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SUN 310-083 Exam Syllabus Topics:

SUN Sun Certified Web Component Developer for J2EE 5 Sample Questions:

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

2. Which is a benefit of precompiling a JSP page?

A) It avoids initialization on the first request.
B) It provides the ability to debug runtime errors in the application.
C) It provides better performance on the first request for the JSP page.
D) It avoids execution of the _jspService method on the first request.

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

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

4. You are creating a servlet that generates stock market graphs. You want to provide the web browser with precise information about the amount of data being sent in the response stream. Which two HttpServletResponse methods will you use to provide this information?
(Choose two.)

A) response.setIntHeader("Content-Length", numberOfBytes);
B) response.setLength(numberOfBytes);
C) response.setContentLength(numberOfBytes);
D) response.setIntHeader("Length", numberOfBytes);
E) response.setHeader("Content-Length", numberOfBytes);
F) response.setHeader("Length", numberOfBytes);

5. In your web application, you need to execute a block of code whenever the session object is first created. Which design will accomplish this goal?

A) Create a Filter class, call the getSession(true) method, and if the result was NOT null, then execute that block of code.
B) Create an HttpSessionActivationListener class and implement the sessionCreated method with that block of code.
C) Create a Filter class, call the getSession(false) method, and if the result was null, then execute that block of code.
D) Create an HttpSessionListener class and implement the sessionCreated method with that block of code.
E) Create an HttpSessionListener class and implement the sessionInitialized method with that block of code.

Solutions: