1Z1-899 試験問題を無料オンラインアクセス

Which statement is true about web container session management?

• A.To activate URL rewriting, the developer must use the HttpServletResponse.setURLRewriting method.
• B.If the web application uses HTTPS, then the web container may use the data on the HTTPS request stream to identify the client.
• C.Access to session-scoped attributes is guaranteed to be thread-safe by the web container.
• D.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.

You want to create a filter for your web application and your filter will implement
.servlet.Filter.
Which two statements are true? (Choose two)

• A.Your filter class must also implement javax.sarvlat.FilterChain.
• B.Your filter class must implement an init method and a destroy method.
• C.Your filter class must implement a doFilter method that takes, among other things, an HttpServletRequest object and an HttpServletresponse object.
• D.The method that your filter invokes on the object it received that implementsjavax - servlet.Filterchain can invoke either another filter or a servlet.
• E.When your filter chains to the next filter, it should pass the same arguments it received in its doFilter method.

As a convenience feature, your web pages include an Ajax request every five minutes to a special servlet that monitors the age of the user's session. The client-side JavaScript that handles the Ajax callback displays a message on the screen as the session ages. The Ajax call does NOT pass any cookies, but it passes the session ID in a request parameter called sessionID. In addition, assume that your webapp keeps a hasmap of session objects by the ID. Here is a partial implementation of this servlet:
10. public class SessionAgeServlet extends HttpServlet {
11. public void service(HttpServletRequest request, HttpServletResponse) throws IOException {
12. String sessionID = request.getParameter("sessionID");
13. HttpSession session = getSession(sessionID);
14. long age = // your code here
15. response.getWriter().print(age);
16. }
... // more code here
47. }
Which code snippet on line 14, will determine the age of the session?

• A.session.getMaxInactiveInterval() - session.getCreationTime();
• B.session.getLastAccessed().getTime() - session.getCreationTime().getTime();
• C.session.getLastAccessed() - session.getCreationTime();
• D.session.getMaxInactiveInterval();
• E.session.getLastAccessedTime() - session.getCreationTime();
• F.session.getLastAccessedTime().getTime() - session.getCreationTime().getTime();

Given:
1. <% int[] nums = {42,420,4200};
2. request.setAttribute("foo", nums); %>
3. ${5 + 3 It 6}
4. S(requestScope['foo'][0] ne 10 div0>
5. ${10 div 0}
What is the result?

• A.An exception is thrown
• B.true true Infinity
• C.Compilation or translation fails
• D.false true Infinity
• E.false true 0
• F.true true
• G.false true

Which of the following are attributes of the annotation javax.servlet.annotation.WebFilter?
(i) Name
(ii) servletNames
(iii) urlPatterns
(iv) dispatcherTypes
(v) supportAsync

• A.(iii) only
• B.(iii), (iv) and (v)
• C.(ii), (iii) and (iv)
• D.(iii) and (iv)
• E.(ii), (iii), (iv) and (v)