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多項(xiàng)選擇題

Which two B-RAS service offerings do not require user authentication?（）

A.Routed 1483
B.Bridged 1483
C.PPP over ATM
D.PPP over Ethernet

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單項(xiàng)選擇題

Which protocol is used between the RAS and the authentication server in a narrowband network environment？（）

A.RADIUS
B.PPPPAP
C.MSCHAP
D.PPPCHAP

多項(xiàng)選擇題

Which two forms of DSL connectivity provide the same bandwidth in both directions？（）

A.ADSL
B.HDSL
C.SDSL
D.RADSL