LinkedIn Spring Framework Skill Assessment

LinkedIn Spring Framework Exam Answers 2024

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What is component scanning?

• a feature that scans packages for classes with specific annotations and, when found, creates their bean definitions within the IoC container
• a method by which binary data in a database is searched to identify components for injection into the IoC container
• a method by which cloud repositories are scanned to identify components for injection into an IoC container
• a paradigm where bytecode is actively scanned to identify additional optimizations to inject into components in the application context

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How are authentication and authorization different?

• Authentication is the act of granting access to specific resources and functions based on config settings. Authorization is the act of introspecting a user’s credentials to ensure they are not impersonating another user.
• Authentication is the act of verifying that certain resources and functions actually exist in the database. Authorization is the act of verifying a user’s credentials to ensure they are valid.
• Authentication is the act of verifying certain resources and functions are actually valid. Authorization is the act of verifying a user’s credentials have not expired.
• Authentication is validating that users are who they claim to be. Authorization is granting access to specific resources and functions.

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What is the purpose of the @Lazy annotation and why would you use it?

• It can be applied to a bean so that the bean is not persisted in the database. It reduces the number of database operations.
• It prevents a bean from being created and injected until you run a specific CLI command. It reduces complexity in the application.
• It prevents a bean from being created and injected until it receives a HTTP request to a callback hook. It reduces disk footprint.
• It can be applied to a bean so that the bean is not created and injected until it is needed. It can help speed up startup time for your application.

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What is the name of the central servlet that dispatches requests to controllers?

• Router
• DispatchingDelegatorServlet
• DispatcherServlet
• FrontControllerServlet

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What does @SpringBootApplication do?

• This compound annotation applies the @Bootable, @Springify, and @StandardConfig annotations that launch a CLI tool after launching the Spring Boot WAR file that will guide you through a series of prompts to set up your app.
• This annotation takes the String literal passed into the annotation as a parameter and automatically generates all the code for your application as per the passed in template parameter.
• This composite annotation—which includes @Configuration, @EnableAutoConfiguration, and @ComponentScan—triggers autoconfiguration of Spring and component scanning in the base package for components to add to the application context.
• This annotation scans the provided spring-boot-config-construction.yaml file in your root directory and automatically generates all the code for your application as defined in the YAML file.

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   Spring Framework linkedin assessment answers