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SUN 310-083 Exam Syllabus Topics:

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

Question 1

For manageability purposes, you have been told to add a "count" instance variable to a critical JSP Document so that a JMX MBean can track how frequent this JSP is being invoked. Which JSP code snippet must you use to declare this instance variable in the JSP
Document?

A. <jsp:scriptlet.declaration>
int count = 0;
< jsp:scriptlet.declaration>
B. <jsp:declaration.instance>
int count = 0;
< jsp:declaration.instance>
C. <jsp:declaration>
int count = 0;
< jsp:declaration>
D. <%! int count = 0; %>

Question 2

In which two locations can library dependencies be defined for a web application? (Choose two.)

A. the /META-INF/MANIFEST.MF manifest of a JAR in the web application classpath
B. the /META-INF/dependencies.xml file
C. the web application deployment descriptor
D. the /META-INF/MANIFEST.MF manifest file

Question 3

Given a web application in which the request parameter productID contains a product identifier. Which two EL expressions evaluate the value of the productID? (Choose two.)

A. ${params.productID}
B. ${params.productID[1]}
C. ${productID}
D. ${paramValues.productID}
E. ${pageContext.request.productID}
F. ${param.productID}
G. ${paramValues.productID[0]}

Question 4

A developer is designing a web application that must support multiple interfaces, including:
an XML web service for B2B
HTML for web-based clients
WML for wireless customers
Which design pattern provides a solution for this problem?

A. Data Access Object
B. Business Delegate
C. Session Facade
D. Model-View-Controller
E. Chain of Responsibility

Question 5

A developer chooses to avoid using SingleThreadModel but wants to ensure that data is updated in a thread-safe manner. Which two can support this design goal? (Choose two.)

A. Store the data in the HttpSession object.
B. Store the data in the ServletContext object.
C. Store the data in a local variable.
D. Store the data in an instance variable.
E. Store the data in the ServletRequest object.

Solutions: