Shared Flashcard Set

Details

ch 9
cs 115
28
Computer Science
Undergraduate 1
11/17/2010

Additional Computer Science Flashcards

 


 

Cards

Term
communications
Definition
describe process which 2/moa comp/devices transfer data, instructions, and info
Term
communications channel
Definition
transmissin media which data, instructions/ or info travel
Term
SMS/text msg
Definition
short msg service
Term
cybercafé
Definition
internet cafe, location dat procide comp w/internet access to customers
Term
groupware
Definition
software dat help groups work together and share info over network
Term
network
Definition
collection of comp and devices together
Term
local area network (LAN)
Definition
connect comp and devices in limited geographical area
Term
Wireless LAN (WLAN)
Definition
wireless LAN
Term
wide are network (WAN)
Definition
cover large geographic area using sommunications channel at combo many media types
Term
client/server network
Definition
1/moa comp act as server, and odda comp on network request services from server
Term
server
Definition
host comp, control acces to hardware, software, odda resources on network and providestroage area for programs, data, and info
Term
ethernet
Definition
network dat specidy nocentral comp/device on network shud sontrol wen data can b transmitted;
Term
toekn ring
Definition
specity dat comp and devices on network share/pass special signal (toekn) in unidirectional manner and in preset order
Term
802.11
Definition
series of network standards dat specify how two sireless devices comunicate ova air w/each odda
Term
bluetooth
Definition
use short-tange radio waves to transmit data
Term
UWB/ ultra-wideband
Definition
network dat specify how 2 UWB devices use short-tange radio waves to communicate w/each odda
Term
IrDA
Definition
transmit data wirelessly toeach odda via infrared light waves
Term
RFID
Definition
radio requency id; how network use radio signals to communicate w/tag in/attached to object/animal/person
Term
WiMAX/802.16
Definition
worldwide interoperability for microwave access; network dat specify hwo wireless devices communicate ova air in wide area
Term
Wireless Application Protocol (WAP)
Definition
specify how mobile devices can display internet content
Term
dedicated line
Definition
always-on connection dat est tween 2 communications devices
Term
FTTP/ Fiber to the Premises
Definition
use fiber-optic cable to provide internet access to user's permanent location
Term
network card
Definition
network interface card, communications device dat enable comp.device dat no get buiolt-in networking capability to access network
Term
latency
Definition
time take signal to travel from 1 locatin to anodda on network
Term
transmission media
Definition
materials capable of carryong 1/moa signals
Term
noise
Definition
electrical disturbance dat can degrade communication
Term
coaxial cable
Definition
single wire surrounded by 3 layers
Term
communications satellite
Definition
space station dat get microwave signals from eath-based station, and broadcast signals back
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