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# User Models to Understand IP Networking
## Network Models
|| OSI | TCP/IP | Actual |
|7|Application|Application|Application|
|6|Presentation|Application|Application|
|5|Session|Application|Application|
|4|Transport|Transport|Transport|
|3|Network|Network|Network|
|2|Data Link|Network Access|Data Link|
|1|Physical|Network Access|Physical|
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