Oracle 1Z0-899 Online Practice Questions and Exam Preparation

Oracle 1Z0-899 Online Questions & Answers

• Question 41:

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

• Question 42:

  You have a use in your web application that adds several session-scoped attributes. At the end of the use case, one of these objects, the manage attribute, is removed and then it needs to decide which of the other session-scoped attributes to remove.

  How can this goal be accomplished?

  A. The object of the manager attribute should implement the HttpSessionBindingListener and it should call the removeAttribute method on the appropriate session attributes.
  B. The object of the manager attribute should implement the HttpSessionListenar and it should call the removeAttribute method on the appropriate session attributes.
  C. The object of the manager attribute should implement the HttpSessionBindingListener rind it should call the deleteAttribute method on the appropriate session attributes.
  D. The object of the manager attribute should implement the HttpsessionListener and it should call the deleteAttribute method on the appropriate session attributes.
  A. The object of the manager attribute should implement the HttpSessionBindingListener and it should call the removeAttribute method on the appropriate session attributes.

• Question 43:

  You are building a dating service web site. Part of the form to submit a client's profile is a group of radio buttons for the person's hobbies:

  20.

  Hiking
  

  21.

  Sking
  

  22.

  SCUBA
  

  23.

  >

  After the user submits this form, a confirmation screen is displayed with these hobbies listed. Assume that an application-scoped hobbies, holds a map between the hobby enumerated type and the display name.

  Which EL code snippet will display Nth element of the user's selected hobbles?

  A. ${hobbies [hobbyEnum[N]}
  B. ${hobbies [paramValues.hobbyEnum[N]]}
  C. ${hobbies [paramValues @ `hobbyEnum' @N]
  D. ${hobbies.get(paramValues.hobbyEnum[N]) }
  E. ${hobbies [paramValues.hobbyEnum.get(N)] }
  B. ${hobbies [paramValues.hobbyEnum[N]]}

• Question 44:

  When using the @WebListener annotation, the class on which the annotation is applied to must also implement at least one o the following interfaces (Choose two):

  A. RequestListener
  B. AttributeListener
  C. ServletContextListener
  D. HttpSessionListener
  E. SessionAttributeListener
  F. AsyncListener
  C. ServletContextListener
  D. HttpSessionListener

  ---

  @WebListener The main task of the listener is to listen the particular events and process your own task on that event. For example, if you want to initialize a database connection before your application starts, ServletContextListener will be implemented to do that. Another good example is -when you want to do some task on the creation and destruction of a session. For this purpose you need to implement HttpSessionListener.

• Question 45:

  Given the element from the web application deployment descriptor:

  /main/page1.jsp true

  And given that /main/page1.jsp contains:

  <% int i = 12; %>

  <%= i %>

  What is the result?

  B. l2
  C. The JSP fails to execute.
  D. < b>
  C. The JSP fails to execute.

• Question 46:

  View the Exhibit.

  

  Which two technologies would be suitable for use as Front Controller elements? (Choose two)

  A. JSP
  B. Servlet
  C. Filter
  D. POJO
  E. Custom Tag
  A. JSP
  B. Servlet

  ---

  *

  Servlet only. Works well when:

  Output is a binary type. E.g.: an image

  There is no output. E.g.: you are doing forwarding or redirection as in Search Engine example.

  Format/layout of page is highly variable. E.g.: portal.

  *

  JSP only. Works well when:

  Output is mostly character data. E.g.: HTML

  Format/layout mostly fixed.

  *

  Combination (MVC architecture). Needed when:

  A single request will result in multiple substantially differentlooking results. You have a large development team with different team members doing the Web development and the business logic. You perform complicated data processing, but

  have a relatively fixed layout

  Incorrect:

  Not D: In computing software, POJO is an acronym for Plain Old Java Object. The name is used to emphasize that a given object is an ordinary Java Object, not a special object. The term "POJO" is mainly used to denote a Java object which

  does not follow any of the major Java object models, conventions, or frameworks. The term continues the pattern of older terms for technologies that do not use fancy new features.

• Question 47:

  Which java code snippet roles "MANAGER" and "EMPLOYEE" in a given application?

  A. @DeclareRoles({ "MANAGER", "EMPLOYEE" }) public class MyServlet extends HttpServlet {}
  B. @SecurityRoles({ "MANAGER", "EMPLOYEE" }) public class MyServlet extends HttpServlet {}
  C. @DeclareRoles("MANAGER") @DeclareRoles("EMPLOYEE") public class MyServlet extends HttpServlet {}
  D. @DeclareRole("MANAGER") @DeclareRole("EMPLOYEE") public class MyServlet extends HttpServlet {}
  A. @DeclareRoles({ "MANAGER", "EMPLOYEE" }) public class MyServlet extends HttpServlet {}

  ---

  *

  The syntax for declaring more than one role is as shown in the following example:

  @DeclareRoles({"Administrator", "Manager", "Employee"})

  *

  @DeclareRoles

  This annotation declares the security roles defined by the application.

  *

  javax.annotation.security

  Annotation Type DeclareRoles

  @Documented

  @Retention(value=RUNTIME)

  @Target(value=TYPE)

  public @interface DeclareRoles

  Used by application to declare roles. It can be specified on a class.

• Question 48:

  Which describes a trigger that causes a call to an AsyncListener?

  A. Completion of processing
  B. Receipt of a new request from the same client
  C. Addition of a new filter to the processing stream for this request
  D. Completion of each timer interval
  B. Receipt of a new request from the same client

• Question 49:

  To add a servlet to a context that has not been declared either via annotation or via the descriptor, during context initialization time the following API can be used (Choose three.)

  A. servletContext.addServlet("myServletName", "MyServlet");
  B. servletContext.addServlet( ()getClass().getClassLoader().getClassLoader().loaderClass("MyServlet"));
  C. servletContext.addServlet(myServlet);
  D. servletContext.addServlet( ("myServletName", )gerClass().getClassLoader ().loaderClass("myServlet"));
  E. servletContext.addServlet("myServletName", MyServlet);
  A. servletContext.addServlet("myServletName", "MyServlet");
  D. servletContext.addServlet( ("myServletName", )gerClass().getClassLoader ().loaderClass("myServlet"));
  E. servletContext.addServlet("myServletName", MyServlet);

  ---

  addServlet

  ServletRegistration.Dynamic addServlet(java.lang.String servletName, java.lang.Class servletClass)

  Adds the servlet with the given name and class type to this servlet context. The registered servlet may be further configured via the returned ServletRegistration object.

  Parameters:

  servletName - the name of the servlet

  servletClass - the class object from which the servlet will be instantiated

• Question 50:

  To take advantage of the capabilities of modern browsers that use web standards, such as XHTML and CSS, your web application is being converted from simple JSP pages to JSP Document format. However, one of your JSPs, /scripts/ screenFunctions.jsp, generates a JavaScript file. This file is included in several web forms to create screen-specific validation functions and are included in these pages with the following statement:

  

  Which JSP code snippet declares that this JSP Document is a JavaScript file?

  E. No declaration is needed because the web form XHTML page already declares the MIME type of the / scripts/screenFunctions.jsp file in the tag.
  D