Oracle 1Z0-858 Online Questions & Answers

• Question 21:

  Which two are characteristics of the Transfer Object design pattern? (Choose two.)

  A. It reduces network traffic by collapsing multiple remote requests into one.
  B. It increases the complexity of the remote interface by removing coarse-grained methods.
  C. It increases the complexity of the design due to remote synchronization and version control issues.
  D. It increases network performance introducing multiple fine-grained remote requests which return very small amounts of data.
  A. It reduces network traffic by collapsing multiple remote requests into one.
  C. It increases the complexity of the design due to remote synchronization and version control issues.

• Question 22:

  Which two directives are applicable only to tag files? (Choose two.)

  A. tag
  B. page
  C. taglib
  D. include
  E. variable
  A. tag
  E. variable

• Question 23:

  A developer has created a web application that includes a servlet for each use case in the application. These servlets have become rather difficult to maintain because the request processing methods have become very large. There is also common processing code in many servlets because these use cases are very similar. Which two design patterns can be used together to refactor and simplify this web application? (Choose two.)

  A. Proxy
  B. View Helper
  C. Front Controller
  D. Session Facade
  E. Business Delegate
  F. Model-View-Controller
  C. Front Controller
  F. Model-View-Controller

• Question 24:

  You have a simple web application that has a single Front Controller servlet that dispatches to JSPs to generate a variety of views. Several of these views require further database processing to retrieve the necessary order object using the orderID request parameter. To do this additional processing, you pass the request first to a servlet that is mapped to the URL pattern /WEB-INF/retreiveOrder.do in the deployment descriptor. This servlet takes two request parameters, the orderID and the jspURL. It handles the database calls to retrieve and build the complex order objects and then it dispatches to the jspURL.

  Which code snippet in the Front Controller servlet dispatches the request to the order retrieval servlet?

  A. request.setAttribute("orderID", orderID);request.setAttribute("jspURL", jspURL);RequestDispatcher view= context.getRequestDispatcher("/WEB- INF/retreiveOrder.do");view.forward(request, response);
  B. request.setParameter("orderID", orderID);request.setParameter("jspURL", jspURL);Dispatcher view= request.getDispatcher("/WEB-INF/retreiveOrder.do");view.forwardRequest(request, response);
  C. String T="/WEB-INF/retreiveOrder.do?orderID=%dandjspURL=%s";String url = String.format(T, orderID, jspURL);RequestDispatcher view= context.getRequestDispatcher(url);view.forward(request, response);
  D. String T="/WEB-INF/retreiveOrder.do?orderID=%dandjspURL=%s";String url = String.format(T, orderID, jspURL);Dispatcher view= context.getDispatcher(url);view.forwardRequest(request, response);
  C. String T="/WEB-INF/retreiveOrder.do?orderID=%dandjspURL=%s";String url = String.format(T, orderID, jspURL);RequestDispatcher view= context.getRequestDispatcher(url);view.forward(request, response);

• Question 25:

  You are creating an error page that provides a user-friendly screen whenever a server exception occurs. You want to hide the stack trace, but you do want to provide the exception's error message to the user so the user can provide it to the customer service agent at your company. Which EL code snippet inserts this error message into the error page?

  A. Message: ${exception.message}
  B. Message: ${exception.errorMessage}
  C. Message: ${request.exception.message}
  D. Message: ${pageContext.exception.message}
  E. Message: ${request.exception.errorMessage}
  F. Message: ${pageContext.exception.errorMessage}
  D. Message: ${pageContext.exception.message}

• Question 26:

  Given tutorial.jsp:

  2.

  EL Tutorial

  3.

  Example 1

  4.

  5.

  Dear ${my:nickname(user)}

  6.

  Which, when added to the web application deployment descriptor, ensures that line 5 is included verbatim in the JSP output?

  A. *.jsptrue
  B. *.jsptrue
  C. *.jsp
  D. *.jsptrue
  E. *.jsptrue
  D. *.jsptrue

• Question 27:

  Given the JSP code:

  10.

  11.

  12.

  13.

  Hello, ${customer.title} ${customer.lastName}, welcome

  14.

  to Squeaky Beans, Inc.

  15.

  16.

  Which three types of JSP code are used? (Choose three.)

  A. Java code
  B. template text
  C. scripting code
  D. standard action
  E. expression language
  B. template text
  D. standard action
  E. expression language

• Question 28:

  Which defines the welcome files in a web application deployment descriptor?

  A. /welcome.jsp/ index.html
  B. welcome.jspindex.html
  C. welcome.jspindex.html
  D. /welcome.jsp/index.html
  E. Welcomewelcome.jspIndexindex.html
  B. welcome.jspindex.html

• Question 29:

  Place the servlet name onto every request URL, relative to the web application context root, that will invoke that servlet. Every request URL must be filled.

  Select and Place:

  

  

• Question 30:

  Which is true about the web container request processing model?

  A. The init method on a filter is called the first time a servlet mapped to that filter is invoked.
  B. A filter defined for a servlet must always forward control to the next resource in the filter chain.
  C. Filters associated with a named servlet are applied in the order they appear in the web application deployment descriptor file.
  D. If the init method on a filter throws an UnavailableException, then the container will make no further attempt to execute it.
  C. Filters associated with a named servlet are applied in the order they appear in the web application deployment descriptor file.