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Q31.
javax.servlet.http.HttpSessionBindingListener {
Q32. Which two statements are true about the security-related tags in a valid Java EE deployment descriptor? (Choose two)
A. Every <security-constraint> tag must have at least one <http-method> tag.
B. A <security-constraint> tag can have many <web-resource-collection> tags.
C. A given <auth-constraint> tag can apply to only one <web-resource-collection> tag.
D. A given <web-resource-collection> tag can contain from zero to many <url-pattern> tags.
E. It is possible to construct a valid <security-constraint> tag such that, for a given resource user roles can access that resource.
Answer: BE
Q33. 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:
42. <context-param>
43. <param-name>webmasterEmail</param-name>
44. <param-value>master@example.com</param-value>
45.</context-param>
Which JSP code snippet creates this email link?
A. <a href=‘mailto:${contextParam.webmaterEmail}’>contact us</a>
B. <a href=‘mailto:${applicationScope.webmaterEmail}’>contact us</a>
C. <a href=‘mailto:${contextInitParam.webmaterEmail}’>contact us</a>
D. <a href=‘mailto:${initParam.webmaterEmail}’>contact us</a>
Answer: D
Q34. The Squeaky Beans Inc. shopping application was initially developed for a non-distributed environment. The company recently purchased the Acme Application Server, which supports distributed Httpsession objects. When deploying the application to the server, the doployer marks it as distributable in the web application deployment descriptor to take advantage of this feature.
Given this scenario, which two must be true? (Choose two)
A. The J2EE web container must support migration of objects that implement serializable.
B. The J2EE web container must use the native JVM Serialization mechanism for distributing HttpSesaion objects.
C. As per the specification, the J2EE web container ensures that distributed Httpsassion objects will be stored in a database.
D. Storing references to Enterprise JavaBeans components in the HttpSession object might NOT supported by J2EE web contain.
Answer: AD
Q35.
Assume session is an HttpSession, and is not referenced anywhere else in ServletA.
Which two changes, taken together, ensure that value is equal to “Hello” on line 23? (Choose two) A. ensure that the ServletB.service method is synchronized
B. ensure that the ServletA.service method is synchronized
C. ensure that ServletB synchronizes on the session object when setting session attributes
D. enclose lines 21-22 in synchronized block:
synchronized(this) (
session.setAttribute(key, “Hello”);
value = session.getAttribute(key);
)
E. enclose lines 21-22 in synchronized block:
synchronized(session) (
session.setAttribute(key, “Hello”);
value = session.getAttribute(key);
)
Answer: CE
Q36. Which JSP standard action can be used to import content from a resource called foo.jsp?
A. <jsp:import file='foo.jsp' />
B. <jsp:import page='foo.jsp' />
C. <jsp:include page='foo.jsp' />
D. <jsp:include file='foo.jsp' />
E. <jsp:import>foo.jsp</jsp:import>
F. <jsp:include>foo.jsp</jsp:include>
Answer: C
Q37. A web browser need NOT always perform a complete request for a particular page that it suspects might NOT have changed. The HTTP specification provides a mechanism for the browser to retrieve only a partial response from the web server; this response includes information, such as the Last-Modified date but NOT the body of the page.
Which HTTP method will the browser use to retrieve such a partial response?
A. GET
B. ASK
C. SEND
D. HEAD
E. TRACE
F. OPTIONS
Answer: D
Q38. You are working on a JSP that is intended to inform users about critical errors in the system. The JSP code is attempting to access the exception that represents the cause of the problem, but your IDE is telling you that the variable does not exist. What should you do to address this problem?
A. Add a page directive stating that this page is an error handler
B. Add scriptlet code to create a variable that refer to the exception
C. Add a <jsp:useBean tag to declare the and access the exception>
D. Perform the error handling in a servlet rather than in the JSP
E. Edit the page that caused the error to ensure that it specifies this page as its error handler
Answer: A
Q39. When using Servlet asynchronous API if you want to dispatch the request back to a particular url -"/url" within the same Servlet Context which of the following API would you use?
A. ASyncContext.dispatch();
B. AsyncContext.dispatch("/url");
C. AsyncContext.dispatch(servletContext, "/url");
D. AsyncContext.start(runnable);
E. RequestDispatcher.fotward("/url");
F. RequestDispatcher.forward(servletContext, "/url");
G. RequestDispatcher.include("/url");
Answer: AC
Q40.
<role-link>Administrator</role-link>