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Java EE 6 Enterprise Architect Certified Master Exam Questions and Answers

Question 9

Which three statements are true about inheritance?

B. It should be possible to substitute the derived class for its base class.

C. Inheritance allows you to modify the behavior of objects.

Inheritance promotes encapsulation better than interfaces.

The derived class must override all methods of the base class.

Question 10

Which three web applications work best when they are designed to be server-push enabled?

B. A web chat that allows users to communicate using easily accessible web interfaces

A live sporting event application, used to deliver current results during matches

D. An auction system that provides users with live online bidding

A graphics rendering application that generates visuals in an orderly fashion

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?

B.Implementing corebusinesslogic in the web tier

Implementing core business logic using stateless session beans

Storing users' session state in a database

E.Maintaining users' session state by usingstatefulsession beans

Question 12

Which two statements are true about security strategies at the message-level?

Each portion of a compound message is secured.

C. SSL is required to ensure authenticity, integrity, and confidentiality.

Message attachments are secured without the need for a dedicated API.

Security is dependent on the application environment or the transport protocol.