OSI Model
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OSI Model applied on TCP/IP
5 App 4 Transport (segment TCP,UDP: port) 2 Network (packets IP) 1 Link (frames) 0 Physical (bits)
More info
| OSI # | OSI Layer Name | TCP/IP # | TCP/IP Layer Name | Encapsulation Units | TCP/IP Protocols |
|---|---|---|---|---|---|
| 7 | Application | 4 | Application | data | FTP, HTTP, POP3, IMAP, telnet, SMTP, DNS, TFTP |
| 6 | Presentation | data | |||
| 5 | Session | data | |||
| 4 | Transport | 3 | Transport | segments | TCP, UDP |
| 3 | Network | 2 | Internet | packets | IP |
| 2 | Data Link | 1 | Network Access | frames | |
| 1 | Physical | bits |