350-029 Question #296: Real Exam Question with Answer & Explanation

Typical ADSL broadband Internet access requires a username and password to be entered on end-user PC connected to the ADSL modem in order for the end user to gain access to the Internet.if a Cisco ADSL router is used instead of an ADSL modem,what functionality is required on the Cisco ADSL router so the end-user connected to the Cisco ADSL router can access the Internet without entering a username and password?