Connection Devices Flashcards
Because the telephone was originally designed for voice transmission, telephone lines were designed to carry ________ which are continuous electronic waves
analog signals
Computers send and receive ________ which represent the presence or absence of an electronic pulse
digital signals
The word ________ is short for modulator-demodulator.
modem
____________ is the name of the process of converting from digital to analog
Modulation
______________ is the process of converting from analog to digital
Demodulation
The speed with which modems transmit data varies. This speed called ___________ is typically measured in millions of bits ________________.
- transfer rate
- (megabits) per second (Mbps)
A _____________ modem uses standard phone lines to create a high-speed connection directly to your phone company’s office.
DSL (digital subscriber line)
A __________ uses the same coaxial cable as your television.
cable modem
A __________ is also known as a _____________. Almost all computers today have these built in.
- wireless modem
- WWAN (wireless wide area network) modem
Copper lines known as _______ lines, that could be combined to form higher capacity options known as ____ or _______ lines. These lines have largely been replaces by faster ___________ lines.
- T1
- T3
- DS3
- optical carrier (OC)
For years individuals relied on ____________ using existing telephones and telephone modems to connect to the Internet.
dial-up services
__________________ including Verizon, AT&T, Sprint, and T-Mobile, support voice and data transmission to wireless devices using cellular networks.
Cellular Service providers
__________ could only transmit analog signals used for voice communications
First generation (1G)
____________ used radio signals for cellular calls and introduced texting
Second generation (2G)
______________ improved data speeds and introduced widespread use of the Internet on cell phones
Third generation (3G)
____________ uses ____________ connections for increased internet speeds, making streaming videos and music popular on cell phones
- Fourth generation (4G)
- Long Term Evolution (LTE)
____________ is the newest and fastest network, with speeds rivaling home internet connections. New technology.
Fifth generation (5G)
_____________ is provided by telephone companies using existing telephone lines to provide high-speed connections.
Digital subscriber line (DSL) service
_____________ is one of the most widely used types of DSL. DSL is much faster than dial up.
ADSL (asymmetric digital subscriber line)
_________ is provided by cable television companies using their existing television cables. connections usually faster than DSL.
Cable service
___________ is showing up in some area, but it is a new technology and not widely available.
Fiber-optic service (FiOS)
____________ use satellites to provide wireless connections. Although slower than DSL and cable modem, satellite connections are available almost anywhere using a satellite-receiving disk.
Satellite connection services
