Electronic Commerce, 7th Edition Solutions 2-1 Electronic Commerce, 7th Edition 14188-37032 Chapter 2 Solutions Review Questions 1. What were the main forces that led to the commercialization of the Internet? Summarize your answer in about 100 words. Answer: The Internet was born out of the need for the U.S. government, specifically the Defense Department, to communicate with its weapons installation distributions all over the world. This idea, in the hands of researchers and scientists evolved even further allowing those researchers the capability to communicate with their colleagues at other universities. As personal computers became more popular and affordable, companies increasingly wanted to construct their own networks. This all led to the dramatic increase in business activity, but the commercialization of the Internet was really spurred by the emergence of the World Wide Web. The software that allowed computers to communicate while on the Internet is still the largest category of traffic today 2. Describe in two paragraphs the origins of HTML. Explain how markup tags work in HTML, and describe the role of at least one person involved with HTML’s development. Answer: SGML is a software language for describing electronic documents and how they should be formatted as well as displayed. This language is the precursor of HTML, which is used by all documents on the Web. Robert Calliau and Tim Berners-Lee independently invented HTML at the CERN research center in Switzerland. HTML’s document type definition is easier for users to learn and use for describing formatting and displaying electronic documents by Meta tag codes. 3. In about 200 words, compare the POP e-mail protocol to the IMAP e-mail protocol. Describe situations in which you would prefer to use one protocol or the other and explain the reasons for your preference. Answer: A POP message can tell the e-mail computer to send mail to the user’s computer and to delete it from the e-mail computer; to send mail to the user’s computer and do not delete it; or simply to ask whether new mail has arrived. IMAP protocol performs the same basic functions as POP, but includes additional features that can instruct the e-mail server to send only selected messages to the client instead of all messages. It also allows the user to view only the headers and the e-mail sender’s name before deciding to download the entire message. One would choose
Electronic Commerce, 7th Edition Solutions 2-2 IMAP if they have a need for a more robust system that allows them to access their email from different computers at different times. 4. In about 400 words, describe the similarities and differences between XML and HTML. Provide examples of at least two situations in which you would use XML and two situations in which you would use HTML. Answer:
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