a @Bean of type _____.

  • javax.sql.DataSource
  • org.springframework.boot.datasource.DataSource
  • org.springframework.jdbc.datasource.DataSource
  • spring.datasource
To configure a DataSource programmatically in Spring Boot, you can create a @Bean of type javax.sql.DataSource or its Spring-specific equivalents. This allows you to define the data source properties and configure database connectivity in your application. The choice of the correct data source bean is crucial for proper database interaction in your Spring Boot application.

In a microservices architecture using Spring Boot, how would you implement a shared cache to ensure that different services have access to the same cached data, maintaining consistency?

  • Implement a separate cache instance for each microservice to ensure isolation.
  • Use a distributed caching solution like Redis or Memcached and configure it as a shared cache.
  • Use HTTP-based caching mechanisms to share data between microservices.
  • Use an in-memory cache within each microservice for simplicity.
To maintain consistency and share cached data in a microservices architecture, using a distributed caching solution like Redis or Memcached is a common approach. This ensures that different services can access the same cache, improving consistency. The other options, such as separate cache instances or in-memory caches per microservice, do not provide the same level of shared, consistent caching.

What considerations should be taken into account when choosing between Flyway and Liquibase for a large-scale, complex Spring Boot application?

  • Compatibility with your database and ORM framework.
  • Licensing cost of the migration tool.
  • Popularity and community support.
  • Whether the tool supports NoSQL databases.
When choosing between Flyway and Liquibase for a large-scale, complex Spring Boot application, you should consider compatibility with your database and ORM framework. Both tools have strengths and weaknesses, so selecting the one that aligns with your technology stack is crucial. Popularity and community support can also be important, but they should not be the sole determining factors. Licensing cost and NoSQL support may be relevant but typically have less impact on the decision.

To enable method-level security in Spring Security, the _____ annotation must be added to the configuration class.

  • @Autowired
  • @EnableGlobalMethodSecurity
  • @PreAuthorize
  • @Secured
To enable method-level security in Spring Security, the @EnableGlobalMethodSecurity annotation must be added to the configuration class. This annotation allows you to use method-level security annotations like @PreAuthorize, @Secured, and others to control access to specific methods in your application. It's a crucial step in implementing fine-grained security control.