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?
A. Route Bridge Encapsulation (RBE)
B. PPPoA
C. Integrated Routing and Bridging (IRB)
D. AAA
E. PPPoE client
Answer: E
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