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Exam : SUN 310-084
Title : Sun Certified Web Component Developer for Java. EE 5 Upgrade


1. Given the function invocation expression ${my:reverse("42")}, and that the function reverse is mapped into a Java method called reverse, which two are valid signatures for the Java method reverse? (Choose two.)
A. public int reverse(String val)
B. public String reverse(String val)
C. public static int reverse(String val)
D. public static String reverse(int val)
E. private static double reverse(double val)
F. public int reverse(String value, String name)
G. public static int reverse(int value, String name)
Answer: CD

2. A developer is designing a multi-tier web application and discovers a need to log each incoming client request.
Which two patterns, taken independently, provide a solution for this problem? (Choose two.)
A. Transfer Object
B. Service Locator
C. Front Controller
D. Intercepting Filter
E. Business Delegate
F. Model-View-Controller
Answer: CD

3. Which three are true about the HttpServletRequestWrapper class? (Choose three.)
A. The HttpServletRequestWrapper is an example of the Decorator pattern.
B. The HttpServletRequestWrapper can be used to extend the functionality of a servlet request.
C. A subclass of HttpServletRequestWrapper CANNOT modify the behavior of the getReader method.
D. An HttpServletRequestWrapper may be used only by a class implementing the javax.servlet.Filter interface.
E. An HttpServletRequestWrapper CANNOT be used on the request passed to the RequestDispatcher.include method.
F. An HttpServletRequestWrapper may modify the header of a request within an object implementing the javax.servlet.Filter interface.
Answer: ABF

4. Which two are valid values for the <transport-guarantee> element inside a <security-constraint> element of a web application deployment descriptor? (Choose two.)
A. NULL
B. SECURE
C. INTEGRAL
D. ENCRYPTED
E. CONFIDENTIAL
Answer: CD

5. Given the relationship:
The tag handler MyTag extends SimpleTagSupport. At runtime, the doTag method throws a SkipPageException.
Which three events occur after the SkipPageException is thrown? (Choose three.)
A. Evaluation of page2.jsp stops.
B. Evaluation of page1.jsp stops.
C. The MyTag instance is NOT reused.
D. Evaluation of page2.jsp continues.
E. Evaluation of page1.jsp continues.
Answer: ACE

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