© 2005 Cisco Systems, Inc. All rights reserved. CIT v5.25-1 Module Summary When isolating problems at the transport and application layers, the technological.

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© 2005 Cisco Systems, Inc. All rights reserved. CIT v Module Summary When isolating problems at the transport and application layers, the technological focus shifts to involved issues such as access lists and DNS. After you have isolated the problem, use the tools and resources provided by Cisco and your end systems to configure the properties of your network.