1. Communications
1.1. Device
1.1.1. DSL modem
1.1.2. Cable modem
1.1.3. Wireless modem
1.1.4. Network card
1.2. Channel
1.2.1. Bandwidth
1.2.2. Latency
1.2.3. Transmission Media
1.2.3.1. Physical Transmission Media
1.2.3.1.1. Twisted-pair cable
1.2.3.1.2. Fiber-optic cable
1.2.3.1.3. Coaxial cable
1.2.3.2. Wireless Transmission Media
1.2.3.2.1. Infrared
1.2.3.2.2. Broadcast radio
1.2.3.2.3. Cellular radio
1.2.3.2.4. Microwaves
1.2.3.2.5. Communications satellite
1.2.4. Broadband
1.3. Uses of Communications
1.3.1. Blogs
1.3.2. Chat rooms
1.3.3. E-mail
1.3.4. Fax
1.3.5. FTP
1.3.6. Instant messaging
1.3.7. Internet
1.3.8. Newsgroups
1.3.9. RRS
1.3.10. Video conferencing
1.3.11. VoIP
1.3.12. Web
1.3.13. Web 2.0
1.3.14. Web folders
1.3.15. Wikis
2. Networks
2.1. A local area network (LAN)
2.2. A wireless LAN (WLAN)
2.3. A wide area network (WAN)
2.4. A network topology
2.5. Network Communications Standards
2.5.1. Ethernet
2.5.2. Token ring
2.5.3. TCP/IP
2.5.4. Wi-Fi
2.5.5. Bluetooth
2.5.6. UWB
2.5.7. IrDA
2.5.8. RFID
2.5.9. WiMAX
2.5.10. WAP
2.6. Advantages
2.6.1. Facilitating communications
2.6.2. Sharing hardware
2.6.3. Sharing data and information
2.6.4. Sharing software
2.6.5. Transferring funds