---
title: "network"
aliases: 
tags: 
- cosc203
---

# Overview
Physical Media
- TP cable
	- two wired twisted together surrounded by a shield
	- signal and ground reference
	- short range (100meters)
	- phone, DSL, ethernet lan
- Coaxial
	- inner conductor
	- insulator
	- outer conductor (shield)
	- insulator
	- plastic cover
	- long distance high speed: cable tv ethernet lan
- fibre optic
	- light within glass
	- high speed low error
# Application Layer
[Application Layer](notes/Application Layer)
# Transport Layer
[Transport Layer](notes/Transport Layer)
# Network Layer
[Network Layer](notes/Network Layer)
# Data Link Layer
[Data Link Layer](notes/Data Link Layer)
# Physical Layer
[Physical Layer](notes/Physical Layer)
# Wireless Layer
[Wireless Layer](notes/Wireless Layer)
# Security Layer
[Security Layer](notes/Security Layer)
# Other Layer
[Other Layer](notes/Other Layer)