Cisco Networking Technologies Introduction Part 3 

...and
DSL technologies. It then teaches the fundamentals of
Cisco IOS software and switching. It maps to
Cisco Exam 640-821.
Learn To:
Identify features of routing.
Identify information contained in the routing table.
Identify goals of routing protocols.
Identify characteristics of circuit switching and packet switching.
Identify bandwidths available for serial line connections.
more...