Intro to Business Test 1 12345678
Modem
(modulator-demodulator) is a network hardware device that modulates one or more carrier wave signals to encode digital information for transmission.
Basic elements of a communication system:
-sending and receiving devices -connection devices -data transmission specifications -communication channel
WiMax (extends Wi-Fi)
New standard that uses microwave to extend WiFi range
Infrared
Use infrared light wants to communication over short distances
Cellular
Use multiple antennae to communicate
Satellite
Uses satellites as microwave relay stations
Communication systems
electronic systems that transmit data from one location to another
Computer Communications
process of sharing data, programs, and information between two or more computers
Increased connectivity potentially means increased ___
productivity
provides a fast, efficient alternative to traditional mail by sending and receiving electronic documents
Videoconferencing
provides a very-low-cost alternative to long-distance telephone calls using electronic voice and video delivery
Texting
provides very efficient direct text communication between individuals using short electronic messages
Transfer rate
speed in which modems transfer data; usually measured in megabits per second
Demodulation
the process of converting from analog to digital
Modulation
the process of converting from digital to analog
fiber-optic cable
transmits data as pulses of light through tiny tubes of glass
physical connections
use a solid medium to connect sending and receiving devices
Wi-Fi (Wireless Fidelity)
uses high-frequency radio signals to transmit data
Microwave
uses high-frequency radio waves
Leased Lines
Connection Services (Corporation): Faster and not affordable for individuals
Digital Subscriber Line (DSL) Cable Satellite Cellular Fiber Optic
Connection services for individuals
GPS
Determine geographic location of the devices
Electronic Commerce
buying and selling goods electronically
We live in a ____ society
connected
twisted-pair cable
consists of pairs of copper wire that are twisted together. Both standard telephone lines and Ethernet cables use twisted pair.
Connection devices
devices needed to convert digital signal to analog
Types of Signal
Analog and Digital
Connectivity
a concept related to using computer networks to link people and resources
coaxial cable
a high-frequency transmission cable, replaces the multiple wires of telephone lines with a single solid-copper core
Bluetooth
a short range radio communication standard that transmits data over short distances of up to approximately 33 feet
communication channels
an essential element of every communication system (physical and wireless)
