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Cheat sheet: OSI layers mapped to real protocols & PDUs

Sharing the table I keep next to me during labs — each OSI layer mapped to protocols you actually touch and the PDU name: | Layer | Name | Examples | PDU | |------|------|----------|-----| | 7 | Application | HTTP, DNS,…
osifundamentalsprotocolsstudy-notes
ben31833 · posted Jun 6, 2026
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