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Communications and Network by Mind Map: Communications
and Network
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Communications and Network

Uses of Computer Communications

Text messaging

Picture messaging

Video messaging

Wireless Internet access points

allow people to connect wirelessly to the Internet from home, work, school, and in many public locations

global positioning system (GPS)

is a navigation system that consists of one or more earth-based receivers that accept and analyze signals sent by satellites in order to determine the GPS receiver’s geographic location


Sending device

Communications channel

Receiving device


Facilitating communications

Sharing hardware

Sharing data and information

Sharing software

Transferring funds

local area network (LAN)

is a network that connects computers and devices in a limited geographical area

wireless LAN (WLAN)

is a LAN that uses no physical wires

metropolitan area network (MAN)

connects LANs in a metropolitan area

wide area network (WAN)

is a network that covers a large geographical area

Network Communications Standards


Token ring



identifies any network based on the 802.11 standard that facilitates wireless communication Sometimes referred to as wireless Ethernet


defines how two Bluetooth devices use short-range radio waves to transmit data

UWB (ultra-wideband)

specifies how two UWB devices use short-range radio waves to communicate at high speeds

Communications Software

Help users establish a connection to another computer or network

Manage the transmission of data, instructions, and information

Provide an interface for users to communicate with one another

Communications Over the Telephone Network

Dial-up lines

Dedicated line

ISDN line



Communications Devices

DSL modem

Cable modem

Wireless modem

Network card

Router connects


Home Networks

Connect to the Internet at the same time

Share a single high-speed Internet connection

Access files and programs on other computers

Share peripherals

Play multiplayer games

Connect game consoles to the Internet

Subscribe to and use VoIP

Communications Channel



Transmission media