OSI Models

1. Media layers

2. Host Layers

3. 7 Layer of OSI Models

3.1. Application

3.1.1. End User Layer

3.1.1.1. Protocols: HTTP, FTP, IRC, SSH, DNS

3.2. Presentation

3.2.1. Syntax Layer

3.2.1.1. Protocols: SSL, SSH, IMAP, FTP, MPEG, JPEG

3.3. Session

3.3.1. Synch & send to port

3.3.1.1. Protocols: API´s, Winsock

3.4. Transport

3.4.1. End-to-end connections

3.4.1.1. Protocols: TCP, UDP

3.5. Network

3.5.1. Packets

3.5.1.1. Protocols: IP, ICMP, IPSec, IGMP

3.6. Data Link

3.6.1. Frames

3.6.1.1. Networks; Hubs; Protocols: Ethernet, PPP, Switch, Bridge

3.7. Physical

3.7.1. Physical structure

3.7.1.1. Connections: Coax, Fiber, Wireless, Hubs, Repeters

4. Data

4.1. Data

4.1.1. ...

4.2. Data

4.2.1. ...

4.3. Data

4.3.1. ...

4.4. Segments

4.4.1. ...

4.5. Packets

4.5.1. ...

4.6. Frames

4.6.1. ...

4.7. Bits

4.7.1. ...

5. What is the OSI Models is?

5.1. OSI model is a conceptual model that characterizes and standardizes the communication functions of a telecommunication or computing system without regard to its underlying internal structure and technology. Its goal is the interoperability of diverse communication systems with standard communication protocols. The model partitions a communication system into abstraction layers.