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Communications and Networks by Mind Map: Communications and Networks
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Communications and Networks

Uses of Computer Communications

send and receive wireless messages

Text messages

Picture messages

Video messages

wireless internet access points

cybercafe

global positioning system(GPS)

mobile devices

handheld devices

new vehicles

Collaboration software to share via online

Online meeting

Web conferences

Document Management system

Networks

connected via communications

Advantages of a network

Facilitating communications

Sharing hardware

Sharing data and information

Sharing software

Tranferring funds

local area network (LAN)

wireless LAN (WLAN)

metropolitan area network (MAN)

wide area network (WAN)

network architecture

P2P (access to hard dissk and exchange file over the internet)

network topologe, Star network, Bus network, New node

Network Communication Standards

Ethernet

token ring

TCP / IP

Wifi

Bluetooth

UWS (Ultra - wideband)

TrDA

RFID

Communications Software

help users connect another computer

manage tranmission

provide an interface for users

Communication over the telephone network

ADSL

public swiched telephone network (PSTN)

Communications Devices

sends and receives data from a digital line

DSL modem

Cable modem

wireless modem

network card

router connect (multiple computer)

hub (switch connects in a network together)

Home Networks

computer capabililties

Connect to the internet at the same time

Share a single high-speed internet connection

Access file and programs on other computers

Share peripherals

play multiplayer games

connect games console to the internet

subscribe to and use VolP

type of wired

ethernet

powerlines cable

phoneline

Communications channel

bandwidth

latency

transmission media

broadband

Physical transmission Media

Twisted-pair cables

Coaxial cables

Fiber-optic cables

Wireless transmission Media

Cellular radio

Microwaves

Communications satellite