100% SUN 310-083 Guaranteed Success With Testing Engine

SUN Sun Certified Web Component Developer for J2EE 5 Sample Questions:

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) 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().
B) In the TaskListTag.doStartTag method, call getChildTags() on the PageContext and iterate through the results. Cast each result to a TaskTag and call getName().
C) 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().
D) It is impossible for a tag handler that extends BodyTagSupport to communicate with its parent and child tags.
E) In the TaskListTag.doStartTag method, call super.getChildTags() and iterate through the results. Cast each result to a TaskTag and call getName().

2. Click the Exhibit button.
The h:highlight tag renders its body, highlighting an arbitrary number of words, each of which is passed as an attribute (word1, word2, ...). For example, a JSP page can invoke the h:highlight tag as follows:
1 1. <h:highlight color="yellow" word1="high" word2="low">
1 2. high medium low
1 3. </h:highlight>
Given that HighlightTag extends SimpleTagSupport, which three steps are necessary to implement the tag handler for the highlight tag? (Choose three).

A) add a getter and setter for the word1 and word2 attributes
B) add a doStartTag method
C) add a getter and setter for the color attribute
D) add a doTag method
E) implement the DynamicAttributes interface
F) create and implement a TagExtraInfo class

3. Which interface must a class implement so that instances of the class are notified after any object is added to a session?

A) javax.servlet.http.HttpSessionBindingListener
B) javax.servlet.http.HttpSessionListener
C) javax.servlet.http.HttpSessionValueListener
D) javax.servlet.http.HttpSessionAttributeListener

4. Which two statements are true about the security-related tags in a valid Java EE deployment descriptor? (Choose two.)

A) A given <web-resource-collection> tag can contain from zero to many <url-pattern> tags.
B) A <security-constraint> tag can have many <web-resource-collection> tags.
C) A given <auth-constraint> tag can apply to only one <web-resource-collection> tag.
D) Every <security-constraint> tag must have at least one <http-method> tag.
E) It is possible to construct a valid <security-constraint> tag such that, for a given resource, no user roles can access that resource.

5. Given:
1 . <% int[] nums = {42,420,4200};
2 . request.setAttribute("foo", nums); %>
3 . ${5 + 3 lt 6}
4 . ${requestScope['foo'][0] ne 10 div 0}
5 . ${10 div 0}
What is the result?

A) false true 0
B) false true Infinity
C) An exception is thrown.
D) true true Infinity
E) true true
F) Compilation or translation fails.
G) false true

Solutions: