複選題
114 Given a header in an HI IP request:
X-Retries: 4
A Which two retrieve the value of the header from a given HttpServletRequest request? (Choose two )
(A) request-getHeader("X-Retries")
(B) request.getlntHeader("X-Retries")
(C) request.getRequestHeader("X-Retries")
(D) request.getHeaders{"X-Retries").get(0)
(E) request.getRequestHeaders("X-Retries").get(0)

複選題110 Which two security mechanisms can be directed through a sub-element of the ＜user-dataconstraint＞ element in a web application deployment descriptor? (Choose two.) (A) authorization (B) data integrity (C) confidentiality (D) authentication

111 Users of your web application have requested that they should be able to set the duration of their sessions. So for example, one user might want a webapp to stay connected for an hour rather than the webapp's default of fifteen minutes; another user might want to stay connected for a whole day. Furthermore, you have a special login servlet that performs user authentication and retrieves the object from the database. You want to augment this code to set up the user's specified session duration. Which code snippet in the login servlet will accomplish this goal? (A) User user = / / retrieves the user objects object from the databasesession.setDurationInterval (user.getSessionDuration()); (B) User user = / / retrieves the User objects from the databasesession.setInactiveInterval (user.getSessionDuration()); (C) User user = / / retrieves the user objects object from the databasesession.setInactiveInterval (user.get.SessionDuration()); (D) User user = / / retrieves the user objects object from the databasesession.setDuration (user.getSessionDuration()); (E) User user = / / retrieves the user objects object from the databasesession.setMaxInactiveInterval (user.getSessionDuration());

112 View the exhibit. Assume the tag library in the exhibit is placed in a web application in the path /WEBINF/tld/example.tld.1.2. ＜ex:hello /＞ Which JSP code, inserted at line 1, completes the JSP code to invoke the hello tag? (A) ＜%@ taglib prefix="ex" uri="/WEB-INF/tld" %＞ (B) ＜%@ taglib uri="/WEB-INF/tld/example.tld" %＞ (C) ＜%@ taglib prefix="ex"uri:="http://localhost:8080/tld/example.tld" % ＞ (D) ＜%@ taglib prefix="ex"uri:="http://example.com/tld/example" % ＞

複選題113 Given:  3. class MyServlet extends HttpServlet {  4. public void doPut(HttpServletRequest req,     HttpServletResponse resp)     throws ServletException, IOException {  5. // servlet code here ...  26. }  27. } If the DD contains a single security constraint associated with MyServlet and its only ＜http-method＞ tags and ＜auth-constraint＞ tags are: ＜http-method＞GET＜/http-method＞ ＜http-method＞PUT＜/http-method＞ ＜auth-constrain＞Admin＜/auth-constrain＞ Which four requests would be allowed by the container? (Choose four) (A) A user whose role is Admin can perform a PUT. (B) A user whose role is Admin can perform a GET. (C) A user whose role is Admin can perform a POST. (D) A user whose role is Member can perform a PUT. (E) A user whose role is Member can perform a POST.

複選題115 Your web application uses a simple architecture in which servlets handle requests and then forward to a JSP using a request dispatcher. You need to pass information calculated in the servlet to the JSP for view generation. This information must NOT be accessible to any other servlet, JSP or session in the webapp. Which two techniques can you use to accomplish this goal? (Choose two) (A) Add attributes to the session object. (B) Add attributes on the request object. (C) Add parameters on the request object. (D) Use the pageContext object to add request attributes. (E) Add parameters to the JSP's URL when generating the request dispatcher.

複選題116 A servlet class is injected with a JDBC data source. After injection has occurred, the servlet needs to create a cache out of some of the data in the database, so as to improve responsiveness. Which two methods can host the cache creation code? (Choose two) (A) Servlet.init() (B) Servlet.destroy() (C) A method annotated with @Init (D) A method annotated with @PostConstruct (E) A method annotated with @PreDestroy

117 Given the fragment from Java EE deployment descriptor: 341. ＜error-page＞ 342. ＜exception-type＞java.lang.Throwable＜/exception-type＞ 343. ＜location＞/mainError.jsp＜/location＞ 344. ＜/error-page＞ 345. ＜error-page＞ 346. ＜exception-type＞java.lang.ClassCastException＜/exception-type＞ 347. ＜location＞/castError.jsp＜/location＞ 348. ＜/error-page＞ If the web application associated with the fragment above throws a ClassCastException. Which statement is true? (A) The deployment descriptor is invalid. (B) The container invokes mainError.jsp (C) The container invokes castError.jsp (D) Neither mainError.jsp nor castError.jsp is invoked.

複選題118 You are creating a new ISP page and you need to execute some code that acts when thepage is first executed, but only once. Which three are possible mechanisms for performing this initialization code? (Choose three) (A) In the init method. (B) In the jspInit method. (C) In the constructor of the JSP's Java code. (D) In a JSP declaration, which includes an initializer block. (E) In a JSP declaration, which includes a static initializer block.

119 A web application wants to expose to its clients an operation that results in a transaction being performed across several systems, for example the transfer of money from one bank account to another Which HTTP method should it use? (A) GET (B) HEAD (C) OPT IONS (D) POST

120 Which code snippet specifies the metadata for a servlet with: (i) url mapping "/mytest"' (ii) Initial parameter with name "debug" and value "10"' (iii) Support asynchronous operation? (A) @WebServlet("/mytest")@InitParam(name-"debug" va1ue = "10")@Asynchronouspublic class TestServlet extends HttpServlet {} (B) @WebServlet ("/myset")@WebParam(name = "debug" value = "10")Public class testServlet {} (C) @WebServlet (urlPatterns = { / "mytest"},Initparams = {@InitParam (name = "debug", value = "10") }, supportAsync = true)public class TestServlet extends HttpServlet {} (D) @WebServlet (urlPatterns = { / "mytest"},Initparams = {@InitParam (name = "debug", value = "10") }, asyncSupported = true)public class TestServlet extends HttpServlet {} (E) @WebServlet (urlPatterns = { / "mytest"},Initparam = @WebInitParam (name = "debug", value "10"), supportAsync = true)public class testServlet {}