Oracle 1Z0-899 問題集

質問 1：
In order to handle time outs and errors in an asynchronous application, a web application must implement which of the following interfaces?
A. AsyncListener
B. ServletContextAttributeListener
C. HttpSessionListener
D. ServletContextListener
E. AsyncContextListener
F. HttpSessionAttributeListener
正解：A

質問 2：
Which describes a trigger that causes a call to an AsyncListener?
A. Addition of a new filter to the processing stream for this request
B. Receipt of a new request from the same client
C. Completion of each timer interval
D. Completion of processing
正解：D

質問 3：
You have been contracted to create a web site for a free dating service. One feature is the ability for one client to send a message to another client, which is displayed in the latter client's private page. Your contract explicitly states that security is a high priority. Therefore, you need to prevent cross-site hacking in which one user inserts JavaScript code that is then rendered and invoked when another user views that content.
Which two JSTL code snippets will prevent cross-site hacking in the scenario above? (Choose two.)
A. <c:out>${message}</c:out>
B. <c:out eliminateXml= 'true'>${message}</c:out>
C. <c:out value= '${message}' />
D. <c:out value='${message}' eliminateXml= 'true' />
E. <c:out value= '${message}' escapeXMl= 'true' />
正解：C,E

質問 4：
Which statement is true about web container session management?
A. If the web application uses HTTPS, then the web container may use the data on the HTTPS request stream to identify the client.
B. The JSESSIONID cookie is stored permanently on the client so that a user may return to the web application and the web container will rejoin that session.
C. To activate URL rewriting, the developer must use the HttpServletResponse.setURLRewriting method.
D. Access to session-scoped attributes is guaranteed to be thread-safe by the web container.
正解：A

質問 5：
ServletContextListeners are invoked in
A. contextInitialized method are invoked in the order in which they are declared in the web.xml and the contextDestroyed method is invoked in the reverse order in which they are declared in the web.xml
B. contextInitialized and contextDestroyed are invoked in the order in which they are declared in the web.xml
C. contextInitialized and contextDestroyed are invoked in the reverse order of which they are declared in the web.xml
D. Random order
正解：A
解説: (Topexam メンバーにのみ表示されます)