Pass the VMware VCP-AM Develop 2022 2V0-72.22 Questions and answers with CertsForce

The @Value annotation can be used to inject values from external sources into fields, constructor parameters, or method parameters. To inject a system property, the annotation can use either the ${…} placeholder syntax or the #{…} SpEL expression syntax. The former is simpler and more concise, while the latter is more powerful and flexible. Both syntaxes can access the systemProperties map, which contains all the system properties as key-value pairs.

Constructor injection is one of the ways to inject dependencies into a bean using its constructor parameters. Since Spring 4.3, if a bean has only one constructor, the @Autowired annotation can be omitted and Spring will use that constructor by default.

Constructor injection is generally recommended over field injection because it makes the dependencies of a bean explicit and immutable. It also facilitates unit testing because it allows us to easily provide mock dependencies through constructor arguments.

https://docs.spring.io/spring-security/site/docs/current/api/org/springframework/security/crypto/password/DelegatingPasswordEncoder.html

A. Allow access to a method based on user identity.

This is true because the @PreAuthorize annotation can use the principal object to access the user identity and check if it matches a certain condition. For example, we can use the following expression to allow access only to the user with the username “admin”:

@PreAuthorize(“principal.username == ‘admin’”)

E. Allow access to a method based on roles.

This is true because the @PreAuthorize annotation can use the hasRole, hasAnyRole, or hasAuthority methods to check if the user has a certain role or authority. For example, we can use the following expression to allow access only to users who have the role “ADMIN” or “USER”:

@PreAuthorize(“hasAnyRole(‘ADMIN’, ‘USER’)”)

REST stands for Representational State Transfer, which is an architectural style for designing web services that adhere to certain principles. One of these principles is statelessness, which means that each request from a client to a server must contain all the information necessary to understand the request, and that no session state is maintained on the server side. Another principle is uniform interface, which means that clients and servers communicate using a standardized protocol, such as HTTP, and use its features, such as headers and status codes, to exchange information about the resources and their representations.