TCP/IP Layers



PC Applications HTTP
[HyperText Transfer Protocol]
Telnet
[Virtual Terminal]
FTP
[File Transfer Protocol]
E-mail
[Simple Mail Transfer Protocol]
Network Management
[Simple Network Management Protocol]
DNS
[Domain Name System]
SMB [Server Message Block]
NetBIOS
TCP
[Transmission Control Protocol]
UDP
[User Datagram Protocol]
IP [Internet Protocol]         ARP, ICMP, IGMP
Ethernet Token Ring FDDI WAN Protocols
Ethernet Twisted Pair Fiber Optics Wireless


Subnetting Table

128 192 224 240 248 252 254 255
2 4 8 16 32 64 128 256
128 64 32 16 8 4 2 1