Troubleshooting A NIC

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I am currentl doing my ccna part one and just starting to learn and need guidenence...........I am just looking at the trooubleshooting procedures and something i have read say that when you go to the device manager if you find a red X or a yellow !. check the network protocols ......... it does not say what to do , would i be right in saying that you would at this piont if it has either
proceed to eliminate driver problems before going to the next step ?

 

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What you have described would indicate an issue with either the NIC driver or a conflict with another device, such as an internal modem or sound card etc.

Network protocols would not cause this behaviour IMHO.

 

I agree with Bluerinse.

What text are you using that say this?

 

I agree with Bluerinse as well!