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

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.

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 {}

121 You are building JSP pages that have a set of menus that are visible based on a user's security role. These menus are hand-crafted by your web-design team; for example, the SalesManager role has a menu in the file /WEB-INF/html/sales-mgr-menu.html. Which JSP code snippet should be used to make this menu visible to the user? (A) ＜% if (request.isUserInRole ("SalesManager") ) { %＞＜%@ include file=' /WEB-INF/html/sales-mgr-menu.html' %＞＜% } %＞ (B) ＜jsp:if test= 'request.isUserInRole ("SalesManager") '＞＜%@ include file '/WEB-INF/html/sales-mgr-menu.html' /%＞＜/jsp:if＞ (C) ＜% if ( request.isUserInRole("SalesManager") ) { %＞＜jsp:include file='/WEB-INF/html/sales-mgr-menu.html' /＞＜% } %＞ (D) ＜jsp:if test= 'request.isUserInRole("SalesManager")'＞＜jsp:include file '/WEB-INF/html/sales-mgr-menu.html' /＞＜/jsp:if＞

122 In your web application, you need to execute a block of code whenever the session object is first created. Which design will accomplish this goal? (A) Create an HttpSessionListener class and implement the sessionInitialized method with that block of code. (B) Create an HttpSessionActivationListener class and implement the sessionCreated method with that block of code. (C) Create a Filter class, call the getSession(false) method, and if the result was null, then execute that block of code. (D) Create an HttpSessionListener class and implement the sessionCreated method with that block of code. (E) Create a Filter class, call the getSession(true) method, and if the result was NOT null, then execute that block of code.

123 A popular Ajax framework and its companion widget library contain several hundreds of files of different types (.js, .ess, .html). Your company has mandated that all its web applications use only specific versions of this framework approved by IT and repackaged internally as jar files. Furthermore, web applications should only include the entire jar, without subsetting or modification. Where should the framework's files be placed inside a jar file to enable this kind of reuse? (A) under resources (B) under META-INF/resources (C) under META-INF/web-contents (D) under WEB-INF/resources

124 Which JSTL code snippet can be used to import content from another web resource? (A) ＜c:import url = "foo.jsp"/＞ (B) ＜c:import page = "foo.jsp"/＞ (C) ＜c:include url = "foo.jsp"/＞ (D) ＜c:include page = "foo.jsp"/＞ (E) Importing cannot be done in JSTL. A standard action must be used instead.

125 A method call inside your servlet has thrown an IOException resulting from a lost network connection to a necessary resource. The servlet has determined that it will be unable to operate successfully for a few minutes, but expects to be able to resume operation after that period. How should this situation handled? (A) The servlet should re-throw the exception to the web container. (B) The servlet should throw a servletException to the web container. (C) The servlet should throw an unavailableException to the web container. (D) The servlet should redirect to an error page that reports the exception message. (E) The servlet should retry the request until the method returns successfully.