單項(xiàng)選擇題Which is a benefit of precompiling a JSP page?()

A.It avoids initialization on the first request.
B.It provides the ability to debug runtime errors in the application.
C.It provides better performance on the first request for the JSP page.
D.It avoids execution of the _jspService method on the first request.


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1.單項(xiàng)選擇題

The JSP developer wants a comment to be visible in the final output to the browser.
Which comment styleneeds to be used in a JSP page?()


A.<!-- this is a comment -->
B.<% // this is a comment %>
C.<%-- this is a comment --%>
D.<% /** this is a comment **/ %>

2.多項(xiàng)選擇題Which two are valid and equivalent?()

A.<%! int i; %>
B.<%= int i; %>
C.<jsp:expr>int i;</jsp:expr>
D.<jsp:scriptlet>int i;</jsp:scriptlet>
E.<jsp:declaration>int i;</jsp:declaration>

4.多項(xiàng)選擇題Given that a scoped attribute cart exists only in a user’s session, which two,taken independently,ensurethe 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>

5.多項(xiàng)選擇題

Given in a single JSP page:
<%@ taglib prefix=’java’ uri=’myTags’ %>
<%@ taglib prefix=’JAVA’ uri=’moreTags’ %> 
Which two are true?()

A.The prefix ’java’ is reserved.
B.The URI ’myTags’ must be properly mapped to a TLD file by the web container.
C.A translation error occurs because the prefix is considered identical by the web container.
D.For the tag usage , the tag1 must be unique in the union of tag names in ’myTags’ and’moreTags’.

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