SUN 310-083 : Sun Certified Web Component Developer for J2EE 5

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

1. Given the two security constraints in a deployment descriptor:
1 01. <security-constraint>
1 02. <!--a correct url-pattern and http-method goes here-->
1 03. <auth-constraint><role-name>SALES</role-name></auth-
1 03. <auth-constraint>
1 04. <role-name>SALES</role-name>
1 05. </auth-constraint>
1 06. </security-constraint>
1 07. <security-constraint>
1 08. <!--a correct url-pattern and http-method goes here-->
1 09. <!-- Insert an auth-constraint here -->
1 10. </security-constraint>
If the two security constraints have the same url-pattern and http-method, which two, inserted independently at line 109, will allow users with role names of either SALES or
MARKETING to access this resource? (Choose two.)

A) <auth-constraint/>
B) <auth-constraint>
< role-name>ANY</role-name>
< /auth-constraint>
C) <auth-constraint>
< role-name>MARKETING</role-name>
< /auth-constraint>
D) <auth-constraint>
< role-name>*</role-name>
< /auth-constraint>

2. Given this fragment in a servlet:
2 3. if(req.isUserInRole("Admin")) {
2 4. // do stuff
2 5. }
And the following fragment from the related Java EE deployment descriptor:
8 12. <security-role-ref>
8 13. <role-name>Admin</role-name>
8 14. <role-link>Administrator</role-link>
8 15. </security-role-ref>
9 00. <security-role>
9 01. <role-name>Admin</role-name>
9 02. <role-name>Administrator</role-name>
9 03. </security-role>
What is the result?

A) The deployment descriptor is NOT valid.
B) Line 24 can never be reached.
C) If line 24 executes the user's role will NOT be predictable.
D) If line 24 executes, the user's role will be Administrator.
E) If line 24 executes, the user's role will be Admin.

3. Which two security mechanisms can be directed through a sub-element of the <user-data- constraint> element in a web application deployment descriptor? (Choose two.)

A) authentication
B) authorization
C) data integrity
D) confidentiality

4. Click the Exhibit button.
Given:
1 1. <% com.example.Advisor advisor = new com.example.Advisor(); %>
1 2. <% request.setAttribute("foo", advisor); %>
Assuming there are no other "foo" attributes in the web application, which three are valid
EL expressions for retrieving the advice property of advisor? (Choose three.)

A) ${requestScope.foo.advice}
B) ${request.foo.advice}
C) ${requestScope["foo"["advice"]]}
D) ${foo.advice}
E) ${requestScope[foo[advice]]}
F) ${requestScope["foo"]["advice"]}

5. 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) Front Controller and Business Delegate
C) Model-View-Controller and Intercepting Filter
D) Intercepting Filter and Transfer Object
E) Business Delegate and Transfer Object

Solutions: