Free Oracle 1Z0-807 Practice Test & Real Exam Questions

Exam Code/Number: 1Z0-807
Exam Name/Title: Java EE 6 Enterprise Architect Certified Master
Certification Provider: Oracle
Corresponding Certification: Java and Middleware

Exam Questions: 90
Updated On: Oct 08, 2026

Question #10

Which two statements are true about Java Cryptography Architecture (JCA)?

A. Implementations of cryptographic algorithms can be plugged in to a JVM after it has been installed and at run time.

B. Any JCA provider must implement each supported category of algorithms.

C. Categories of algorithms supported by JCA include message digests, signatures encryption, management, and random number generation.

D. Exactly one Implementation of each category of cryptographic algorithms must be provided.

Discussion 0

Correct Answer: A,C Vote an answer

Question #11

Which three actions restrict the ability of a web application to scale in response to load
as additional computing resources are made available to it?

A. Storing users' session state in a database

B. E.Maintaining users' session state by usingstatefulsession beans

C. B.Implementing corebusinesslogic in the web tier

D. Implementing core business logic using stateless session beans

Discussion 0

Correct Answer: C,D Vote an answer

Question #12

While analyzing an existing web application, you observe the following issues in the source code:
-Duplicatecontrol code is scattered throughout various view. -Businessand presentationlogicare mixed within these view.
The next phase of the project involves refactoring the existing code to address these two issues.
Which design pattern, if employed in the refactoring exercise, would most directly address the two issues?

A. Service to Worker

B. DAO

C. Composite View

D. Dispatcher view

Discussion 0

Correct Answer: A Vote an answer

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Question #13

Which three actions represent best practices when implementing an exception handling strategy for an application?

A. Always include information specific to the error when logging an exception.

B. Create a customuncheckedexception if the action to resolve the exception cannot be defined.

C. Always log the specific exception before re-throwing a wrapped exception.

D. Always throw exceptions in methods that are designed for exception handling.

Discussion 0

Correct Answer: B,C Vote an answer

Question #14

A company that sells avatar skins to virtual reality environments has a static website for advertising their wares. The website was built using What You See Is What You Get (WYSIWYG) html editor and also contains a lot of JavaScript. The company now wants to add server side processing capabilities developing a shopping application, the company is considering using JavaServer Faces (JSF)
Which statement is true?

A. The JavaScriptcode has to be rewritten to conform to JSF standards.

B. The web pages cannot be previewed accurately with a genericWYSIWYG HIML editor.

C. The web pages must be converted into Face lets.

D. JSF tags cannot be integrated into the HTML generated by WYSIWYG editors.

Discussion 0

Correct Answer: B Vote an answer

Question #15

You are the architect at ACME, a large global retailer of festival and holiday accessories. ACME wants to launch a new shopping portal for the holiday shopping session, allowing two months from project inception to going live. The portal must contain in-house and third-party stock to attack customers.
Fast response times are also critical so users remain engaged and sticky to the portal.
What would you recommend to the ACME project team to deliver this project?

A. Access all content regardless of source using the HTML 5 XML parsing capabilities of the browser

B. Access as much content with bulk-loading as possible; use JSONP to access the remainder.

C. Access all third party content using JSON to dynamically load it from the browser.

Discussion 0

Correct Answer: B Vote an answer

Question #16

Which are the objectives of the Strategy pattern? (Choose Two)

A. To define an object that encapsulates how a set of objects interacts

B. To allow subclasses to redefine certain steps of an algorithm without changing the algorithm's structure

C. To define a family of algorithms, encapsulate each one, and make them interchangeable

D. To decouple an abstraction horn its implementation so that the two can vary independently

E. To define the skeleton of an algorithm, deferring some steps to subclasses

Discussion 0

Correct Answer: A,B Vote an answer

Question #17

Which two statements apply to unsigned applets?

A. They can access the client file system.

B. They can load native libraries.

C. They can connect to theoriginatinghost.

D. They can invokepublicmethodsof applets on a page.

E. They can connect to third-party servers.

Discussion 0

Correct Answer: C,D Vote an answer

Question #18

You are implementing an online music application that will store and play a user's collection of songs. You want users to rate their songs and view the top songs from friends. All queries must complete in four seconds or less.
Which approach would meet the response time requirement with minimal overhead?

A. JPA entity class with an eager fetching strategy

B. Java class that uses an optimized stored procedure

C. JPA entity class with a lazy fetching strategy

D. Java class that uses JDBC with embedded SQL

Discussion 0

Correct Answer: B Vote an answer

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