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38 a type of communications network consist-ing of

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Unformatted text preview: 38. A type of communications network consist-ing of terminals, processors, channels, com-puters, and control software. 39. Telecommunications technologies that do not rely on physical media such as cables or fiber optics. 27 8 | Module II | Information Technologies discussion questions 1. The Internet is the driving force behind devel-opments in telecommunications, networks, and other information technologies. Do you agree or disagree? Why? 2. How is the trend toward open systems, connectivity, and interoperability related to business use of the Internet, intranets, and extranets? 3. Refer to the Real World Challenge in the chapter. The problems in the case are framed from the perspective of the health care providers. From that of a patient, what would be your concerns about “visiting” a doctor who is maybe hundreds of miles away? What could be done to alleviate those concerns? 4. How will wireless information appliances and services affect the business use of the Internet and the Web? Explain. 5. What are some of the business benefits and management challenges of client/server networks? Network computing? Peer-to-peer networks? 6. What is the business value driving so many companies to install and extend intranets rapidly throughout their organizations? 7. What strategic competitive benefits do you see in a company’s use of extranets? 8. Refer to the Real World Solution in the chapter. Why do some insurance companies refuse to cover telemedicine services, or classify them as “experimental”? What are their concerns? How could those concerns be addressed so that these approaches can be expanded to other geographical areas with similar problems? 9. Do you think that business use of the Internet, intranets, and extranets has changed what busi-nesspeople expect from information technology in their jobs? Explain. 10. The insatiable demand for everything wireless, video, and Web-enabled everywhere will be the driving force behind developments in telecommu-nications, networking, and computing technolo-gies for the foreseeable future. Do you agree or disagree? Why? 1. IPv4 / IPv6 How many addresses are enough? The Internet Protocol version 4 assigns each con-nected computer a four-byte address known as an IP Address. Messages, or packets, each include this ad-dress so that routers know where to forward them. They are the Internet’s version of a mailing address. Each region of the world has been given a range of IP addresses to administer locally, with America taking the largest share. Asia, with a signifi-cantly larger population, received a disproportion-ately small range of numbers and fears running out. Anticipating this problem, the Internet Engi-neering Task Force adopted IPv6, which uses ad-dresses 16 bytes long. Although slow to be adopted, all Internet Root servers now support IPv6, and In-ternet Service Providers are rolling it out as needed while maintaining backwards compatibility for IPv4. The U.S. federal government has mandated IPv4....
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