Communications And Network

Communications And Network
Wireless Transmission
Media
Cellular radio
Microwaves
A communications satellite
Communications channel
ฺBandwidth
Latency
Transmission
Broadband
Home Networks
connect to the internet
share a single high-speed
internet connection
Access file and programs on
other computer
Share peripherals
Play multi-player games
Connect game consoles to
the internet
Subscribe to and use VolP
Communications Devices
DSL modem
Cable modem
Wireless moden
uses the cell phone network
to connect to the internet
Network card
A router connects multiple
computer or other routers
Communications over the
telephone network
Dial-up lines
Dedicated line
ISDN line
DSL
FTTP
T-carrier
ATM
Communications Software
Help users establish a
connection to another computer
or network
Manage the transmission of
data, instructions, and
infornation
Provide an interface for users
to communicate with one
another
Communication
Sending device
Communication channel
Receiving device
Network Communications
Stadndards
Ethernet
a network standard that specifies no
computer controls when data can be
transmitted
Token ring
the standard specifies that computers and
devices on the network share or pass a
special signal
TCP/IP
A network standard that defines how
messages are routed from one end of a
network to another
Wi-Fi
Bluetooth
UWB
Specifies how two UWB devices use
short-range radio signals to
communicate
IrDA
Transmits data wirelessly via
infrared light waves
RFID
Uses radio signals to communicate with a
tag placed in or attached to an object,
animal, orperson
WiMAX
WAP
Uses of computer
communications
Blogs
Chatroom
E-mail
Fax
Internet
Web
Wikis
Video conferrencing
Instant messaging
ETC.
Network
Advantages of network
Sharing hardware
Facilitating communications
Sharing data and information
Sharing Software
Transferring funds
A local area network (Lan)
A wireless Lan
A wide area network
P2P
An internet network on which
user access each other's hard
disk
Objectives Overview
Discuss the purpose of the
components required for
successful communication
Describe the uses of
computer communication
differentiate among a star
network , bus network , and ring
network
describe the various network
communication standard
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