310-083 Exam Training Practice Tests (SUN Sun Certified Web Component Developer for J2EE 5)]

Question 1

The tl:taskList and tl:task tags output a set of tasks to the response and are used as follows:
1 1. <tl:taskList>
1 2. <tl:task name="Mow the lawn" />
1 3. <tl:task name="Feed the dog" />
1 4. <tl:task name="Do the laundry" />
1 5. </tl:taskList>
The tl:task tag supplies information about a single task while the tl:taskList tag does the final output. The tag handler for tl:taskList is TaskListTag. The tag handler for tl:task is
TaskTag. Both tag handlers extend BodyTagSupport.
Which allows the tl:taskList tag to get the task names from its nested tl:task children?

A. In the TaskListTag.doStartTag method, call getChildTags() on the PageContext and iterate through the results. Cast each result to a TaskTag and call getName(). B. Create an addTaskName method in TaskListTag. Have the TaskListTag.doStartTag method, return BodyTag.EVAL_BODY_BUFFERED. In the TaskTag.doStartTag method, call findAncestorWithClass() on the PageContext, passing TaskListTag as the class to find.
Cast the result to TaskListTag and call addTaskName(). C. In the TaskListTag.doStartTag method, call super.getChildTags() and iterate through the results. Cast each result to a TaskTag and call getName(). D. Create an addTaskName method in TaskListTag. Have the TaskListTag.doStartTag method, return BodyTag.EVAL_BODY_BUFFERE In the TaskTag.doStartTag method, call super.getParent(), cast it to a TaskListTag, and call addTaskName(). E. It is impossible for a tag handler that extends BodyTagSupport to communicate with its parent and child tags.

Correct Answer: D

Question 2

What is true about Java EE authentication mechanisms?

A. 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. B. 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. C. 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. D. 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.

Correct Answer: B

Question 3

You have a use case in your web application that adds several session-scoped attributes.
At the end of the use case, one of these objects, the manager attribute, is removed and then it needs to decide which of the other session-scoped attributes to remove.
How can this goal be accomplished?

A. The object of the manager attribute should implement the HttpSessionListener and it should call the removeAttribute method on the appropriate session attributes. B. The object of the manager attribute should implement the HttpSessionBindingListener and it should call the removeAttribute method on the appropriate session attributes. C. The object of the manager attribute should implement the HttpSessionListener and it should call the deleteAttribute method on the appropriate session attributes. D. The object of the manager attribute should implement the HttpSessionBindingListener and it should call the deleteAttribute method on the appropriate session attributes.

Correct Answer: B

Question 4

One of the use cases in your web application uses many session-scoped attributes. At the end of the use case, you want to clear out this set of attributes from the session object.
Assume that this static variable holds this set of attribute names:
2 01. private static final Set<String> USE_CASE_ATTRS;
2 02. static {
2 03. USE_CASE_ATTRS.add("customerOID");
2 04. USE_CASE_ATTRS.add("custMgrBean");
2 05. USE_CASE_ATTRS.add("orderOID");
2 06. USE_CASE_ATTRS.add("orderMgrBean");
207. }
Which code snippet deletes these attributes from the session object?

A. for ( String attr : USE_CASE_ATTRS ) {
session.remove(attr);
} B. for ( String attr : USE_CASE_ATTRS ) {
session.deleteAttribute(attr);
} C. for ( String attr : USE_CASE_ATTRS ) {
session.removeAttribute(attr);
} D. session.deleteAllAttributes(USE_CASE_ATTRS); E. session.removeAll(USE_CASE_ATTRS);

Correct Answer: C

Question 5

Click the Exhibit button.
The Appliance class is a Singleton that loads a set of properties into a Map from an external data source. Assume:
An instance of the Appliance class exists in the application-scoped attribute, appl
The appliance object includes the name property that maps to the value Cobia
The request-scoped attribute, prop, has the value name.
Which two EL code snippets will display the string Cobia? (Choose two.)

A. ${appl.getProperties().get(prop)} B. ${appl.properties[prop]} C. ${appl.getProperties().get('name')} D. ${appl.properties[name]} E. ${appl.properties.prop} F. ${appl.properties.name}

Correct Answer: B,F

Question 6

You are building a web application with a scheduling component. On the JSP, you need to show the current date, the date of the previous week, and the date of the next week. To help you present this information, you have created the following EL functions in the 'd' namespace:
name: curDate; signature: java.util.Date currentDate()
name: addWeek; signature: java.util.Date addWeek(java.util.Date, int)
name: dateString; signature: java.util.String getDateString(java.util.Date)
Which EL code snippet will generate the string for the previous week?

A. ${d:dateString[addWeek[curDate[], -1]]} B. ${d:dateString[d:addWeek[d:curDate[], -1]]} C. ${d:dateString(addWeek(curDate(), -1))} D. ${d:dateString(d:addWeek(d:curDate(), -1))}

Correct Answer: D

Question 7

Given a portion of a valid Java EE web application's directory structure:
MyApp
|
|-- File1.html
|
|-- Directory1
| |-- File2.html |
|-- META-INF
|-- File3.html
You want to know whether File1.html, File2.html, and/or File3.html will be directly accessible by your web client's browsers.
Which statement is true?

A. Only File1.html and File2.html are directly accessible. B. All three files are directly accessible. C. Only File2.html is directly accessible. D. Only File1.html is directly accessible. E. Only File2.html and File3.html are directly accessible. F. Only File1.html and File3.html are directly accessible. G. Only File3.html is directly accessible.

Correct Answer: A

Question 8

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. <%@ page import='java.util.List,java.util.ArrayList' %> B. <%! import java.util.List;
import java.util.ArrayList; %> C. <%@ page import='java.util.List'
import='java.util.ArrayList' %> D. <%! import java.util.*; %> E. <%@ import types='java.util.List,java.util.ArrayList' %> F. <%@ import types='java.util.List'
types='java.util.ArrayList' %>

Correct Answer: A,C

Question 9

Given the security constraint in a DD:
1 01. <security-constraint>
1 02. <web-resource-collection>
1 03. <web-resource-name>Foo</web-resource-name>
1 04. <url-pattern>/Bar/Baz/*</url-pattern>
1 05. <http-method>POST</http-method>
1 06. </web-resource-collection>
1 07. <auth-constraint>
1 08. <role-name>DEVELOPER</role-name>
1 09. </auth-constraint>
1 10. </security-constraint>
And given that "MANAGER" is a valid role-name, which four are true for this security constraint? (Choose four.)

A. DEVELOPER can do a GET on resources in the /Bar/Baz directory. B. MANAGER can do a GET on resources in the /Bar/Baz directory. C. DEVELOPER can do a TRACE on any resource in the /Bar/Baz directory. D. MANAGER can do a TRACE on any resource in the /Bar/Baz directory. E. DEVELOPER can do only a POST on resources in the /Bar/Baz directory. F. MANAGER can do a POST on any resource in the /Bar/Baz directory.

Correct Answer: A,B,C,D

Question 10

In a JSP-centric shopping cart application, you need to move a client's home address of the Customer object into the shipping address of the Order object. The address data is stored in a value object class called Address with properties for: street address, city, province, country, and postal code. Which two JSP code snippets can be used to accomplish this goal? (Choose two.)

A. <c:set target='${order}' property='shipAddress'>
< jsp:getProperty name='client' property='homeAddress' />
< /c:set> B. <c:set var='order' property='shipAddress'>
< jsp:getProperty name='client' property='homeAddress' />
< /c:store> C. <c:set var='order' property='shipAddress'
value='${client.homeAddress}' /> D. <c:set target='${order}' property='shipAddress'
value='${client.homeAddress}' /> E. <c:setProperty name='${order}' property='shipAddress'>
< jsp:getProperty name='client' property='homeAddress' />
< /c:setProperty> F. <jsp:setProperty name='${order}' property='shipAddress'
value='${client.homeAddress}' />

Correct Answer: A,D

Question 11

Which retrieves all cookies sent in a given HttpServletRequest request?

A. request.getAttributes() B. request.getSession().getAttributes() C. request.getSession().getCookies() D. request.getCookies()

Correct Answer: D

Question 12

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>
< news:lookup>
< tr>
< td><news:item info="${headline}" /></td>
< /tr>
< /news:lookup>
< /table> B. <table>
< tr>
< news:lookup>
< td><news:item info="${headline}" /></td>
< /news:lookup>
< /tr>
< /table> C. <table>
< tr>
< td>
< news:lookup />
< news:item info="${headline}" />
< /td>
< /tr>
< /table> D. <news:lookup />
< table>
< tr>
< td><news:item info="${headline}" /></td>
< /tr>
< /table>

Correct Answer: A

SUN Sun Certified Web Component Developer for J2EE 5 - 310-083 Exam Practice Test