Spring Cloud Spring Cloud Service Discovery & Registration

Question 1

Which Spring Cloud component provides service registration and discovery using Netflix Eureka?

Accepted Answer

Spring Cloud Netflix Eureka

Answer

Spring Cloud Config

Answer

Spring Cloud Gateway

Answer

Spring Cloud Sleuth

Question 2

What annotation is used to enable a Spring Boot application to act as a Eureka Server?

Accepted Answer

@EnableEurekaServer

Answer

@EnableEurekaClient

Answer

@EnableDiscoveryClient

Answer

@EnableServiceRegistry

Question 3

What is the default interval at which Eureka clients send heartbeats to the server?

Accepted Answer

30 seconds

Answer

10 seconds

Answer

60 seconds

Answer

5 seconds

Question 4

Which property disables Eureka registration for a Spring Boot service during local development?

Accepted Answer

eureka.client.register-with-eureka=false

Answer

eureka.client.fetch-registry=false

Answer

eureka.server.enabled=false

Answer

spring.cloud.discovery.enabled=false

Question 5

What mechanism does Spring Cloud use to support multiple service discovery backends like Eureka, Consul, and Zookeeper through a single API?

Accepted Answer

DiscoveryClient abstraction

Answer

Service Mesh

Answer

ServiceLocator pattern

Answer

BeanDefinitionRegistry

Question 6

In Eureka's self-preservation mode, what triggers the server to stop evicting instances?

Accepted Answer

Received heartbeats fall below the expected threshold

Answer

CPU usage exceeds 80%

Answer

More than 10 instances are registered

Answer

Network latency exceeds 500ms