Spring Framework Technology & Digital Applications 4

Question 1

Which Spring Cloud Netflix component acts as an API gateway and edge server?

Accepted Answer

Zuul

Answer

Zuul is Netflix's edge service that provides dynamic routing, monitoring, resiliency, and security at the API gateway layer.

Question 2

What is the function of the @SpringBootTest annotation?

Accepted Answer

Loads the full application context for integration testing

Answer

@SpringBootTest bootstraps the full application context (or a slice of it) for integration tests, simulating the real runtime environment.

Question 3

In Spring's reactive stack, what does the Mono type represent?

Accepted Answer

A single asynchronous value or empty result (0 or 1 items)

Answer

Mono is Project Reactor's publisher for at most one item, analogous to CompletableFuture but composable and non-blocking.

Question 4

Which Spring annotation combines @Controller and @ResponseBody?

Accepted Answer

@RestController

Answer

@RestController is a convenience annotation that applies @Controller and @ResponseBody to every handler method in the class.

Question 5

What is the purpose of the @Profile annotation in Spring?

Accepted Answer

Activates beans only when a specified environment profile is active

Answer

@Profile allows beans to be conditionally registered based on which Spring profiles (e.g., 'dev', 'prod') are active at runtime.

Spring Framework Practice Test