多项选择题

A.The function method must have the signature： public S……

Given an EL function declared with：11. <function>
12.<name>spin</name>
13.<function-class>com.example.Spinner</function-class>
14.<function-signature>
15.java.lang.String spinIt（）
16.</function-signature>
17.</function>
Which two are true？（）

A.The function method must have the signature： public String spin（）.
B.The method must be mapped to the logical name "spin" in the web.xml file.
C.The function method must have the signature： public String spinIt（）.
D.The function method must have the signature public static String spin（）.
E.The function method must have the signature： public static String spinIt（）.
F.The function class must be named Spinner， and must be in the package com.example.

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单项选择题Given a web application in which the cookie userName is expected to contain the name of the user. Which EL expression evaluates to that user name？（）

A.${userName}
B.${cookie.userName}
C.${cookie.user.name}
D.${cookies.userName[0]}

多项选择题Given： http： com.example myServlet.jsp？num=one&num=two&num=three. Which&ensp;two produce the output one， two and three ？（）

A.${param.num[0]，[1] and [2]}
B.${paramValues[0]，[1] and [2]}
C.${param.num[0]}， ${param.num[1]} and ${param.num[2]}
D.${paramValues.num[0]}， ${paramValues.num[1]} and ${paramValues.num[2]}
E.${paramValues["num"][0]}， ${paramValues["num"][1]} and ${paramValues["num"][2]}

多项选择题Given： 11.<% java.util.Map map = new java.util.HashMap（）； 12.request.setAttribute（ map ， map）； 13.map.put（ a ， true ）； 14.map.put（ b ， false ）； 15.map.put（ c ， 42 ）； %> Which three EL expressions are valid and evaluate to true？（）

A.${not map.c}
B.${map.d or map.a}
C.${map.a and map.d}
D.${map.false or map.true}
E.${map.a and map.b or map.a}

多项选择题Given： 11.<% 12.request.setAttribute（ vals ， new String[]{ 1 ， 2 ， 3 ， 4 }）； 13.request.setAttribute（ index ， 2 ）； 14.%> 15.<%-- insert code here --%> Which three EL expressions， inserted at line 15，are valid and evaluate to 3 ？（）

A.${vals.2}
B.${vals["2"]}
C.${vals.index}
D.${vals[index]}
E.${vals}[index]
F.${vals[vals[index-1]]}

多项选择题Whichtwoaretrueaboutauthentication？（）

A.Form-based logins should NOT be used with HTTPS.
B.When using Basic Authentication the target server is NOT authenticated.
C.J2EE compliant web containers are NOT required to support the HTTPS protocol.
D.Web containers are required to support unauthenticated access to unprotected web resources.