Troubleshooting Common Problems on Small Networks

As with any type of technology, sometimes things just don't work out the way you want them to. This truth brings us to the troubleshooting portion of this chapter. Learning about the different tools available to help identify and solve problems with networking is paramount to successfully sharing resources locally or across the globe.

The first step to learning about troubleshooting falls into the theoretical arena with the OSI model. See Table 14-10 for a list of the OSI model layers and their names. The OSI model helps us break networks into different layers in terms of how they correspond to the different applications and protocols we use to transmit data. Each protocol works in different ways, and the OSI model helps us understand how they function and what they do.

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