© 2005 Cisco Systems, Inc. All rights reserved. CIT v5.23-1 Module Summary Use specific characteristics and commands to isolate failures of media, devices,

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© 2005 Cisco Systems, Inc. All rights reserved. CIT v Module Summary Use specific characteristics and commands to isolate failures of media, devices, and software at the physical and data link layers. The ultimate goal of correcting a network problem is to return the network to its baseline state.