Wide Area Networks

Wide Area Networks - Wide Area Networks

Which WAN encapsulations can be configured on an asynchronous serial connection?
PPP
ATM
HDLC
SDLC
Frame Relay

A 1 and 2

B 2 and 4

C 3, 4 and 5

D All of the above

ANS:A - 1 and 2

Please do not freak out because ATM is an answer to this question. ATM is not covered in depth on the CCNA exam. PPP is mostly used for dial-up (async) services, but ATM could be used as well, though it typically is not used anymore since PPP is so efficient.

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