1z0-900 Exam - Free Actual Q&As, Page 1

1z0-900 Actual Exam Questions

Last updated on Dec. 15, 2024.

Vendor:Oracle

Exam Code:1z0-900

Exam Name:Java EE 7 Application Developer

Exam Questions:142

Topic 1 - Single Topic

Question #1 Topic 1

You need to develop a chat application, which allows the display of emoticons and images together with text messages.
How should you configure a WebSocket endpoints to receive both text and binary messages?

A. Create two @onMessage methods in the same endpoint with appropriate parameter types.
B. Define the @onMessage methods in your endpoint with Object as parameter and check the actual type in your code.
C. You can achieve this only by creating separate WebSocket endpoints for each message type.
D. Create two @onMessage methods, each with appropriate decoder attribute in the same endpoint.

Reveal Solution Discussion 3

Correct Answer: A 🗳️

Question #2 Topic 1

Which two capabilities are provided by the Java Authentication and Authorization Services (JAAS) API? (Choose two.)

A. protecting data from unauthorized viewing by using encryption
B. verifying that a user is allowed to perform an action
C. ensuring that data is not modified in transit
D. verifying identity claims from users

Reveal Solution Discussion 3

Correct Answer: BD 🗳️

Question #3 Topic 1

Which interface should you implement if you want to be alerted to the lifecycle events surrounding your task being executed by a ManagedExecutorService?

A. the Runnable Interface
B. the ManagedExecutorTask interface
C. the TaskEventListener interface
D. the ManagedTaskListener interface

Reveal Solution Discussion

Correct Answer: D 🗳️
Reference:
https://github.com/javaee/concurrency-ee-spec/blob/master/api/src/main/java/javax/enterprise/concurrent/ManagedExecutorService.java

Question #4 Topic 1

Given the code fragment:

Which URL triggers the invocation of the getEmployee () method?