一个在线考试系统，测试你的jsp知识，代码不是特别多，所以不加注释了(http://jspbbs.yeah.net)
　　
　　 index.jsp
　　
　　 <TABLE BORDER="0" CELLPADDING="0" CELLSPACING="0">
　　 <TR>
　　 <TD VALIGN="TOP"><FONT FACE="Verdana, Arial, Helvetica, sans-serif">
　　 <DIV ALIGN="RIGHT">
　　 <FONT SIZE="-1"><A HREF="/developer/Quizzes/index.html">Quizzes
　　 Index</A></FONT></DIV>
　　 <H2 ALIGN="RIGHT"><FONT COLOR="#FFFFFFF">JSP Professional, Chapter 12
　　 Quiz</FONT></H2>
　　 <H4 ALIGN="RIGHT"><EM>by Dan Malks</EM></H4>
　　
　　 <TABLE BORDER="0" CELLPADDING="0" CELLSPACING="0">
　　 <TR><TD>
　　 <IMG SRC="penduke.gif" WIDTH="164" HEIGHT="115" ALIGN=left ALT="Duke">
　　 </TD><TD><FONT FACE="Verdana, Arial, Helvetica, sans-serif">
　　 The <I><A
　　 HREF="/developer/Books/jsp/index.html">JSP Professional: Chapter 12, JSP
　　 Archictecture</A></I> Test your knowledge on the differences between servlets
　　 and JSP, Factor Forward-Factor Back, page-centric verses the dispatcher
　　 approach, and more.
　　 </FONT></TD></TR>
　　 </TABLE>
　　
　　 <HR>
　　
　　 <!-- Form calls the answer.jsp, which invokes the QuizResponses bean -->
　　 <FORM METHOD="POST" ACTION="answer.jsp">
　　
　　 <OL>
　　 <!-- Question 1 -->
　　
　　 <LI><FONT FACE="Verdana, Arial, Helvetica, sans-serif">Choose the statement
　　 that best describes the relationship between JavaServer
　　 Pages<SUP><FONT SIZE="-2">TM</FONT></SUP> (JSP<SUP><FONT SIZE="-2">TM</FONT></SUP>)
　　 and servlets: </FONT>
　　 <BR>
　　 <TABLE BORDER="0" CELLPADDING="5" CELLSPACING="0">
　　 <TR><TD><FONT FACE="Verdana, Arial, Helvetica, sans-serif"><INPUT NAME="one"
　　 TYPE="RADIO" VALUE="A"> &nbsp;A.</FONT></TD>
　　 <TD><FONT FACE="Verdana, Arial, Helvetica, sans-serif">
　　 Servlets are built on JSP semantics and all servlets are compiled to JSP
　　 pages for runtime usage<BR></FONT></TD></TR>
　　 <TR><TD><FONT FACE="Verdana, Arial, Helvetica, sans-serif"><INPUT NAME="one"
　　 TYPE="RADIO" VALUE="B"> &nbsp;B.</FONT></TD>
　　 <TD><FONT FACE="Verdana, Arial, Helvetica, sans-serif"> JSP and servlets are
　　 unrelated technologies</FONT></TD></TR>
　　 <TR><TD><FONT FACE="Verdana, Arial, Helvetica, sans-serif"><INPUT NAME="one"
　　 TYPE="RADIO" VALUE="C"> &nbsp;C.</FONT></TD>
　　 <TD><FONT FACE="Verdana, Arial, Helvetica, sans-serif">Servlets and JSP are
　　 competing technologies for handling web requests. Servlets are being superceded
　　 by JSP, which is preferred. The two technologies are not useful in combination.
　　 </FONT></TD></TR>
　　 <TR><TD><FONT FACE="Verdana, Arial, Helvetica, sans-serif"><INPUT NAME="one"
　　 TYPE="RADIO" VALUE="D"> &nbsp;D.</FONT></TD>
　　 <TD><FONT FACE="Verdana, Arial, Helvetica, sans-serif"> JSPs are built on
　　 servlet semantics and all JSPs are compiled to servlets for runtime usage
　　 </FONT></TD></TR>
　　 </TABLE>
　　
　　 <P>
　　 <!-- Question 2 -->
　　 <LI><FONT FACE="Verdana, Arial, Helvetica, sans-serif">What is a benefit of
　　 using JavaBeans<SUP><FONT SIZE="-2">TM</FONT></SUP> to separate business logic
　　 from presentation markup within the JSP environment? </FONT>
　　 <BR>
　　 <TABLE BORDER="0" CELLPADDING="5" CELLSPACING="0">
　　 <TR><TD><FONT FACE="Verdana, Arial, Helvetica, sans-serif"><INPUT NAME="two"
　　 TYPE="RADIO" VALUE="A"> &nbsp;A.</FONT></TD>
　　 <TD>
　　 <FONT FACE="Verdana, Arial, Helvetica, sans-serif"> It allows the JSP to
　　 access middleware </FONT></TD></TR>
　　 <TR><TD><FONT FACE="Verdana, Arial, Helvetica, sans-serif"><INPUT NAME="two"
　　 TYPE="RADIO" VALUE="B"> &nbsp;B.</FONT></TD>
　　 <TD><FONT FACE="Verdana, Arial, Helvetica, sans-serif">It creates a cleaner
　　 role separation between the web-production team and the software development
　　 team, so that the web-production team can focus on presentation markup, while
　　 the software team can focus on building reusable software components for helping
　　 to generate dynamic displays </FONT></TD></TR>
　　 <TR><TD><FONT FACE="Verdana, Arial, Helvetica, sans-serif"><INPUT NAME="two"
　　 TYPE="RADIO" VALUE="C"> &nbsp;C.</FONT></TD>
　　 <TD><FONT FACE="Verdana, Arial, Helvetica, sans-serif">It provides a dynamic
　　 markup environment, such that JavaBeans are integrated seamlessly with the
　　 template presentation content, in order to create the dynamic display for the
　　 client
　　 </FONT></TD></TR>
　　 <TR><TD><FONT FACE="Verdana, Arial, Helvetica, sans-serif"><INPUT NAME="two"
　　 TYPE="RADIO" VALUE="D"> &nbsp;D.</FONT></TD>
　　 <TD><FONT FACE="Verdana, Arial, Helvetica, sans-serif">It provides the
　　 developer with full access to the Java<SUP><FONT SIZE="-2">TM</FONT></SUP> 2
　　 Platform Enterprise Edition (J2EE<SUP><FONT SIZE="-2">TM</FONT></SUP>),
　　 which is unavailable from outside the JavaBean environment </FONT></TD></TR>
　　 </TABLE>
　　 <P>
　　 <!-- Question 3 -->
　　
　　 <LI><FONT FACE="Verdana, Arial, Helvetica, sans-serif">Why use the
　　 <CODE>RequestDispatcher</CODE> to forward a request to another resource,
　　 instead of doing a <CODE>sendRedirect</CODE>? </FONT>
　　 <BR>
　　 <TABLE BORDER="0" CELLPADDING="5" CELLSPACING="0">
　　 <TR><TD><FONT FACE="Verdana, Arial, Helvetica, sans-serif"><INPUT NAME="three"
　　 TYPE="RADIO" VALUE="A"> &nbsp;A.</FONT></TD>
　　 <TD><FONT FACE="Verdana, Arial, Helvetica, sans-serif"> Redirects are no
　　 longer supported in the current servlet API</FONT></TD></TR>
　　 <TR><TD><FONT FACE="Verdana, Arial, Helvetica, sans-serif"><INPUT NAME="three"
　　 TYPE="RADIO" VALUE="B"> &nbsp;B.</FONT></TD>
　　 <TD><FONT FACE="Verdana, Arial, Helvetica, sans-serif"> Redirects are not a
　　 cross-platform portable mechanism</FONT></TD></TR>
　　 <TR><TD><FONT FACE="Verdana, Arial, Helvetica, sans-serif"><INPUT NAME="three"
　　 TYPE="RADIO" VALUE="C"> &nbsp;C.</FONT></TD>
　　 <TD><FONT FACE="Verdana, Arial, Helvetica, sans-serif"> The <CODE>RequestDispatcher</CODE>
　　 does not use the reflection API</FONT></TD></TR>
　　 <TR><TD><FONT FACE="Verdana, Arial, Helvetica, sans-serif"><INPUT NAME="three"
　　 TYPE="RADIO" VALUE="D"> &nbsp;D.</FONT></TD>
　　 <TD><FONT FACE="Verdana, Arial, Helvetica, sans-serif"> The
　　 <CODE>RequestDispatcher</CODE> does not require a round trip to the client, and
　　 thus is more efficient and allows the server to maintain request
　　 state</FONT></TD></TR>
　　 </TABLE>
　　
　　 <P>
　　 <!-- Question 4 -->
　　
　　 <LI><FONT FACE="Verdana, Arial, Helvetica, sans-serif">What alternatives exist
　　 to embedding Java code directly within the HTML markup of your JSP page?</FONT>
　　 <BR>
　　 <TABLE BORDER="0" CELLPADDING="5" CELLSPACING="0">
　　 <TR><TD><FONT FACE="Verdana, Arial, Helvetica, sans-serif"><INPUT NAME="four"
　　 TYPE="RADIO" VALUE="A"> &nbsp;A.</FONT></TD>
　　 <TD><FONT FACE="Verdana, Arial, Helvetica, sans-serif"> Moving the code into
　　 your session manager</FONT></TD></TR>
　　 <TR><TD><FONT FACE="Verdana, Arial, Helvetica, sans-serif"><INPUT NAME="four"
　　 TYPE="RADIO" VALUE="B"> &nbsp;B.</FONT></TD>
　　 <TD><FONT FACE="Verdana, Arial, Helvetica, sans-serif"> Moving the code into
　　 sciptlets</FONT></TD></TR>
　　 <TR><TD><FONT FACE="Verdana, Arial, Helvetica, sans-serif"><INPUT NAME="four"
　　 TYPE="RADIO" VALUE="C"> &nbsp;C.</FONT></TD>
　　 <TD><FONT FACE="Verdana, Arial, Helvetica, sans-serif"> Moving the code into
　　 JavaBeans and servlets</FONT></TD></TR>
　　 <TR><TD><FONT FACE="Verdana, Arial, Helvetica, sans-serif"><INPUT NAME="four"
　　 TYPE="RADIO" VALUE="D"> &nbsp;D.</FONT></TD>
　　 <TD><FONT FACE="Verdana, Arial, Helvetica, sans-serif"> Moving the code into a
　　 transaction manager</FONT></TD></TR>
　　 </TABLE>
　　 <P>
　　 <!-- Question 5 -->
　　
　　 <LI><FONT FACE="Verdana, Arial, Helvetica, sans-serif"> What type of scriptlet
　　 code is better-suited to being <I>factored forward</I> into a servlet?
　　 </FONT>
　　 <BR>
　　 <TABLE BORDER="0" CELLPADDING="5" CELLSPACING="0">
　　 <TR><TD><FONT FACE="Verdana, Arial, Helvetica, sans-serif"><INPUT NAME="five"
　　 TYPE="RADIO" VALUE="A"> &nbsp;A.</FONT></TD>
　　 <TD><FONT FACE="Verdana, Arial, Helvetica, sans-serif">Code that deals
　　 with logic that is common across requests</FONT></TD></TR>
　　 <TR><TD><FONT FACE="Verdana, Arial, Helvetica, sans-serif"><INPUT NAME="five"
　　 TYPE="RADIO" VALUE="B"> &nbsp;B.</FONT></TD>
　　 <TD><FONT FACE="Verdana, Arial, Helvetica, sans-serif">Code that deals
　　 with logic that is vendor specific</FONT></TD></TR>
　　 <TR><TD><FONT FACE="Verdana, Arial, Helvetica, sans-serif"><INPUT NAME="five"
　　 TYPE="RADIO" VALUE="C"> &nbsp;C.</FONT></TD>
　　 <TD><FONT FACE="Verdana, Arial, Helvetica, sans-serif">Code that deals
　　 with logic that relates to database access</FONT></TD></TR>
　　 <TR><TD><FONT FACE="Verdana, Arial, Helvetica, sans-serif"><INPUT NAME="five"
　　 TYPE="RADIO" VALUE="D"> &nbsp;D.</FONT></TD>
　　 <TD><FONT FACE="Verdana, Arial, Helvetica, sans-serif">Code that deals
　　 with logic that relates to client scope</FONT></TD></TR>
　　 </TABLE>
　　
　　 <P>
　　 <!-- Question 6 -->
　　
　　 <LI><FONT FACE="Verdana, Arial, Helvetica, sans-serif">Choose the statement that
　　 best describes how to connect JSP pages and EJBs</FONT>
　　 <BR>
　　 <TABLE BORDER="0" CELLPADDING="5" CELLSPACING="0">
　　 <TR><TD><FONT FACE="Verdana, Arial, Helvetica, sans-serif"><INPUT NAME="six"
　　 TYPE="RADIO" VALUE="A"> &nbsp;A.</FONT></TD>
　　 <TD><FONT FACE="Verdana, Arial, Helvetica, sans-serif">Lookup the EJBs from
　　 within a JSP, but use the EJBs from within a basic JavaBean</FONT></TD></TR>
　　 <TR><TD><FONT FACE="Verdana, Arial, Helvetica, sans-serif"><INPUT NAME="six"
　　 TYPE="RADIO" VALUE="B"> &nbsp;B.</FONT></TD>
　　 <TD><FONT FACE="Verdana, Arial, Helvetica, sans-serif">Lookup and use the EJBs
　　 from a separate business delegate. The JavaBeans that work with JSP pages are
　　 clients to these business delegates and know nothing about EJB
　　 specifics</FONT></TD></TR>
　　 <TR><TD><FONT FACE="Verdana, Arial, Helvetica, sans-serif"><INPUT NAME="six"
　　 TYPE="RADIO" VALUE="C"> &nbsp;C.</FONT></TD>
　　 <TD><FONT FACE="Verdana, Arial, Helvetica, sans-serif"> Lookup and use the
　　 EJBs from within a JSP page, but only as remote references</FONT></TD></TR>
　　 <TR><TD><FONT FACE="Verdana, Arial, Helvetica, sans-serif"><INPUT NAME="six"
　　 TYPE="RADIO" VALUE="D"> &nbsp;D.</FONT></TD>
　　 <TD><FONT FACE="Verdana, Arial, Helvetica, sans-serif">Lookup the EJBs from
　　 within a servlet, delegating usage to specific JSP pages</FONT></TD></TR>
　　 </TABLE>
　　
　　 <P>
　　 <!-- Question 7 -->
　　
　　 <LI><FONT FACE="Verdana, Arial, Helvetica, sans-serif"> Are custom tags
　　 available in JSP 1.0? If not, how else might you implement iteration from
　　 within a JSP? </FONT>
　　 <BR>
　　 <TABLE BORDER="0" CELLPADDING="5" CELLSPACING="0">
　　 <TR><TD><FONT FACE="Verdana, Arial, Helvetica, sans-serif"><INPUT NAME="seven"
　　 TYPE="RADIO" VALUE="A"> &nbsp;A.</FONT></TD>
　　 <TD><FONT FACE="Verdana, Arial, Helvetica, sans-serif"> Yes, but the only tags
　　 available relate to database access</FONT></TD></TR>
　　 <TR><TD><FONT FACE="Verdana, Arial, Helvetica, sans-serif"><INPUT NAME="seven"
　　 TYPE="RADIO" VALUE="B"> &nbsp;B.</FONT></TD>
　　 <TD><FONT FACE="Verdana, Arial, Helvetica, sans-serif"> No. To iterate over a
　　 collection of values, one must use scriptlet code</FONT></TD></TR>
　　 <TR><TD><FONT FACE="Verdana, Arial, Helvetica, sans-serif"><INPUT NAME="seven"
　　 TYPE="RADIO" VALUE="C"> &nbsp;C.</FONT></TD>
　　 <TD><FONT FACE="Verdana, Arial, Helvetica, sans-serif"> No, but there is a
　　 standard &lt;iterate&gt; tag that may be used</FONT></TD></TR>
　　 <TR><TD><FONT FACE="Verdana, Arial, Helvetica, sans-serif"><INPUT NAME="seven"
　　 TYPE="RADIO" VALUE="D"> &nbsp;D.</FONT></TD>
　　 <TD><FONT FACE="Verdana, Arial, Helvetica, sans-serif"> Yes, but custom tags
　　 will not help developers create tags for use in iterating over a
　　 collection</FONT></TD></TR>
　　 </TABLE>
　　
　　 <P>
　　 <!-- Question 8 -->
　　
　　 <LI><FONT FACE="Verdana, Arial, Helvetica, sans-serif"> What is the initial
　　 contact point for handling a web request in a <I>Page-Centric</I> architecture?
　　 </FONT>
　　 <BR>
　　 <TABLE BORDER="0" CELLPADDING="5" CELLSPACING="0">
　　 <TR><TD><FONT FACE="Verdana, Arial, Helvetica, sans-serif"><INPUT NAME="eight"
　　 TYPE="RADIO" VALUE= "A"> &nbsp;A.</FONT></TD>
　　 <TD><FONT FACE="Verdana, Arial, Helvetica, sans-serif"> A JSP
　　 page</FONT></TD></TR>
　　 <TR><TD><FONT FACE="Verdana, Arial, Helvetica, sans-serif"><INPUT NAME="eight"
　　 TYPE="RADIO" VALUE= "B"> &nbsp;B.</FONT></TD>
　　 <TD><FONT FACE="Verdana, Arial, Helvetica, sans-serif"> A
　　 JavaBean</FONT></TD></TR>
　　 <TR><TD><FONT FACE="Verdana, Arial, Helvetica, sans-serif"><INPUT NAME="eight"
　　 TYPE="RADIO" VALUE= "C"> &nbsp;C.</FONT></TD>
　　 <TD><FONT FACE="Verdana, Arial, Helvetica, sans-serif"> A
　　 servlet</FONT></TD></TR>
　　 <TR><TD><FONT FACE="Verdana, Arial, Helvetica, sans-serif"><INPUT NAME="eight"
　　 TYPE="RADIO" VALUE= "D"> &nbsp;D.</FONT></TD>
　　 <TD><FONT FACE="Verdana, Arial, Helvetica, sans-serif"> A session
　　 manager</FONT></TD></TR>
　　 </TABLE>
　　
　　 <P>
　　 <!-- Question 9 -->
　　
　　 <LI><FONT FACE="Verdana, Arial, Helvetica, sans-serif">What is the difference
　　 between doing an <I>include</I> or a <I>forward</I> with a
　　 <CODE>RequestDispatcher</CODE>?</FONT>
　　 <BR>
　　 <TABLE BORDER="0" CELLPADDING="5" CELLSPACING="0">
　　 <TR><TD><FONT FACE="Verdana, Arial, Helvetica, sans-serif"><INPUT NAME="nine"
　　 TYPE="RADIO" VALUE="A"> &nbsp;A.</FONT></TD>
　　 <TD><FONT FACE="Verdana, Arial, Helvetica, sans-serif"> The forward method
　　 transfers control to the designated resource, while the include method invokes
　　 the designated resource, substitutes its output dynamically in the display, and
　　 returns control to the calling page.</FONT></TD></TR>
　　 <TR><TD><FONT FACE="Verdana, Arial, Helvetica, sans-serif"><INPUT NAME="nine"
　　 TYPE="RADIO" VALUE="B"> &nbsp;B.</FONT></TD>
　　 <TD><FONT FACE="Verdana, Arial, Helvetica, sans-serif"> The two methods
　　 provide the same functionality, but with different levels of
　　 persistence</FONT></TD></TR>
　　 <TR><TD><FONT FACE="Verdana, Arial, Helvetica, sans-serif"><INPUT NAME="nine"
　　 TYPE="RADIO" VALUE="C"> &nbsp;C.</FONT></TD>
　　 <TD><FONT FACE="Verdana, Arial, Helvetica, sans-serif"> The forward method is
　　 deprecated as of JSP 1.1 and the include method should be used in order to
　　 substitue portions of a dynamic display at runtime</FONT></TD></TR>
　　 <TR><TD><FONT FACE="Verdana, Arial, Helvetica, sans-serif"><INPUT NAME="nine"
　　 TYPE="RADIO" VALUE="D"> &nbsp;D.</FONT></TD>
　　 <TD><FONT FACE="Verdana, Arial, Helvetica, sans-serif"> The include method
　　 transfers control to a dynamic resource, while the forward method allows for
　　 dynamic substitution of another JPS pages output, returning control to the
　　 calling resource</FONT></TD></TR>
　　 </TABLE>
　　
　　 <P>
　　 <!-- Question 10 -->
　　 <LI><FONT FACE="Verdana, Arial, Helvetica, sans-serif"> What line of code below
　　 might be combined in the same JSP page with a validation guard (for
　　 example,<code> &lt;% bean.validationGuard(); %&gt;</code> ), in order to create
　　 an alternate flow of control for scenarios in which exceptions arise. The
　　 <code>validationGaurd</code> method might throw an exception, which should cause
　　 the flow of control to continue in another user-defined page (assume JSP
　　 1.0)</FONT>
　　 <BR>
　　 <TABLE BORDER="0" CELLPADDING="5" CELLSPACING="0">
　　 <TR><TD><FONT FACE="Verdana, Arial, Helvetica, sans-serif"><INPUT NAME="ten"
　　 TYPE="RADIO" VALUE="A"> &nbsp;A.</FONT></TD>
　　 <TD><FONT FACE="Verdana, Arial, Helvetica, sans-serif"> <CODE>&lt;jsp:error
　　 page="errorPage.jsp" guard="true" /&gt;</CODE></FONT></TD></TR>
　　 <TR><TD><FONT FACE="Verdana, Arial, Helvetica, sans-serif"><INPUT NAME="ten"
　　 TYPE="RADIO" VALUE="B"> &nbsp;B.</FONT></TD>
　　 <TD><FONT FACE="Verdana, Arial, Helvetica, sans-serif"> <CODE>&lt;%@ page
　　 language="java" buffer="8k" %&gt;</CODE>
　　 </FONT></TD></TR>
　　 <TR><TD><FONT FACE="Verdana, Arial, Helvetica, sans-serif"><INPUT NAME="ten"
　　 TYPE="RADIO" VALUE="C"> &nbsp;C.</FONT></TD>
　　 <TD><FONT FACE="Verdana, Arial, Helvetica, sans-serif"> <CODE>&lt;jsp:useBean
　　 id="bean" class="examples.Bean" scope="request" /&gt;</CODE></FONT></TD></TR>
　　 <TR><TD><FONT FACE="Verdana, Arial, Helvetica, sans-serif"><INPUT NAME="ten"
　　 TYPE="RADIO" VALUE="D"> &nbsp;D.</FONT></TD>
　　 <TD><FONT FACE="Verdana, Arial, Helvetica, sans-serif"><CODE> &lt;%@ page
　　 language="java" errorPage="errorPage.jsp" buffer="8k"
　　 %&gt;</CODE></FONT></TD></TR>
　　 </TABLE>
　　
　　 </OL>
　　
　　 <P>
　　 <DIV ALIGN="CENTER">
　　 <INPUT TYPE="SUBMIT" VALUE="Submit">
　　 <INPUT TYPE="RESET">
　　 </DIV>
　　 </FORM>
　　
　　 </FONT>
　　 </TD>
　　 </TR>
　　 </TABLE>
　　
　　 <P>