Exam 9: Wide Area Networks

Although ___________________ is technically defined as "the transmission of voice or other sounds by means of electrical signals sent over wires or radio waves," it is usually considered the same as the telephone system.

The cost for setting up and using a virtual private network (VPN) is very high in comparison to using trunk-based leased lines.

The top speed at which data can be sent over an analog dial-up connection is about _____.

Define identity theft and how it can be prevented.

List and describe 5 differences between a local area network and a wide area network.

A virtual private network (VPN) uses the public Internet to transmit data.

Because they orbit so close to the earth, ____________________ satellites must travel at high speeds so the earth's gravity does not pull them back into the atmosphere.

The trunk-based leased line _____ runs over twisted pair copper wires at a speed of 1.5 Mbps.

Circuit switching of telephone calls is done through a device called a switch , which is located at the telephone company's central office.

At the carrier's central office, all of the digital subscriber lines (DSL) connect into a(n) ____________________, which in turn connects to the WAN.

When a cellular telephone user moves toward the next cell, the cellular telephone automatically associates with the transmitter of that cell. This is known as _____.

Low earth orbiting (LEO) and _____ satellites are typically used for WAN data connections.

Sending and receiving transmissions at different speeds over a wide area network is known as _____ transmission.

Each is a difference between a local area network and a wide area network except _____.

A drawback to cable modems is that _____.

Frame Relay is unique in that it can support data, voice, and video all on one network.

Explain how Digital Subscriber Lines (DSL) can send transmissions up to 1.5 Mbps while a standard dial-up line can only send at 56 Kbps.

Digital cellular telephony today is called 2.5G, and these networks operate at a maximum speed of _____.

Leased data connections have all of these features except _____.

It is not possible to carry on a conversation over the same telephone line while transmitting data using digital subscriber line (DSL) technology.