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Oracle Java Enterprise Edition 5 Web Component Developer Certified Professional Sample Questions:

1. Given: http://com.example/myServlet.jsp?num=one&num=two&num=three Which two produce the output "one, two and three"? (Choose two.)

A) ${parameterValues["num"]["0"]}, ${parameterValues["num"]["1"]} and ${parameterValues["num"]["2"]}
B) ${parameterValues.num[0]}, ${parameterValues.num[1]} and ${parameterValues.num[2]}
C) ${param.num[0],[1] and [2]}
D) ${paramValues[0],[1] and [2]}
E) ${paramValues["num"][0]}, ${paramValues["num"][1]} and ${paramValues["num"][2]}
F) ${param.num[0]}, ${param.num[1]} and ${param.num[2]}
G) ${paramValues.num[0]}, ${paramValues.num[1]} and ${paramValues.num[2]}

2. A developer has created a special servlet that is responsible for generating XML content that is sent to a data warehousing subsystem. This subsystem uses HTTP to request these large data files, which are compressed by the servlet to save internal network bandwidth. The developer has received a request from management to create several more of these data warehousing servlets. The developer is about to copy and paste the compression code into each new servlet. Which design pattern can consolidate this compression code to be used by all of the data warehousing servlets?

A) Facade
B) Composite Facade
C) Intercepting Filter
D) Transfer Object
E) View Helper

3. Click the Exhibit button.
The Appliance class is a Singleton that loads a set of properties into a Map from an external data source. Assume:
An instance of the Appliance class exists in the application-scoped attribute, appl The appliance object includes the name property that maps to the value Cobia The request-scoped attribute, prop, has the value name.
Which two EL code snippets will display the string Cobia? (Choose two.)

A) ${appl.properties.prop}
B) ${appl.properties[name]}
C) ${appl.getProperties().get('name')}
D) ${appl.getProperties().get(prop)}
E) ${appl.properties[prop]}
F) ${appl.properties.name}

4. A developer is designing a multi-tier web application and discovers a need to hide the details of establishing and maintaining remote communications from the client. In addition, the application needs to find, in a transparent manner, the heterogeneous business components used to service the client's requests. Which design patterns, working together, address these issues?

A) Front Controller and Business Delegate
B) Model-View-Controller and Intercepting Filter
C) Intercepting Filter and Transfer Object
D) Business Delegate and Transfer Object
E) Business Delegate and Service Locator

5. Which ensures that a JSP response is of type "text/plain"?

A) <%@ page pageEncoding="text/plain" %>
B) <% response.setEncoding("text/plain"); %>
C) <%@ page contentEncoding="text/plain" %>
D) <%@ page contentType="text/plain" %>
E) <% response.setMimeType("text/plain"); %>
F) <%@ page mimeType="text/plain" %>

Solutions: