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After having new carpets installed in an office, one of the employees indicates that her computer no longer connects to the company's network or the Internet. What would should a network technician check first when troubleshooting this issue?
Verify the patch cable is connected
Mismatched MTU
Verify the switch in the IDF room has power
Verify that the company's DNS server is online
When troubleshooting a connectivity issue, especially one where physical activity (in this case, the carpet in the office was replaced) has occurred, always start by troubleshooting the lowest level of the OSI first. Layer 1, the Physical, includes any cabling, so one should check to see if the patch cable connecting the computer to the wall jack was unplugged from both the computer and the wall jack.
If, after checking the cable was plugged in, the user was still unable to connect, check the computer's network card for link lights, which might indicate the cable was damaged during the carpet replacement (if there were no lights flashing). Always have a known good patch cable available to replace the unknown status patch cable.
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