Oracle 1Z0-807 : Java EE 6 Enterprise Architect Certified Master

Your company has decided to expose a set of business operations through an API so that clients can access them remotely. These operations, which are modeled as methods on a stateless session bean component, act as building blocks for complex state-changing activities that need to possess atomicity,, consistency, isolation and durability (ACID) semantics.
Select the best technology to implement the API.

• A. Java Message Service (JMS)
• B. Java Connector Architecture (JCA)
• C. Remote Method Invocation (RMI)
• D. XML over HTTP

A company provides call center support for corporations world-wide. Each agent in the call center can be assigned to multiple call center customers. All the company's customers use Windows based user interfaces and it has Just signed a new customer that uses a Java EE back end and wants a rich interface.
The company is developing a user interface for the new customer with the following requirements:
-Customer service representatives (CSRs) must be able to work with minimal training on the
application. -CSRs must be able to switch between call center systems quickly. -Screens must have awindows look and feel. -2000 agents spread across four locations must be able to use the system.
Which recommendation would you make to this company about the user interface (UI)?

• A. Write the UI using JSP and JSTL.
• B. Write the UI using JSPs with embedded script lets.
• C. Write the UI usingJava Swingand describe using JNLP.
• D. Write the UI using AJAX, Accessing servlets directly.

Your web page design company is designing websites for all the stores in a local mall. Your company must create a consistent "look and feel" for these sites.
After this "look and feel- project has gone through demonstration, enhancement and approval iterations with the mall's .lions, you job is complete and the development of the actual B2C (Business -to-Client) system will be handled by a different firm
Which architecture is most appropriate for your prototype project?

• A. Three-tier, enterprise-centric
• B. Three, web-centric
• C. Two tier, web-centric
• D. Three-tier, application-centric

While analyzing an application, you observe that it contains numerous Interfaces for complex domain logic. Completing a business Function currently requires calling several of these interfaces in an order that is understood by system experts.
Which design pattern would you suggest to refactor the code?

• A. MVC
• B. Adapter
• C. DAO
• D. Decorator
• E. Facade

Which three principles are best practices when implementing a logging strategy for an enterprise application?

• A. Use the appropriate logger level for logging information.
• B. Include the thread name and Java class name in log messages.
• C. Log messages for every method entry and exit.
• D. Include programmer-specific data in the log messages.
• E. Never print log messages to the console window.