LaudonEss6_TIF_ch08 - Chapter 8 Telecommunications Networks...

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Chapter 8 Telecommunications, Networks, and Wireless Computing 8-1 Chapter 8 Telecommunications, Networks, and Wireless Computing True-False Questions 1. When selecting appropriate technologies for enterprise networking, Internet technology, XML, and Java allow for maximum connectivity and application integration. Answer: False Difficulty: Medium Reference: p. 266 2. The use of packet switching to increase telecommunications transmission efficiency is one of the three major developments that has shaped contemporary digital telecommunications systems. Answer: True Difficulty: Medium Reference: p. 267 3. Public networking is the linking of separate networks, each of which retains its own identity, into an interconnected network. Answer: False Difficulty: Medium Reference: p. 267 4. Message switching is a technology that breaks messages into small, fixed bundles of data and routes them in the most economical way through any available communications channel. Answer: False Difficulty: Medium Reference: p. 268 5. Peer-to-peer networking has become the predominant model for corporate computing. Answer: False Difficulty: Medium Reference: p. 268 6. The Internet is based on peer-to-peer networking. Answer: False Difficulty: Medium Reference: p. 268 7. A data server is a specialized communications processor that forwards data from one network to another network. Answer: False Difficulty: Medium Reference: p. 268 8. The X.25 packet switching standard uses packets of 128 bytes each. Answer: True Difficulty: Easy Reference: p. 268 9. The OSI model is the dominant model for achieving connectivity among different networks, providing an agreed-on method for breaking up digital messages into packets, routing them to the proper addresses, and then reassembling them into coherent messages. Answer: False Difficulty: Medium Reference: p. 269 10. The PDA connectivity model is the one used in the Internet. Answer: False Difficulty: Medium Reference: p. 269
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8-2 Telecommunications, Networks, and Wireless Computing Chapter 8 11. If two computers are based on different hardware and software platforms, they will not be able to communicate via TCP/IP. Answer: False Difficulty: Medium Reference: p. 270 12. A digital signal is a continuous waveform. Answer: False Difficulty: Easy Reference: p. 270 13. Until recently, fiber-optic cable was the least expensive medium for telecommunications. Answer: False Difficulty: Easy Reference: p. 271 14. Optical networks can transmit voice, data, and video. Answer: True Difficulty: Easy Reference: p. 271 15. Presently, a problem with optical transmission is that it must convert data back and forth to electrical signals. Answer: True Difficulty: Medium Reference: p. 271 16. The electromagnetic spectrum is the wireless transmission medium. Answer: True Difficulty: Medium Reference: p. 272 17. Infrared transmissions fall in a higher frequency range than microwave transmissions.
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