TCP-IP

1. TCP/IP layers

TCP/IP	OSI
Application	Application
	presentation
	Session
Transport	Transport
Internet	Network
Nwtwork access	Data link
	Physical

2. Subnet classes

Class A: 0.0.0.0 — 127.255.255.255

Class B: 128.0.0.0 — 191.255.255.255

Class C: 192.0.0.0 — 223.255.255.255

Class D: 224.0.0.0 — 239.255.255.255

Class E: 240.0.0.0 — 255.255.255.255

3. Private IP

Class A: 10.0.0.1 — 10.255.255.254

Class B: 172.16.0.1 — 172.31.255.254

Class C: 192.168.0.1 — 192.168.255.254

4. Auto Private IP

Class B: 169.254.0.0 — 169.254.255.255