Webbshed!

7 Layer Model					5 Layer Model
#	Layer Name	Protocol	Protocol Data Unit	Addressing	#	Layer Name	Protocol	Protocol Data Unit	Addressing
7	Application	HTTP,SMTP,etc...	Messages	n/a	5	Application	HTTP,SMTP,etc...	Messages	n/a
6	Presentation	ASCII, MPEG	Data	n/a
5	Session	NetBois	Data	n/a
4	Transport	TCP/UDP	Segment	Port #'s	4	Transport	TCP/UDP	Segment	Port #'s
3	Network	IP	Packet/datagram	IP Address	3	Network	IP	Packet/datagram	IP Address
2	Data Link	Ethernet, Wi-Fi	Frames	MAC Address	2	Data Link	Ethernet, Wi-Fi	Frames	MAC Address
1	Physical	n/a	Bits	n/a	1	Physical	n/a	Bits	n/a

Application: Receives information directly from users and displays incoming data to the user
Presentation: Represents the preparation or translation of application format to network format, or from 
               network formatting to application format
Session: Where two computers or other networked devices need to speak with one another
Transport: Deals with the coordination of the data transfer between end systems and hosts; how much data 
           to send, at what rate, where it goes, etc
Network: Responsible for packet forwarding, including routing through different routers
Data Link: Provides node-to-node data transfer and also handles error correction from the physical layer
Physical: Represents the electrical and physical representation of the system: cable type, radio frequency, 
          layout of pins, voltages