Oracle Oracle Certifications 1Z0-858 Questions & Answers

• Question 171:

  Which method must be used to encode a URL passed as an argument to HttpServletResponse.sendRedirect when using URL rewriting for session tracking?

  A. ServletResponse.encodeURL

  B. HttpServletResponse.encodeURL

  C. ServletResponse.encodeRedirectURL

  D. HttpServletResponse.encodeRedirectURL

  Correct Answer: D

• Question 172:

  Users of your web application have requested that they should be able to set the duration of their sessions. So for example, one user might want a webapp to stay connected for an hour rather than the webapp's default of fifteen minutes; another user might want to stay connected for a whole day.

  Furthermore, you have a special login servlet that performs user authentication and retrieves the User object from the database. You want to augment this code to set up the user's specified session duration.

  Which code snippet in the login servlet will accomplish this goal?

  A. User user = // retrieve the User object from the databasesession.setDurationInterval(user.getSessionDuration());

  B. User user = // retrieve the User object from the databasesession.setMaxDuration(user.getSessionDuration());

  C. User user = // retrieve the User object from the databasesession.setInactiveInterval(user.getSessionDuration());

  D. User user = // retrieve the User object from the databasesession.setDuration(user.getSessionDuration());

  E. User user = // retrieve the User object from the databasesession.setMaxInactiveInterval(user.getSessionDuration());

  F. User user = // retrieve the User object from the databasesession.setMaxDurationInterval(user.getSessionDuration());

  Correct Answer: E

• Question 173:

  A web application contains a tag file called beta.tag in /WEB-INF/tags/alpha. A JSP page called sort.jsp exists in the web application and contains only this JSP code:

  1.

  <%@ taglib prefix="x"

  2.

  tagdir="/WEB-INF/tags/alpha" %>

  3.

  The sort.jsp page is requested.

  Which two are true? (Choose two.)

  A. Tag files can only be accessed using a tagdir attribute.

  B. The sort.jsp page translates successfully and invokes the tag defined by beta.tag.

  C. The sort.jsp page produces a translation error because a taglib directive must always have a uri attribute.

  D. Tag files can only be placed in /WEB-INF/tags, and NOT in any subdirectories of /WEB-INF/tags.

  E. The tagdir attribute in line 2 can be replaced by a uri attribute if a TLD referring to beta.tag is created and added to the web application.

  F. The sort.jsp page produces a translation error because the tagdir attribute on lines 1-2 specifies a directory other than /WEB-INF/tags, which is illegal.

  Correct Answer: BE

• Question 174:

  You are creating a JSP page to display a collection of data. This data can be displayed in several different ways so the architect on your project decided to create a generic servlet that generates a comma-delimited string so that various

  pages can render the data in different ways. This servlet takes on request parameter:

  objectID. Assume that this servlet is mapped to the URL pattern: /WEB- INF/data.

  In the JSP you are creating, you need to split this string into its elements separated by commas and generate an HTML

  list from the data.

  Which JSTL code snippet will accomplish this goal?

  A.

  • $ {item}

  B.

  • $ {item}

  C.

  • $ {item}

  D.

  • $ {item}

  Correct Answer: D

  • Question 175:

    Click the Exhibit button.

    Assuming the tag library in the exhibit is imported with the prefix stock, which custom tag invocation outputs the contents of the variable exposed by the quote tag?

    

    A. ${var}

    B. ${var}

    C. ${var}

    D. ${quote}

    E. <%= quote %>

    Correct Answer: D

  • Question 176:

    Which two are true about the JSTL core iteration custom tags? (Choose two.)

    A. It may iterate over arrays, collections, maps, and strings.

    B. The body of the tag may contain EL code, but not scripting code.

    C. When looping over collections, a loop status object may be used in the tag body.

    D. It may iterate over a map, but only the key of the mapping may be used in the tag body.

    E. When looping over integers (for example begin='1' end='10'), a loop status object may not be used in the tag body.

    Correct Answer: AC

  • Question 177:

    Assume a JavaBean com.example.GradedTestBean exists and has two attributes. The attribute name is of type java.lang.String and the attribute score is of type java.lang.Integer.

    An array of com.example.GradedTestBean objects is exposed to the page in a request-scoped attribute called results. Additionally, an empty java.util.HashMap called resultMap is placed in the page scope.

    A JSP page needs to add the first entry in results to resultMap, storing the name attribute of the bean as the key and the score attribute of the bean as the value.

    Which code snippet of JSTL code satisfies this requirement?

    A. ${resultMap[results[0].name] = results[0].score}

    B.

    C. ${results[0].value}

    D.

    E.

    Correct Answer: E

  • Question 178:

    Assume the custom tag my:errorProne always throws a java.lang.RuntimeException with the message "File not found."

    An error page has been configured for this JSP page.

    Which option prevents the exception thrown by my:errorProne from invoking the error page mechanism, and outputs the message "File not found" in the response?

    A. ${ex.message}

    B. ${ex.message}

    C. ${ex.message}

    D. ${ex.message}

    E. ${ex.message}

    Correct Answer: B

  • Question 179:

    A JSP page contains a taglib directive whose uri attribute has the value dbtags. Which XML element within the web application deployment descriptor defines the associated TLD?

    A. dbtags/WEB-INF/tlds/dbtags.tld

    B. dbtags/WEB-INF/tlds/dbtags.tld

    C. dbtags/WEB-INF/tlds/dbtags.tld

    D. dbtags/WEB-INF/tlds/dbtags.tld

    Correct Answer: D

  • Question 180:

    Assume that a news tag library contains the tags lookup and item:

    lookup Retrieves the latest news headlines and executes the tag body once for each headline. Exposes a NESTED page-scoped attribute called headline of type com.example.Headline containing details for that headline.

    item Outputs the HTML for a single news headline. Accepts an attribute info of type com.example.Headline containing details for the headline to be rendered.Which snippet of JSP code returns the latest news headlines in an HTML table, one per row?

    A. [table]

    B. [table]

    C. [table]

    D. [table]

    Correct Answer: C