多项选择题
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 You are building a Front Controller using a JSP page and you need to determine if the user’s session hasNOT been created yet and perform some special processing for this case. Which scriptlet code snippet willperform this test？（）
单项选择题 You need to create a JSP that generates some JavaScript code to populate an array of strings used on theclient-side. Which JSP code snippet will create this array？（）
单项选择题 You have a new IT manager that has mandated that all JSPs must be refactored to include no scritpletcode. The IT manager has asked you to enforce this. Which deployment descriptor element will satisfy thisconstraint？（）