Spring Cloud Technology & Digital Applications 2

Question 1

Which Spring Cloud component provides a pattern for preventing cascading failures across microservices?

Accepted Answer

Spring Cloud Circuit Breaker

Answer

Spring Cloud Circuit Breaker abstracts circuit breaker implementations (Resilience4j, Sentinel) to stop cascading failures between services.

Question 2

In Spring Cloud Config Server, which backend store is used by default to store configuration files?

Accepted Answer

Git repository

Answer

Spring Cloud Config Server defaults to a Git repository backend, enabling version-controlled externalized configuration.

Question 3

What annotation enables a Spring Boot application to act as a Eureka Discovery Server?

Accepted Answer

@EnableEurekaServer

Answer

@EnableEurekaServer placed on the main class turns the application into a Netflix Eureka service registry.

Question 4

Spring Cloud Gateway uses which programming model for routing HTTP requests?

Accepted Answer

Reactive (Project Reactor / WebFlux)

Answer

Spring Cloud Gateway is built on Spring WebFlux and Project Reactor, making it fully non-blocking and reactive.

Question 5

Which property file suffix does a Spring Cloud Config client use to request a profile-specific configuration?

Accepted Answer

{app}-{profile}.yml

Answer

Config Server resolves files named {application}-{profile}.yml (or .properties) for profile-specific overrides.

Spring Cloud Practice Test