jsp在线考试系统-htm文件_MySQL-mysql教程-PHP中文网

jsp在线考试系统-htm文件_MySQL

php中文网

发布： 2016-06-01 14:08:23

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　　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)

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JSP Professional, Chapter 12
Quiz

by Dan Malks

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The HREF="/developer/Books/jsp/index.html">JSP Professional: Chapter 12, JSP
Archictecture Test your knowledge on the differences between servlets
and JSP, Factor Forward-Factor Back, page-centric verses the dispatcher
approach, and more.

Choose the statement
that best describes the relationship between JavaServer
Pages^TM (JSP^TM)
and servlets:

TYPE="RADIO" VALUE="A"> A.	Servlets are built on JSP semantics and all servlets are compiled to JSP pages for runtime usage
TYPE="RADIO" VALUE="B"> B.	JSP and servlets are unrelated technologies
TYPE="RADIO" VALUE="C"> C.	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 Servlets are being superceded by JSP, which is preferred.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.
TYPE="RADIO" VALUE="D"> D.	JSPs are built on servlet semantics and all JSPs are compiled to servlets for runtime usage

What is a benefit of
using JavaBeans^TM to separate business logic
from presentation markup within the JSP environment?

TYPE="RADIO" VALUE="A"> A.	It allows the JSP to access middleware
TYPE="RADIO" VALUE="B"> B.	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
TYPE="RADIO" VALUE="C"> C.	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
TYPE="RADIO" VALUE="D"> D.	It provides the developer with full access to the Java^TM 2 Platform Enterprise Edition (J2EE^TM), which is unavailable from outside the JavaBean environment

Why use the
RequestDispatcher to forward a request to another resource,
instead of doing a sendRedirect?

TYPE="RADIO" VALUE="A"> A.	Redirects are no longer supported in the current servlet API
TYPE="RADIO" VALUE="B"> B.	Redirects are not a cross-platform portable mechanism
TYPE="RADIO" VALUE="C"> C.	The `RequestDispatcher` does not use the reflection API
TYPE="RADIO" VALUE="D"> D.	The `RequestDispatcher` does not require a round trip to the client, and thus is more efficient and allows the server to maintain request state

What alternatives exist
to embedding Java code directly within the HTML markup of your JSP page?

TYPE="RADIO" VALUE="A"> A.	Moving the code into your session manager
TYPE="RADIO" VALUE="B"> B.	Moving the code into sciptlets
TYPE="RADIO" VALUE="C"> C.	Moving the code into JavaBeans and servlets
TYPE="RADIO" VALUE="D"> D.	Moving the code into a transaction manager

What type of scriptlet
code is better-suited to being factored forward into a servlet?

TYPE="RADIO" VALUE="A"> A.	Code that deals with logic that is common across requests
TYPE="RADIO" VALUE="B"> B.	Code that deals with logic that is vendor specific
TYPE="RADIO" VALUE="C"> C.	Code that deals with logic that relates to database access
TYPE="RADIO" VALUE="D"> D.	Code that deals with logic that relates to client scope

Choose the statement that
best describes how to connect JSP pages and EJBs

TYPE="RADIO" VALUE="A"> A.	Lookup the EJBs from within a JSP, but use the EJBs from within a basic JavaBean
TYPE="RADIO" VALUE="B"> B.	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
TYPE="RADIO" VALUE="C"> C.	Lookup and use the EJBs from within a JSP page, but only as remote references
TYPE="RADIO" VALUE="D"> D.	Lookup the EJBs from within a servlet, delegating usage to specific JSP pages

Are custom tags
available in JSP 1.0? If not, how else might you implement iteration from
within a JSP?

TYPE="RADIO" VALUE="A"> A.	Yes, but the only tags available relate to database access
TYPE="RADIO" VALUE="B"> B.	No. To iterate over a collection of values, one must use scriptlet code
TYPE="RADIO" VALUE="C"> C.	No, but there is a standard tag that may be used
TYPE="RADIO" VALUE="D"> D.	Yes, but custom tags will not help developers create tags for use in iterating over a collection

What is the initial
contact point for handling a web request in a Page-Centric architecture?

TYPE="RADIO" VALUE= "A"> A. A JSP
page

TYPE="RADIO" VALUE= "B"> B. A
JavaBean

TYPE="RADIO" VALUE= "C"> C. A
servlet

TYPE="RADIO" VALUE= "D"> D. A session
manager

What is the difference
between doing an include or a forward with a
RequestDispatcher?

TYPE="RADIO" VALUE="A"> A.	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.
TYPE="RADIO" VALUE="B"> B.	The two methods provide the same functionality, but with different levels of persistence
TYPE="RADIO" VALUE="C"> C.	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
TYPE="RADIO" VALUE="D"> D.	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

What line of code below
might be combined in the same JSP page with a validation guard (for
example, ), in order to create
an alternate flow of control for scenarios in which exceptions arise. The
validationGaurd method might throw an exception, which should cause
the flow of control to continue in another user-defined page (assume JSP
1.0)

TYPE="RADIO" VALUE="A"> A.	`<error>page="errorPage.jsp" guard="true" /></error>`
TYPE="RADIO" VALUE="B"> B.	`language="java" buffer="8k" %>`
TYPE="RADIO" VALUE="C"> C.	`<usebean>id="bean" class="examples.Bean" scope="request" /></usebean>`
TYPE="RADIO" VALUE="D"> D.	`language="java" errorPage="errorPage.jsp" buffer="8k" <br>%>`

Duke

jsp在线考试系统-htm文件_MySQL

JSP Professional, Chapter 12 Quiz

by Dan Malks

JSP Professional, Chapter 12
Quiz