A Client wants to retrieve a representation of a resource, for example an HTML page, allowing a cached version to be returning by an intermediary such a proxy server.
Which HTTP method should it use?
Given the java code snippet in contextInitialized method of a ServletContextListner:
ServletRegistration.Dynamic sr = (ServletRegistration.Dynamic)sc.addServlet ("myServlet", myServletClass); sr.addMapping("/abc"); sr.setServletSecurityElement(servletSecurityElement); sr.addMapping("/def"); Which statement is true?
Click the Exhibit button.
Given the HTML form:
1. <html>
2. <body>
3. <form action="submit.jsp">
4. Name: <input type="text" name="i1"><br>
5. Price: <input type="text" name="i2"><br>
6. <input type="submit">
7. </form>
8. </body>
9. </html>
Assume the product attribute does NOT yet exist in any scope.
Which code snippet, in submit.jsp, instantiates an instance of com.example.Product that contains the results of the form submission?

Which two are valid for transport for the enum TransportGuarantee in
javax.servlet.annotation.ServletSecurity? (Choose two)
You are creating a new ISP page and you need to execute some code that acts when the- page is first executed, but only once. Which three are possible mechanisms for performing this initialization code? (Choose three)
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?