Online Access Free 1Z0-807 Practice Test

Upper management has announced a change in a company's primary hardware supplier for the next year, the timing of this change coincides with key purchases that line of business department has to make in support of its Java EE application upgrade/redesign project.
You are asked to help outline a strategy to preserve the project timeline and keep hardware training costs contained.
Which recommendation will you make?

• A.Add new hardware to create a heterogeneous environment.
• B.Request more time to consider the total cost of change to your project and to modify your budget.
• C.Use new hardware on the web tier and redeploy existing hardware to the other tiers.
• D.Request another year of sales and support with the existing vendor.

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.Dispatcher view
• B.Service to Worker
• C.DAO
• D.Composite View

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 using AJAX, Accessing servlets directly.
• D.Write the UI usingJava Swingand describe using JNLP.

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

Your application produces messages by client applications. The number of clients interested in the messages varies continuously at run time. Any client can process any message, but a message must be processed exactly once.
How should the messages be delivered to the clients?

• A.Using a Java Message Service (JMS) topic
• B.Using XML over HTTP
• C.Using a Simple Object Access Protocol (SOAP) web service
• D.Using a Java Message Service (JMS)queue