Skip to content

Latest commit

 

History

History
31 lines (23 loc) · 1004 Bytes

osi_model.md

File metadata and controls

31 lines (23 loc) · 1004 Bytes

7 Layer OSI Model

Acronym : "All People Seem To Need Data Processing"

7. Application

  • Simple Mail Transfer Protocol(SMTP) File Transfer Protocol(FTP), Telnet, HyperText Transfer Protocol(HTTP), Secure Socket Layer(SSL),
  • "Language" that the applications and servers use to communicate with one another.

6. Presentation

  • Format of data and character set conversion like ASCII, Encryption

5. Session

  • Establishing and terminating connections.

4. Transport

  • TCP, UDP, Ports
  • Data integrity checking, source and destination ports and specs for breaking application data into packets.

3. Network

  • IPv4, IPv6, Routers
  • Defines how to move packets from a source host to a destination host.

2. Data Link

  • MAC addresses, switches
  • How physical addresses are added to the data with the use of frames.

1. Physical

  • Ethernet, modem
  • How to send raw data across a physical medium.

Other Resources