单项选择题 YourCustomerhas21users，eachrequiringbothPCandIPPhoneconnectivity.Whichisthecorrectconfigurationforthiscustomer？（）

单项选择题 Whichdesignphaseservicecomponentconsistsofdevelopingadetailed，site－specificplanforimplementinganewtechnologysystemorsolution？Selectexactly1answer（s）fromthefollowing：（）。

单项选择题 CiscoSeriesroutersissuitableforsmallbusinessesandforconnectinqsmallofficestoenterprise networks.（）