Oracle Oracle Certifications 1Z0-858 Questions & Answers

• Question 181:

  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?

  A.

  B. 12

  C. The JSP fails to execute.

  D. <% int i = 12 %><%= i %>

  Correct Answer: C

• Question 182:

  You are creating a new JSP page and you need to execute some code that acts when the page 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.

  Correct Answer: BDE

• Question 183:

  You are writing a JSP that includes scriptlet code to declare a List variable and initializes that variable to an ArrayList object. Which two JSP code snippets can you use to import these list types? (Choose two.)

  A. <%! import java.util.*; %>

  B. <%! import java.util.List;import java.util.ArrayList; %>

  C. <%@ page import='java.util.List'import='java.util.ArrayList' %>

  D. <%@ import types='java.util.List'types='java.util.ArrayList' %>

  E. <%@ page import='java.util.List,java.util.ArrayList' %>

  F. <%@ import types='java.util.List,java.util.ArrayList' %>

  Correct Answer: CE

• Question 184:

  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/salesmgr-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. <%@ include file='/WEB-INF/html/sales-mgr- menu.html' %>

  C. <% if ( request.isUserInRole("SalesManager") ) { %><% } %>

  D.

  Correct Answer: A

• Question 185:

  For debugging purposes, you need to record how many times a given JSP is invoked before the user's session has been created. The JSP's destroy method stores this information to a database. Which JSP code snippet keeps track of this count for the lifetime of the JSP page?

  A. <%! int count = 0; %><% if ( request.getSession(false) == null ) count++; %>

  B. <%@ int count = 0; %><% if ( request.getSession(false) == null ) count++; %>

  C. <% int count = 0;if ( request.getSession(false) == null ) count++; %>

  D. <%@ int count = 0;if ( request.getSession(false) == null ) count++; %>

  E. <%! int count = 0;if ( request.getSession(false) == null ) count++; %>

  Correct Answer: A

• Question 186:

  For manageability purposes, you have been told to add a "count" instance variable to a critical JSP Document so that a JMX MBean can track how frequent this JSP is being invoked. Which JSP code snippet must you use to declare this instance variable in the JSP Document?

  A. int count = 0;

  B. <%! int count = 0; %>

  C. int count = 0;

  D. int count = 0;

  Correct Answer: A

• Question 187:

  In a JSP-centric web application, you need to create a catalog browsing JSP page. The catalog is stored as a List object in the catalog attribute of the webapp's ServletContext object. Which scriptlet code snippet gives you access to the catalog object?

  A. <% List catalog = config.getAttribute("catalog"); %>

  B. <% List catalog = context.getAttribute("catalog"); %>

  C. <% List catalog = application.getAttribute("catalog"); %>

  D. <% List catalog = servletContext.getAttribute("catalog"); %>

  Correct Answer: C

• Question 188:

  Which element of the web application deployment descriptor defines the servlet class associated with a servlet instance?

  A.

  B.

  C.

  D.

  E.

  F.

  Correct Answer: E

• Question 189:

  Within the web application deployment descriptor, which defines a valid JNDI environment entry?

  A. java.lang.Booleantrue

  B. param/MyExampleStringThis is an Example

  C. param/MyExampleStringint10

  D. param/MyExampleStringjava.lang.StringThis is an Example

  Correct Answer: D

• Question 190:

  Which three are described in the standard web application deployment descriptor? (Choose three.)

  A. session configuration

  B. MIME type mappings

  C. context root for the application

  D. servlet instance pool configuration

  E. web container default port bindings

  F. ServletContext initialization parameters

  Correct Answer: ABF