Oracle Oracle Certifications 1Z0-858 Questions & Answers

• Question 101:

  You have been contracted to create a web site for a free dating service. One feature is the ability for one client to send a message to another client, which is displayed in the latter client's private page. Your contract explicitly states that security is a high priority. Therefore, you need to prevent cross-site hacking in which one user inserts JavaScript code that is then rendered and invoked when another user views that content. Which two JSTL code snippets will prevent cross-site hacking in the scenario above? (Choose two.)

  A. ${message}

  B.

  C.

  D. ${message}

  E.

  Correct Answer: BC

• Question 102:

  You are building a Front Controller using a JSP page and you need to determine if the user's session has NOT been created yet and perform some special processing for this case. Which scriptlet code snippet will perform this test?

  A. <% if ( request.getSession(false) == null ) {// special processing} %>

  B. <% if ( request.getHttpSession(false) == null ) {// special processing} %>

  C. <% if ( requestObject.getSession(false) == null ) {// special processing} %>

  D. <% if ( requestObject.getHttpSession(false) == null ) {// special processing} %>

  Correct Answer: A

• Question 103:

  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 104:

  Given:

  6.

  <% int[] nums = {42, 420, 4200};

  7.

  request.setAttribute("foo", nums); %>

  Which two successfully translate and result in a value of true? (Choose two.)

  A. ${true or false}

  B. ${requestScope[foo][0] > 500}

  C. ${requestScope['foo'][1] = 420}

  D. ${(requestScope['foo'][0] lt 50) andand (3 gt 2)}

  Correct Answer: AD

• Question 105:

  Click the Exhibit button. Given:

  11.

  <% com.example.Advisor advisor = new com.example.Advisor(); %>

  12.

  <% request.setAttribute("foo", advisor); %>

  Assuming there are no other "foo" attributes in the web application, which three are valid EL expressions for retrieving the advice property of advisor? (Choose three.)

  

  A. ${foo.advice}

  B. ${request.foo.advice}

  C. ${requestScope.foo.advice}

  D. ${requestScope[foo[advice]]}

  E. ${requestScope["foo"]["advice"]}

  F. ${requestScope["foo"["advice"]]}

  Correct Answer: ACE

• Question 106:

  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}

  Correct Answer: D

• Question 107:

  You are building a dating web site. The client's date of birth is collected along with lots of other information. You have created an EL function with the signature: calcAge(java.util.Date):int and it is assigned to the name, age, in the namespace, funct. In one of your JSPs you need to print a special message to clients who are younger than 25. Which EL code snippet will return true for this condition?

  A. ${calcAge(client.birthDate) < 25}

  B. ${calcAge[client.birthDate] < 25}

  C. ${funct:age(client.birthDate) < 25}

  D. ${funct:age[client.birthDate] < 25}

  E. ${funct:calcAge(client.birthDate) < 25}

  F. ${funct:calcAge[client.birthDate] < 25}

  Correct Answer: C

• Question 108:

  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)}

  Correct Answer: ACE

• Question 109:

  Assume the tag handler for a st:simple tag extends SimpleTagSupport. In what way can scriptlet code be used in the body of st:simple?

  A. set the body content type to JSP in the TLD

  B. Scriptlet code is NOT legal in the body of st:simple.

  C. add scripting-enabled="true" to the start tag for the st:simple element

  D. add a pass-through Classic tag with a body content type of JSP to the body of st:simple, and place the scriptlet code in the body of that tag

  Correct Answer: B

• Question 110:

  Which statement is true if the doStartTag method returns EVAL_BODY_BUFFERED ?

  A. The tag handler must implement BodyTag.

  B. The doAfterBody method is NOT called.

  C. The setBodyContent method is called once.

  D. It is never legal to return EVAL_BODY_BUFFERED from doStartTag.

  Correct Answer: C