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"？（）

多项选择题 Whichtwoaretrueaboutauthentication？（）

多项选择题 Given the two security constraints in a deployment descriptor： 101.<security-constraint> 102.<!--a correct url-pattern and http-method goes here-->  103.<auth-constraint><role-name>SALES</role-name></auth- . <auth-constraint> 104.<role-name>SALES</role-name> 105.</auth-constraint> 106.</security-constraint> 107.<security-constraint> 108.<!--a correct url-pattern and http-method goes here-->  109.<!-- Insert an auth-constraint here --> 110.</security-constraint> If the two security constraints have the same url-pattern and http-method which two inserted independentlyat line 109，will allow users with role names of either SALES or MARKETING to access this resource？（）