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SUN 310-083 Exam Syllabus Topics:

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

1. Which two statements are true about using the isUserInRole method to implement security in a Java EE application? (Choose two.)

A) It can be used independently of the getRemoteUser method.
B) It can be invoked only from the doGet or doPost methods.
C) Using the isUserInRole method overrides any declarative authentication related to the method in which it is invoked.
D) Can return "true" even when its argument is NOT defined as a valid role name in the deployment descriptor.
E) Using the isUserInRole method overrides any declarative authorization related to the method in which it is invoked.

2. Which two classes or interfaces provide a getSession method? (Choose two.)

A) javax.servlet.http.HttpSessionContext
B) javax.servlet.http.HttpServletRequest
C) javax.servlet.http.HttpSessionBindingEvent
D) javax.servlet.http.HttpServletResponse
E) javax.servlet.http.HttpSessionAttributeEvent

3. A JSP page needs to set the property of a given JavaBean to a value that is calculated with the JSP page. Which three jsp:setProperty attributes must be used to perform this initialization? (Choose three.)

A) value
B) param
C) attribute
D) name
E) val
F) id
G) property

4. You are creating a library of custom tags that mimic the HTML form tags. When the user submits a form that fails validation, the JSP form is forwarded back to the user. The
< t:textField> tag must support the ability to re-populate the form field with the request parameters from the user's last request. For example, if the user entered "Samantha" in the text field called firstName, then the form is re-populated like this:
< input type='text' name='firstName' value='Samantha' />
Which tag handler method will accomplish this goal?

A) public int doStartTag() throws JspException {
ServletRequet request = pageContext.getRequest();
String value = request.getParameter(this.name);
if ( value == null ) value = "";
JspWriter out = pageContext.getOut();
try {
out.write(String.format(INPUT, this.name, value));
} (Exception e) { throw new JspException(e); }
return SKIP_BODY;
}
private static String INPUT
= "<input type='text' name='%s' value='%s' />";
B) public void doTag() throws JspException {
JspContext ctx = getJspContext();
String value = ctx.getParameter(this.name);
if ( value == null ) value = "";
JspWriter out = pageContext.getOut();
try {
out.write(String.format(INPUT, this.name, value));
} (Exception e) { throw new JspException(e); }
}
private static String INPUT
= "<input type='text' name='%s' value='%s' />";
C) public void doTag() throws JspException {
ServletRequet request = pageContext.getRequest();
String value = request.getParameter(this.name);
if ( value == null ) value = "";
JspWriter out = pageContext.getOut();
try {
out.write(String.format(INPUT, this.name, value));
} (Exception e) { throw new JspException(e); }
}
private static String INPUT
= "<input type='text' name='%s' value='%s' />";
D) public int doStartTag() throws JspException {
JspContext ctx = getJspContext();
String value = ctx.getParameter(this.name);
if ( value == null ) value = "";
JspWriter out = pageContext.getOut();
try {
out.write(String.format(INPUT, this.name, value));
} (Exception e) { throw new JspException(e); }
return SKIP_BODY;
}
private static String INPUT
= "<input type='text' name='%s' value='%s' />";

5. 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 . <x:beta />
The sort.jsp page is requested.
Which two are true? (Choose two.)

A) 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.
B) The sort.jsp page translates successfully and invokes the tag defined by beta.tag.
C) 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.
D) Tag files can only be accessed using a tagdir attribute.
E) Tag files can only be placed in /WEB-INF/tags, and NOT in any subdirectories of /WEB-
INF/tags.
F) The sort.jsp page produces a translation error because a taglib directive must always have a uri attribute.

Solutions: