There is a question that I found for the CCNA Intro exam that asks.
Which port can be used for a WAN T1 connection A. AUI B. BRI C. Console D. Serial 0
On this document it says that BRI is correct but I think that Serial 0 is correct and anyone confirm this?
You are correct, it is Serial. BRIs have two B channels and one D channel, equalling 128 kbps for the Bs (if bonded together) and 16kbps for the D (if I recall correctly). You would use a Serial interface for a T1. You'll find small discrepancies in the study materials, including errors every once in awhile on the actual Cisco stuff!
Amazing, Thanks
And to be completely technically correct, a T1 is a PRI and would be connected via a physical serial interface on the router...but it is a PRI.
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