From 123-CBT Computer Based Training
Cisco Internetwork Troubleshooting Part 2 

...The courses are designed to prepare learners for the
CCNP CIT exam
642-831. This course will cover commands and guidelines for problem isolation and resolution at the network, transport, and application layers of the
OSI model.
Learn To:
Identify symptoms of problems occurring at the network layer.
Identify functions of network layer commands.
Identify functions of commands for
more...
Cisco Internetwork Troubleshooting Part 1 

...The courses are designed to prepare learners for the
CCNP CIT exam
642-831. This course will cover baseline configuration and documentation of networks and end-systems, support resources for troubleshooting, and troubleshooting approaches. It covers commands and guidelines required for problem isolation and resolution at the physical and data link layers of the
OSI model.
Learn To:
more...