Which two options are valid WAN connectivity methods? (Choose two.)
A.
PPP
B.
WAP
C.
DSL
D.
L2TPv3
E.
Ethernet
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DSL is not a communication protocol by itself, a layer1 standard. It uses ATM or PPP at layer2
Establishing a Point-to-Point WAN Connection with PPP.
DSL (Digital Subscriber Link) is the signalling method used to access the WAN (Wide-Area Network)
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