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Read the Cisco CCNA1 certification book. It goes deep on the theory and levels of the OSI model like switching. From there it’s a lot easier to grok.
by rexarex 6y ago
Read the Cisco CCNA1 certification book. It goes deep on the theory and levels of the OSI model like switching. From there it’s a lot easier to grok.
- mrkstu 6y agoYep, start there and then throw GNS3 on a fairly hefty VM and start labbing scenarios that relate to environments that are of interest to you.