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 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.
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?()
A.<auth-constraint/> B.<auth-constraint><role-name>*</role-name></auth-constraint> C.<auth-constraint><role-name>ANY</role-name></auth-constraint> D.<auth-constraint><role-name>MARKETING</role-name></auth-constraint>