In analog communications, sounds are transmitted as waves.

Because computers are digital devices, there is no way to connect them to an analog telephone network to transmit data.

A modem does its work through two processes: modulation and demodulation.

Today's modems can transmit data at speeds up to 300 bits per second.

Because they must convert data between digital and analog forms, fax machines have built-in modems.

Currently the fastest technology is DSL transmission.

The more bandwidth, the faster the connection.

Most cable and digital television companies offer high-speed Internet connection without using a modem.

DSL transmits data in digital form–not analog form–using copper telephone wires.

A high-speed network called Synchronous Optical Network allows telephone companies to offer DSL and other connections.

The first telephone message was sent over a line connecting two ________.

Sending information over a telephone network is called ________.

Which of the following is NOT a form of telecommunications?

What does the term PSTN stand for?

To use the PSTN, people subscribe to one of these.

In analog communications, a person's voice is transmitted as ________.

Cell phones transmit messages by using ________.

Which device lets you connect a digital computer to an analog telephone network and then transmit or receive data?

In this process, a modem changes analog signals to digital signals.

A modem's speed is measured in ________.

Which of the following could NOT be transmitted by a fax machine?

Only 10% of U.S. households connect to the computer using the local phone line loop because ________.

The amount of data that can be sent through a modem or network connection is called ________.

This term describes all high-speed digital connections that transmit at least 1.5 megabits per second.

The term DSL stands for this.

This digital network uses fiber optics to provide bandwidth of up to 40 gigabits per second.