Name: Java EE 7 Application Developer
Brand: ValidExamDumps
SKU: 1Z0-900
Price: 20 USD
Availability: InStock
Rating: 5.0 (250 reviews)

Free Oracle 1Z0-900 Exam Actual Questions

The questions for 1Z0-900 were last updated On May 1, 2024

Question No. 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?

ACreate two @onMessage methods in the same endpoint with appropriate parameter types.

BDefine the @onMessage methods in your endpoint with Object as parameter and check the actual type in your code.

CYou can achieve this only by creating separate WebSocket endpoints for each message type.

DCreate two @onMessage methods, each with appropriate decoder attribute in the same endpoint.

Show Answer

Correct Answer: D

Question No. 2

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

Aprotecting data from unauthorized viewing by using encryption

Bverifying that a user is allowed to perform an action

Censuring that data is not modified in transit

Dverifying identity claims from users

Show Answer

Correct Answer: B, C

Question No. 3

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

Athe Runnable Interface

Bthe ManagedExecutorTask interface

Cthe TaskEventListener interface

Dthe ManagedTaskListener interface

Show Answer

Correct Answer: D

Question No. 4

Given the code fragment:

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

A<base url>/Employees/89724

B<base url>/Employees/J6349

C<base url>/Employees/id:a7280

D<base url>/Employees/id/J6349

Show Answer

Correct Answer: A

Question No. 5

What is true about Message-Driven Beans (MDBs)?

AMDBs can participate in transactions.

BMDBs are invoked synchronously.

CEach MDBs can process messages only from a single client.

DMDBs retain data caches between client calls.

Show Answer

Correct Answer: A