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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>

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1.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” />

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2.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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3.单项选择题 Assume that a news tag library contains the tags lookup and item：
Lookup Retrieves the latest news headlines and executes the tag body once for each headline. Exposed a NESTED page-scoped attribute called headline of type com.example. Headline containing details for that headline.
Item Outputs the HTML for a single news headline. Accepts an attribute info of type com.example. Headline containing details for the headline to be rendered. Which snippet of JSP code returns the latest news deadlines in an HTLM table， one per row？（）

A.A
B.B
C.C
D.D

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4.单项选择题 Which JSTL tag structure supports this scenario？（）

A.A
B.B
C.C
D.D

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5.单项选择题
Assuming the tag library in the exhibit is imported with the prefix forum， which custom tag invocation produces a translation error in a JSP page？（）

A.A
B.B
C.C
D.D
E.E

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6.单项选择题Which the security mechanism uses the concept of a realm？（）

A. authorization
B. data integrity
C. confidentiality
D. authentication

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7.单项选择题Which the basic authentication type is optional for a J2EE 1.4 compliant web container？（）

A. HTTP Basic Authentication
B. Form Based Authentication
C. HTTP Digest Authentication
D. HTTPS Client Authentication

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8.单项选择题When adding a element to a web application deployment descriptor， the inclusion of which sub-element requires the definition of an error page（）？

A. <realm-name>
B. <auth-metod>
C. <auth-constraint>
D. <form-login-config>
E. <user-data-constaint>

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9.单项选择题Which security mechanism can be directed through the element in a web deployment descriptor（）？

A. authorization
B. data integrity
C. confidentiality
D. authentication

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10.多项选择题 A Company.com developer has created a web application that includes a servlet for each use case in the application. These servlets have become rather difficult to maintain because the request processing methods have become very large. There is also common processing code in many servlets because these use cases are very similar.
Which two design patterns can be used together to refactor and simplify this web application？（）

A. Proxy
B. View Helper
C. Front Controller
D. Session Façade
E. Business Delegate
F. Model-View-Controller

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