Oracle 1Z0-858 Online Practice Questions and Exam Preparation

Oracle 1Z0-858 Online Questions & Answers

• Question 51:

  A developer is designing a web application that must support multiple interfaces, including:

  an XML web service for B2B HTML for web-based clients WML for wireless customers

  Which design pattern provides a solution for this problem?

  A. Session Facade
  B. Business Delegate
  C. Data Access Object
  D. Model-View-Controller
  E. Chain of Responsibility
  D. Model-View-Controller

• Question 52:

  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:

  10.

  11.

  14.

  15.

  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

• Question 53:

  What is true about Java EE authentication mechanisms?

  A. If your deployment descriptor correctly declares an authentication type of CLIENT_CERT, your users must have a certificate from an official source before they can use your application.
  B. If your deployment descriptor correctly declares an authentication type of BASIC, the container automatically requests a user name and password whenever a user starts a new session.
  C. If you want your web application to support the widest possible array of browsers, and you want to perform authentication, the best choice of Java EE authentication mechanisms is DIGEST.
  D. To use Java EE FORM authentication, you must declare two HTML files in your deployment descriptor, and you must use a predefined action in the HTML file that handles your user's login.
  D. To use Java EE FORM authentication, you must declare two HTML files in your deployment descriptor, and you must use a predefined action in the HTML file that handles your user's login.

• Question 54:

  Which two are characteristics of the Front Controller pattern? (Choose two.)

  A. It simplifies remote interfaces to distributed objects.
  B. It promotes cleaner application partitioning and encourages reuse.
  C. It provides an initial point of contact for handling all related requests.
  D. It reduces maintainability due to the increased complexity of the design.
  E. It provides loosely coupled handlers that can be combined in various permutations.
  B. It promotes cleaner application partitioning and encourages reuse.
  C. It provides an initial point of contact for handling all related requests.

• Question 55:

  Your IT department is building a lightweight Front Controller servlet that invokes an application logic object with the interface:

  public interface ApplicationController { public String invoke(HttpServletRequest request) }

  The return value of this method indicates a symbolic name of the next view. From this name, the Front Controller servlet looks up the JSP URL in a configuration table. This URL might be an absolute path or a path relative to the current request. Next, the Front Controller servlet must send the request to this JSP to generate the view. Assume that the servlet variable request is assigned the current HttpServletRequest object and the variable context is assigned the webapp's ServletContext.

  Which code snippet of the Front Controller servlet accomplishes this goal?

  A. Dispatcher view= context.getDispatcher(viewURL);view.forwardRequest(request, response);
  B. Dispatcher view= request.getDispatcher(viewURL);view.forwardRequest(request, response);
  C. RequestDispatcher view= context.getRequestDispatcher(viewURL);view.forward(request, response);
  D. RequestDispatcher view= request.getRequestDispatcher(viewURL);view.forward(request, response);
  D. RequestDispatcher view= request.getRequestDispatcher(viewURL);view.forward(request, response);

• Question 56:

  What is true about Java EE authentication mechanisms?

  A. If your deployment descriptor correctly declares an authentication type of CLIENT_CERT, your users must have a certificate from an official source before they can use your application.
  B. If your deployment descriptor correctly declares an authentication type of BASIC, the container automatically requests a user name and password whenever a user starts a new session.
  C. If you want your web application to support the widest possible array of browsers, and you want to perform authentication, the best choice of Java EE authentication mechanisms is DIGEST.
  D. To use Java EE FORM authentication, you must declare two HTML files in your deployment descriptor, and you must use a predefined action in the HTML file that handles your user's login.
  D. To use Java EE FORM authentication, you must declare two HTML files in your deployment descriptor, and you must use a predefined action in the HTML file that handles your user's login.

• Question 57:

  Click the Exhibit button.

  The attribute "name" has a value of "Foo,"

  What is the result if this tag handler's tag is invoked?

  

  A. Foo
  B. done
  C. Foodone
  D. An exception is thrown at runtime.
  E. No output is produced from this code.
  F. Compilation fails because of an error in this code.
  A. Foo

• Question 58:

  Given:

  11.

  <%

  12.

  request.setAttribute("vals", new String[]{"1","2","3","4"});

  13.

  request.setAttribute("index", "2");

  14.

  %>

  15.

  <%-- insert code here --%>

  Which three EL expressions, inserted at line 15, are valid and evaluate to "3"? (Choose three.)

  A. ${vals.2}
  B. ${vals["2"]}
  C. ${vals.index}
  D. ${vals[index]}
  E. ${vals}[index]
  F. ${vals.(vals.index)}
  G. ${vals[vals[index-1]]}
  B. ${vals["2"]}
  D. ${vals[index]}
  G. ${vals[vals[index-1]]}

• Question 59:

  Given:

  11.

  <% java.util.Map map = new java.util.HashMap();

  12.

  request.setAttribute("map", map);

  13.

  map.put("a", "b");

  14.

  map.put("b", "c");

  15.

  map.put("c", "d"); %>

  16.

  <%-- insert code here --%>

  Which three EL expressions, inserted at line 16, are valid and evaluate to "d"? (Choose three.)

  A. ${map.c}
  B. ${map[c]}
  C. ${map["c"]}
  D. ${map.map.b}
  E. ${map[map.b]}
  F. ${map.(map.b)}
  A. ${map.c}
  C. ${map["c"]}
  E. ${map[map.b]}

• Question 60:

  Given:

  11.

  public class MyServlet extends HttpServlet {

  12.

  public void service(HttpServletRequest request,

  13.

  HttpServletResponse response)

  14.

  throws ServletException, IOException {

  15.

  // insert code here

  16.

  }

  17.

  }

  and this element in the web application's deployment descriptor:

  302 /html/error.html

  Which, inserted at line 15, causes the container to redirect control to the error.html resource?

  A. response.setError(302);
  B. response.sendError(302);
  C. response.setStatus(302);
  D. response.sendRedirect(302);
  E. response.sendErrorRedirect(302);
  B. response.sendError(302);