When troubleshooting a network issue, a technician decides to employ a bottom-to-top approach using the OSI model. Which layer would they start their troubleshooting from?
When using the bottom-to-top approach in the OSI model for troubleshooting, the technician starts at the Physical layer. This layer deals with the physical components of the network such as cables and hardware, which are often the first places to check for connectivity issues or physical damage before exploring higher-level configuration or software issues in other layers.
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What is the OSI model?
What does the Physical layer include?
Why is the bottom-to-top approach effective in troubleshooting?