问题:多选题Given that a scoped attribute cart exists only in a user’s session, which two, taken independently, ensure the scoped attribute cart no longer exists?()A ${cart = null} B<c:remove var=cart />C<c:remove var=${cart} />D<c:remove var=cart scope=session />E<c:remove scope=session>cart</c:remove>F<c:remove var=${cart} scope=session />G<c:remove scope=session>${cart}</c:remove>
查看答案
问题:多选题Which the two JSTL URL-related tags perform URL rewriting?()AurlBlinkCparamDimportEredirect
问题:单选题Which HTTP method has the characteristic that multiple indential requests may produce side effect beyond those of a single request()?APUTBGETCINFODPOSTEHEADFTRACE
问题:单选题Which the HTTP method represents a request for information about the supported methods on an HTTP server?()AGETBINFOCHEADDTRACEEOPTIONS
问题:单选题Which is the valid identifier?()AfalseBdefaultC_objectDa-class
问题:单选题Which thefollowingstatements about static inner classes is true?()AAn anonymous class can be declared as static.BA static inner class cannot be a static member of the outer class.CA static inner class does not require an instance of the enclosing class.DInstance member of a static inner class can be referenced using the class name of the staticinner class.
问题:单选题What is the result?()AThe output is X = 6 y = 0BThe output is x = 7 y = 0CThe output is x = 6 y = -1DThe output is x = 7 y = -1ECompilation will fail.
问题:单选题Which interface must a class implement to be informed of a session creation event?()Ajavax.servlet.http.HttpSessionListenerBjavax.servlet.http.HttpSessionBindingListenerCjavax.servlet.http.HttpSessionCreationListenerDjavax.servlet.http.HttpSessionActivationListener
问题:多选题For which three events can web application event listeners be registered? ()Awhen a session is createdBafter a servlet is destroyedCwhen a session has timed outDwhen a cookie has been createdEwhen a servlet has forwarded a requestFwhen a session attribute value is changed
问题:多选题Which two are characteristics of the Intercepting Filter pattern?()Ait provides centralized request handling for incoming requests.BIt forces resource authentication to be distributed across web components.CIt reduces coupling between presentation-tier clients and underlying business services.DIt can be added and removed unobtrusively, without requiring changes to existing code.EIt allows preprocessing and postprocessing on the incoming requests and outgoing responses.
问题:单选题When using Form Based Authentication, which pair of fields must be used in the login form?()Aj_user and j_idBj_id and j_passwordCj_users and j_passwordDj_user and j_passwordEj_login and j_passwordFj_username and j_password
问题:单选题} What is the result?()ACompilation succeeds and 1 is printed.BCompilation succeeds and 2 is printed.CAn error at line 8 causes compilation to fail.DAn error at line 14 causes compilation to fail.
问题:单选题Company.com has decided to use the FUBAR Application Server to host their web application. Unfortunately, the FUBAR Application Server uses the server machine’s file system for its JNDI namespace. Every JNDI lookup performed in the web application is translated into a file 1/0 operation, which results in very poor performance. Which J2EE pattern can help with this performance issue?()ATransfer ObjectBService LocatorCIntercepting FilterDModel-View-Controller
问题:单选题Which option prevents the exception thrown by my:errorProne from invoking the error page mechanism and outputs the message "File not found" in the response?()AABBCCDDEE
问题:单选题Which path is required to be present within a WAR file?()A/classesB/index.htmlC/MANIFEST-INFD/WEB-INF/web.xmlE/WEB-INF/classesF/WEB-INF/index.htmlG/META-INF/index.xml
问题:单选题In form-based authentication, what must be included in the HTML returned from the URL specified by the element?()Aa base-64 encoded user name and passwordBa form that POSTs to the j_security_check URLCan applet that requests the user name and password from the userDa hidden field that supplies the login-constraint used by the application
问题:多选题Assume session is an HttpSession, and is not referenced anywhere else in ServletA. Which two changes, taken together, ensure that value is equal to “Hello” on line 23? ()AABBCCDDEE
问题:单选题What is the result( )?AThe program prints “0”.BThe program prints “4”.CThe program prints “8”.DThe program prints “12”.EThe code does not compile.
问题:单选题Which the JSTL code snippet can be used to import content from another web resource?()A<c:import url=*foo.jsp”/> B<c:import page=*foo.jsp”/> C<c:include url=*foo.jsp”/> D<c:include page=*foo.jsp”/> EImporting cannot be done in JSTL. A standard action must be used instead.