单项选择题

A JSP page needs to perform some operations before servicing the first request. Where can this be done？（）

A. within a method called jspInit
B. within the page directive of the JSP page
C. within a scriptlet at the top of the JSP page
D. within the XML element

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多项选择题Which two successfully translate and result in a value of true？（）

A. ${true or false}
B. ${requestScope[foo][0] > 500}
C. ${requestScope[“foo”][1] = 420}
D. ${（requestScope[“foo”][0] lt 50） && （3 gt 2）

单项选择题Which EL expression， inserted at line 3 is valid and evaluated to “beanValue”？（）

A. ${bean}
B. ${value}
C. ${beanValue}
D. ${com.example.bean}
E. ${requestScope[“com.example.bean”]}
F. ${request.get（“com.example.bean”）.toString（）}

单项选择题WhichmethodmustbeusedtoencodeaURLpassedasanargumenttoHttpServletResponse.sendRedirectwhenusingURLrewritingforsessiontracking？（）

A. ServletResponse.encodeURL
B. HttpServletResponse.encodeURL
C. ServletResponse.encodeRedirectURL
D. HttpServletResponse.encodeRedirectURL

单项选择题What is the result when a request is sent to MyServlet？（）

A. An IllegalStateException is thrown at runtime.
B. An InvalidSessionException is thrown at runtime.
C. The string “value=null” appears in the response stream.
D. The string “value=myAttributeValue” appears in the response stream.

单项选择题Which statement， inserted at line 16， unbinds an attribute from a session？（）

A. session.unbind（“key”）；
B. session.remove（“key”）；
C. session.removeAttribute（“key”）；
D. session.unbindAttribute（“key”）；
E. session.deleteAttribute（“key”）；