A desktop computer in an office environment suddenly loses network connectivity. A technician decides to follow the bottom-up OSI troubleshooting approach to diagnose the problem. In which order should the technician perform these steps to systematically isolate the issue?
- 1Inspect the link light on the computer's network interface card.
- 2Execute the `ipconfig` command to check the host's IP address assignment.
- 3Ping the local default gateway address.
- 4Ping a remote IP address on the internet.
Cevap
The correct order begins with inspecting the physical link light, followed by checking the local IP configuration with `ipconfig`, then pinging the default gateway, and finally pinging a remote IP address.
In a bottom-up troubleshooting methodology, technicians start at the Physical layer (Layer 1) by inspecting the NIC link light. Next, they verify host Layer 3 configurations using `ipconfig`. They then test local router reachability by pinging the default gateway, and lastly, test end-to-end WAN routing by pinging a remote public IP address.
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Bottom-up OSI network troubleshooting methodology