네트워크를 이해하기 위한 모델 세가지

1, 2 는 전통적인 two important network architectures

1. OSI reference model
Application Layer : ex) HTTP (HyperText Transfer Protocol)
Presentation Layer
Session Layer : allows users on different machines to establish sessions between them
Transport Layer : end-to-end layer
Network Layer : Packets
Data Link Layer : Data Frames (typically a few hundred or a few thousand bytes)
Physical Layer : Raw Data (0101010...)

2. TCP/IPreference model
Application : TELNET, FTP, SMTP, DNS
Transport : TCP, UDP
Network : IP
Physical + Data Link : LAN, ARPANET

3. Tanenbaum's Hybrid model
Application Layer
Transport Layer
Network Layer
Data Link Layer
Physical Layer

레퍼런스 : Computer Networks 4th Ed - Andrew S. Tanenbaum > 1.5 Example Networks