EX221 sample questions

Question 1

You are developing a cloud-native integration application using Red Hat Fuse on OpenShift. You need to implement a Content-Based Router pattern to direct incoming orders to different processing endpoints based on the 'orderType' header. Which Camel Java DSL syntax correctly implements this pattern?

Accepted Answer

from("direct:orders").choice().when(header("orderType").isEqualTo("electronics")).to("jms:electronics").when(header("orderType").isEqualTo("books")).to("jms:books").otherwise().to("jms:general");

Answer

from("direct:orders").filter(header("orderType").isEqualTo("electronics")).to("jms:electronics").filter(header("orderType").isEqualTo("books")).to("jms:books");

Answer

from("direct:orders").multicast().to("jms:electronics", "jms:books", "jms:general");

Answer

from("direct:orders").routingSlip(header("orderType"));

Question 2

A developer is configuring a Quarkus application to act as a consumer for a Kafka topic named 'transaction-events'. The application uses the SmallRye Reactive Messaging extension. Which configuration property in 'application.properties' correctly maps the 'transactions-in' channel to the 'transaction-events' Kafka topic?

Accepted Answer

mp.messaging.incoming.transactions-in.topic=transaction-events

Answer

kafka.consumer.transactions-in.topic=transaction-events

Answer

quarkus.kafka.incoming.transactions-in.topic=transaction-events

Answer

mp.messaging.outgoing.transactions-in.target=transaction-events

Question 3

You are implementing a fault tolerance strategy for a REST client in a Quarkus application. You want to ensure that if the external service fails, the application retries the request up to 3 times with a 200ms delay between attempts. Which annotation usage is correct?

Accepted Answer

@Retry(maxRetries = 3, delay = 200)

Answer

@Repeat(count = 3, interval = 200)

Answer

@CircuitBreaker(requestVolumeThreshold = 3, delay = 200)

Answer

@Fallback(retries = 3, wait = 200)

Question 4

Select TWO valid methods to inject a Camel `ProducerTemplate` into a Quarkus bean to send messages to a route endpoint.

Accepted Answer

@Inject ProducerTemplate producerTemplate;

Accepted Answer

@EndpointInject("direct:start") ProducerTemplate producer;

Answer

@ConfigProperty(name = "camel.producer") ProducerTemplate producer;

Answer

ProducerTemplate producer = new DefaultProducerTemplate();

Answer

@Produce("direct:start") ProducerTemplate producer;

Question 5

You are creating a JUnit 5 test for a Camel route in a Quarkus application. You want to verify that a specific endpoint receives exactly 5 messages. Which method on the `MockEndpoint` class should you call?

Accepted Answer

expectedMessageCount(5)

Answer

assertMessagesReceived(5)

Answer

verifyCount(5)

Answer

expectBodies(5)

Question 6

A financial institution uses a Quarkus-based microservice to process payments. The service must ensure that the `validateAccount` route is completely executed before the `debitAccount` route begins, but they are decoupled via a messaging system. However, for auditing, you need to send a copy of the incoming message to an audit queue *without* altering the main processing flow. Which Camel pattern is most appropriate for the audit requirement?

Accepted Answer

Wire Tap

Answer

Multicast

Answer

Splitter

Answer

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Free EX221 sample questions

You are developing a cloud-native integration application using Red Hat Fuse on OpenShift. You need to implement a Content-Based Router pattern to direct incoming orders to different processing endpoints based on the 'orderType' header. Which Camel Java DSL syntax correctly implements this pattern?

You are implementing a fault tolerance strategy for a REST client in a Quarkus application. You want to ensure that if the external service fails, the application retries the request up to 3 times with a 200ms delay between attempts. Which annotation usage is correct?

Select TWO valid methods to inject a Camel `ProducerTemplate` into a Quarkus bean to send messages to a route endpoint.

You are creating a JUnit 5 test for a Camel route in a Quarkus application. You want to verify that a specific endpoint receives exactly 5 messages. Which method on the `MockEndpoint` class should you call?

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