What you need to know about...

	Computer/Communications Networks and the Internet

Motivation + Definitions
Network Structure
Switching Methodologies
	- Circuit Switching
	- Store-and-Forward
		- Message Switching
		- Packet Switching
		- Cell Switching (ATM)
Types of Traffic
Layered Network Architectures
	- Layers: abstractions...
The ISO/OSI Reference Model
	- motivation
	- number of layers
	- functionality of each layer
The Internet Layered Model
	- number of layers
	- functionality of each layer
Connection Oriented & Connectionless Services
	- virtual circuits
	- datagrams
The Client-Server Model
Basic functionality of some Internet Protocols
	- IP
	- TCP
		- reliability through retransmissions
		- ACKs
		- sequence numbers
		- checksum
	- UDP
	- SMTP
	- HTTP
Historical Notes
	- The ARPAnet
	- The Aloha Protocol
	- LANs
	- Ethernet