Spring Cloud Technology & Digital Applications 5

Question 1

Which Spring Cloud Gateway predicate matches requests based on the value of an HTTP header?

Accepted Answer

Header predicate

Answer

The Header predicate matches routes when a request contains a specified header name and optional regex-matched value.

Question 2

In Spring Cloud, what does the term 'service mesh' integration refer to when using Spring Cloud Kubernetes?

Accepted Answer

Delegating service-to-service communication and observability to a sidecar proxy like Istio

Answer

Service mesh integration offloads cross-cutting concerns (mTLS, retries, tracing) to a sidecar proxy such as Istio or Linkerd running alongside the Spring pod.

Question 3

Which annotation registers a Spring Boot application as a Eureka client and enables service discovery?

Accepted Answer

@EnableDiscoveryClient

Answer

@EnableDiscoveryClient registers the application with any compatible service registry (Eureka, Consul, Zookeeper) and enables lookup of other services.

Question 4

What Spring Cloud contract testing tool lets a producer define contracts that are automatically turned into consumer-side tests?

Accepted Answer

Spring Cloud Contract

Answer

Spring Cloud Contract enables Consumer-Driven Contract testing by generating stubs and verifying producer implementations against shared contracts.

Question 5

How does Spring Cloud LoadBalancer obtain the list of available service instances by default?

Accepted Answer

From the service discovery registry (e.g., Eureka)

Answer

Spring Cloud LoadBalancer queries the service registry to get healthy, currently registered instances before selecting one for a request.

Spring Cloud Practice Test

Spring Cloud Practice Test

Spring Cloud Technology & Digital Applications 5