This document discusses various topics related to computer networking including wired and wireless communication methods, networking devices, network topologies, protocols, identifying computers and users, security concepts, internet applications, wireless communication technologies, and network security concepts. It covers networking fundamentals such as Ethernet cables, switches, hubs, and protocols like TCP/IP as well as more advanced topics such as 3G, 4G, firewalls, hackers, and cyber law.

1. Networking
Communication
Media
Wired
Co-Axial
Ethernet Cable
Optical Fiber
Wireless
Blue Tooth
Infrared
Microwave
Radio Link
Satellite Link
Devices
Switch
Hub
Repeater
Gateway
Types
PAN
LAN
MAN
WAN
Network
Topologies
Star
Bus
Tree
Protocols
HTTP
TCP/IP
PPP
Identifying
Computers and
Users
Domain Name
Media Access
Control(MAC)
IP Address
Domain Name
Resolution
Security
Denial of Service
Intrusion
Problems
Snooping
Internet
Applications
SMS
Voice Mail
Electronic Mail
Chat
Video
Conferencing
Wireless/Mobile
Communication
GSM
CDMA
WLL
3G
4G
Network security
Concepts
Cyber Law
Firewall
Cookies
Hackers
Crackers