The tag handler for n：recurse extends SimpleTagSupport.Assuming an n：recurse tag can either contain an empty body or another n：recurse tag， which strategy allows the tag handler for n：recurse to output the nesting depth of the deepest n：recurse tag？（）
A. It is impossible to determine the deepest nesting depth because it is impossible for tag handlers that extend SimpleTagSupport to communicate with their parent and child tags
B. Create a private non-static attribute in the tag handler class called count of type int initialized to oIncrement count in the doTag method. If the tag has a body， invoke the fragment for that body. Otherwise， output the value of count
C. Start a counter at 1. Call getChildTags（）. If it returns null， output the value of the counter. Otherwise， increment counter and continue from where getChildTags（） is called. Skip processing of the body.
D. If the tag has a body， invoke the fragment for that body. Otherwise， start a counter at 1. Call getParent（）. If it returns null， output the value of the counter. Otherwise， increment the counter and continue from where getParent（） is called.
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Which code snippet， inserted at line 8， causes the value Company to be output？（）
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C. JspWriter w = new JspWriter（pageContext.getOut（））； w.print（“Company”）；
D. JspWriter w = new JspWriter （pageContext.getResponse（））； w.print（“Company”）；
Which statement， at line 16， retrieves an InputStream for the file /WEBINF/ nyresrc.bin（）？
A. new InputStream（“/WEB-INF/nyressrc.bin”）；
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D. new InputStream（“/WEB-INF/nyresrc.bin”）；
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Which three can be placed at line 23 to retrieve an existing HttpSession object？（）
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B. HttpSession session = request.getSession（id）；
C. HttpSession session = request.getSession（true）；
D. HttpSession session = request.getSession（false）；
E. HttpSession session = request.getSession（“jsessionid”）
A. The developer must ensure that every URL is properly encoded using the appropriate URL rewriting APIs
B. The developer must provide an alternate mechanism for managing sessions and abandon theHttpSession mechanism entirely
C. The developer can ignore this issue. Web containers are required to support automatic URL rewriting when cookies are not supported
D. The developer must ass the string ？id=
What code， inserted at line 21， is called prior to a session being migrated to a different JVM assuming the web application containing MyExample is deployed in a container which supports distributed applications？（）
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C. public void sessionDidActivate（HttpSessionEvent ev）{...}
D. public void sessionWillPassivate（HttpSessionEvent ev）{...}
A. A filter must implement the destroy method
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C. A servlet may have multiple filters associated with it
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E. A filter that is part of a filter chain passes control to the next filter in the chain by invoking the filterChain forward method
F. For each
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？ （）
A.A
B.B
C.C
D.D
E.E
Given the HttpServlet code：
getServletContext（）.setAttribute（“foo”， “value”）；
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A. The init method on a filter is called the first time a servlet mapped to that filter is invoked
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Which code snippet， inserted at line 8， causes the value Company to be output？（）
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Which path， relative to a web application’s root， identifies the web application’s deployment descriptor？（）
Which the three interfaces need to be declared in the web application deployment descriptor？ （）
Which two are true？（）
Which three are guaranteed to be valid for the element of a web application deployment descriptor？（）
Which two are true（）
A custom JSP tag must be able to support an arbitrary number of attributes whose names are unknown when the tag class is designed. Which two are true？ （）
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Which the three are true about servlet filters？（）