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Sams Teach Yourself Network Troubleshooting in 24 Hours, Second Edition by Jonathan Feldman

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The Fat Finger Factor

Let’s look at person-initiated change first, starting with my favorite person to blame: me. Many times, when you might make a change to a router or server in order to offer a new service or to fix a problem, you introduce new and wonderful problems, simply because to err is human. If the error that you introduce does not take effect immediately, the change that you initiate seems to work, and will be the last thing you think of if a problem surfaces later. (This is a really, really good reason to keep a log of changes; rather than having to remember or ask others what network attribute has changed, you can simply look it up.)

For example, one time, I was fixing the startup file for a NetWare server to automatically make ...

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