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]}

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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}

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？（）

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？（）