多项选择题Which the three interfaces need to be declared in the web application deployment descriptor? ()

A. HttpSessionListener
B. HttpSessionBindingListener
C. HttpSessionTimedOutListener
D. HttpSessionAttributeListener
E. HttpSessionActivationListener
F. HttpSessionPassivatedListener


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1.单项选择题

Given that session is a valid HttpSession object:  
Int max = session.getAttribute(“MyReallyLongName”);  
Which is true?()  

A. The value returned needs to be cast to an int.
B. The getAttribute methos takes two arguments.
C. Primitive CANNOT be stored in the HttpSession.
D. The HttpSession attribute name must NOT exceed eight characters.

2.多项选择题Upon a user’s first visit to the website, which two operations are always performed when the getSession method is called with no arguments in a servlet?()

A. All URLs returned by the server are rewritten.
B. An HttpSession object is created if necessary.
C. The user name and password of the user are checked.
D. The session ID is stored in the HTTP response as a cookie.

3.单项选择题Which interface must a class implement to be informed of a session creation event?()

A. javax.servlet.http.HttpSessionListener
B. javax.servlet.http.HttpSessionBindingListener
C. javax.servlet.http.HttpSessionCreationListener
D. javax.servlet.http.HttpSessionActivationListener

4.多项选择题Which the two are concerning the objects available to developers creating tag files?()

A. The session object must be declared explicity.
B. The request and response objects are available implicity.
C. The output stream is available through the implicit outStream object.
D. The servlet context is available through the implicit servletContext object.
E. The JspContext for the tag file is available through the implicit jspContext object.

5.单项选择题Assume a tag handler extends TagSupport. Which is used within the tag handler to get an attribute “foo” that is in the application scope?()

A. pageContext.getAttribute(“foo”);
B. getPageContext().getAttribute(“foo”);
C. pageContext.getApplicationScope(“foo”);
D. pageContext.getAttribute(“foo”,pageContext.APPLICATION_SCOPE).getAttribute(“foo”);
E. getPageContext().getScope(pageContext.APPLICATION_SCOPE).getAttribute(“foo”);

6.多项选择题Which the two about WAR files are true?()

A. WAR files must be located in the web application library directory.
B. WAR files must contain the web application deployment descriptor.
C. WAR files must be created by using archive tools to designed specifically for that purpose. 
D. The web container must serve the content of any META-INF directory located in a WAR file.
E. The web container must allow access to resources in JARs in the web application library directory

8.多项选择题Given that a scoped attribute cart exist 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>

9.多项选择题Assume the scoped attribute priority does NOT yet exist. Which two create and set new request-scoped attribute priority to the value “medium”?() 

A. ${priority = ‘medium’ } 
B. ${requestScope[ ‘priority’ ] = ‘medium’ } 
C. <c:set var=priority” value=”medium” /> 
D. <c:set var=”priority” scope=”request”>medium</C:set> 
E. <c:set var=”priority” value=”medium” scope=”request” /> 
F. <c:set property=”priority” scope=”request”>medium</c:set> 
G. <c:set property=”priority” value=”medium” scope=”request” />

10.多项选择题Which the two JSTL URL-related tags perform URL rewriting?()

A. url
B. link
C. param
D. import
E. redirect

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