EX378

Practice EX378 Exam

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Latest EX378 Exam Dumps Questions

The dumps for EX378 exam was last updated on Jun 22,2025 .

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Question#1

How do you trace outgoing HTTP calls not using REST client (e.g., Apache HttpClient)?

A. See the Explanation.

Explanation:
Manually create span and inject headers:
Span span = tracer.spanBuilder("external-call").startSpan(); try (Scope scope = span.makeCurrent()) {
HttpRequest.setHeader("traceparent", getTraceParentHeader());
}
span.end()

Question#2

Chain @Retry, @Timeout, and @Fallback together.

A. See the Explanation.

Explanation:
@Retry(maxRetries = 3)
@Timeout(1000)
@Fallback(fallbackMethod = "fallbackResponse")
public String chainResilience() {
Thread.sleep(2000);
return "Success";
}
public String fallbackResponse() {
return "Recovered";
}

Question#3

How do you paginate results using Panache’s query API?

A. See the Explanation.

Explanation:
List<Book> page = Book.findAll().page(Page.of(1, 10)).list(); Use Page.of(pageIndex, pageSize) to control pagination.

Question#4

How do you define a simple channel that receives a stream of messages?

A. See the Explanation.

Explanation:
@Incoming("my-channel")
public void consume(String msg) {
System.out.println("Received: " + msg);
}
Define the channel in application.properties according to the messaging connector (e.g., Kafka, in-memory, AMQP).

Question#5

How do you perform a custom query using the Repository pattern in Panache?

A. See the Explanation.

Explanation:
public List<Book> findByTitle(String title) {
return find("title", title).list();
}

Exam Code: EX378         Q & A: 450 Q&As         Updated:  Jun 22,2025

 

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