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SUN Sun Certified Web Component Developer for J2EE 5 Sample Questions:
1. You are building a dating web site. The client's date of birth is collected along with lots of other information. You have created an EL function with the signature:
calcAge(java.util.Date):int and it is assigned to the name, age, in the namespace, funct. In one of your JSPs you need to print a special message to clients who are younger than 25.
Which EL code snippet will return true for this condition?
A) ${funct:age(client.birthDate) < 25}
B) ${funct:age[client.birthDate] < 25}
C) ${calcAge[client.birthDate] < 25}
D) ${funct:calcAge[client.birthDate] < 25}
E) ${calcAge(client.birthDate) < 25}
F) ${funct:calcAge(client.birthDate) < 25}
2. Given a header in an HTTP request:
X-Retries: 4
Which two retrieve the value of the header from a given HttpServletRequest request?
(Choose two.)
A) request.getHeader("X-Retries")
B) request.getRequestHeaders("X-Retries").get(0)
C) request.getIntHeader("X-Retries")
D) request.getRequestHeader("X-Retries")
E) request.getHeaders("X-Retries").get(0)
3. Which two statements about tag files are true? (Choose two.)
A) A file named foo.tag, located in a web application's root directory, is recognized as a tag file by the container.
B) If files foo1.tag and foo2.tag both reside in /WEB-INF/tags/bar, the container will consider them part of the same tag library.
C) Classic tag handlers and tag files CANNOT reside in the same tag library.
D) A file named foo.tag, located in /WEB-INF/tags/bar, is recognized as a tag file by the container.
E) A file named foo.tag, bundled in a JAR file but NOT defined in a TLD, triggers a container translation error.
4. Click the Exhibit button.
Assume the tag library in the exhibit is placed in a web application in the path /WEB-
INF/tld/example.tld.
1.
2. <ex:hello />
Which JSP code, inserted at line 1, completes the JSP code to invoke the hello tag?
A) <%@ taglib prefix="ex"
uri="http://example.com/tld/example" %>
B) <%@ taglib prefix="ex" uri="/WEB-INF/tld" %>
C) <%@ taglib prefix="ex"
uri="http://localhost:8080/tld/example.tld" %>
D) <%@ taglib uri="/WEB-INF/tld/example.tld" %>
5. You are building JSP pages that have a set of menus that are visible based on a user's security role. These menus are hand-crafted by your web design team; for example, the
SalesManager role has a menu in the file /WEB-INF/html/sales-mgr-menu.html. Which JSP code snippet should be used to make this menu visible to the user?
A) <jsp:if test='request.isUserInRole("SalesManager")'>
< jsp:include file='/WEB-INF/html/sales-mgr-menu.html' />
< /jsp:if>
B) <% if ( request.isUserInRole("SalesManager") ) { %>
< %@ include file='/WEB-INF/html/sales-mgr-menu.html' %>
< % } %>
C) <% if ( request.isUserInRole("SalesManager") ) { %>
< jsp:include file='/WEB-INF/html/sales-mgr-menu.html' />
< % } %>
D) <jsp:if test='request.isUserInRole("SalesManager")'>
< %@ include file='/WEB-INF/html/sales-mgr-menu.html' %>
< /jsp:if>
Solutions:
Question # 1 Answer: A | Question # 2 Answer: A,C | Question # 3 Answer: B,D | Question # 4 Answer: A | Question # 5 Answer: B |