SUN 310-083

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

1. A developer has used this code within a servlet:
62. if(request.isUserInRole("vip")) {
63. // VIP-related logic here
64. }
What else must the developer do to ensure that the intended security goal is achieved?

A) create a user called vip in the security realm
B) declare a security-role-ref for vip in the deployment descriptor
C) define a security-role named vip in the deployment descriptor
D) define a group within the security realm and call it vip

2. Which interface must a session attribute implement if it needs to be notified when a web container persists a session?

A) javax.servlet.http.HttpSessionActivationListener
B) javax.servlet.http.HttpSessionListener
C) javax.servlet.http.HttpSessionBindingListener
D) javax.servlet.http.HttpSessionAttributeListener

3. In a JSP-centric shopping cart application, you need to move a client's home address of the Customer object into the shipping address of the Order object. The address data is stored in a value object class called Address with properties for: street address, city, province, country, and postal code. Which two JSP code snippets can be used to accomplish this goal? (Choose two.)

A) <c:set var='order' property='shipAddress'>
< jsp:getProperty name='client' property='homeAddress' />
< /c:store>
B) <c:set target='${order}' property='shipAddress'
value='${client.homeAddress}' />
C) <c:set target='${order}' property='shipAddress'>
< jsp:getProperty name='client' property='homeAddress' />
< /c:set>
D) <c:setProperty name='${order}' property='shipAddress'>
< jsp:getProperty name='client' property='homeAddress' />
< /c:setProperty>
E) <c:set var='order' property='shipAddress'
value='${client.homeAddress}' />
F) <jsp:setProperty name='${order}' property='shipAddress'
value='${client.homeAddress}' />

4. 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 an instance variable.
C) Store the data in the ServletContext object.
D) Store the data in a local variable.
E) Store the data in the ServletRequest object.

5. All of your JSPs need to have a link that permits users to email the web master. This web application is licensed to many small businesses, each of which have a different email address for the web master. You have decided to use a context parameter that you specify in the deployment descriptor, like this:
4 2. <context-param>
4 3. <param-name>webmasterEmail</param-name>
4 4. <param-value>[email protected]</param-value>
4 5. </context-param>
Which JSP code snippet creates this email link?

A) <a href='mailto:${applicationScope.webmasterEmail}'>contact us</a>
B) <a href='mailto:${contextInitParam.webmasterEmail}'>contact us</a>
C) <a href='mailto:${contextParam.webmasterEmail}'>contact us</a>
D) <a href='mailto:${initParam.webmasterEmail}'>contact us</a>

Solutions: