Chapter 11: Voice and Data Delivery Networks
TRUE/FALSE
1. The Internet can transfer conventional data and voice data.
ANS: T PTS: 1 REF: 308
2. It wasn’t until the 1950s that POTS began carrying computer data signals as well as voice signals.
ANS: F PTS: 1 REF: 308
3. Only two wires are required to complete a telephone circuit.
ANS: T PTS: 1 REF: 308
4. A trunk has a unique telephone number associated with it.
ANS: F PTS: 1 REF: 309
5. Subscriber loops usually transmit digital signals, which require amplifiers every few kilometers.
ANS: F PTS: 1 REF: 309
6. Prior to 1984, AT&T (American Telephone and Telegraph) owned all the long-distance telephone lines in the United States.
ANS: T PTS: 1 REF: 310
7. Telephone systems were originally designed to transmit the human voice.
ANS: T PTS: 1 REF: 312
8. The more information you wish to send over a medium, the lower the frequency of the signal you need to represent that information.
ANS: F PTS: 1 REF: 312-313
9. When they were originally introduced many years ago, dial-up modems were capable of data transfer speeds of merely 15 to 30 bits per second.
ANS: F PTS: 1 REF: 313
10. A V.92 modem can place a data connection on hold should someone call the user’s telephone number.
ANS: T PTS: 1 REF: 314
11. An asymmetric service is useful for an Internet connection in which the bulk of the traffic comes down from the Internet to the workstation.
ANS: T PTS: 1 REF: 315
12. Most residential DSL services are symmetric.
ANS: F PTS: 1 REF: 315
13. There is only one DSL format in use today.
ANS: F PTS: 1 REF: 316-317
14. A cable modem is a physical device that separates the computer data from the cable television video signal.
ANS: T PTS: 1 REF: 317
15. Cable modem connections are typically symmetric.
ANS: F PTS: 1 REF: 317
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