Transcription of The Internet and Its Uses - pearsoncmg.com
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The Internet and Its Uses - pearsoncmg.com
CHAPTER 1 The Internet and Its UsesObjectivesAfter completing this chapter, you should be able to answer the following questions:nHow is the Internet evolving?nHow do businesses and individuals use theInternet?nWhat is the importance of standards in the continuing growth of the Internet ?nWhat is the role of an Internet service provider(ISP)?nHow does the hierarchical structure of theInternet allow the efficient movement of information?nWhat are a point of presence (POP) and anInternet Exchange Point (IXP)?nWhat types of devices do ISPs use to provideservices?nWhat is scalability, and why is it important inthe ISP network?nWhat support teams work at an ISP, and what istheir purpose?Key TermsThis chapter uses the following key terms. You can find the definitions in the page 2electronic commerce (e-commerce) page 2 Request for Comments (RFC) page 3 Internet service provider (ISP) page 4bandwidth page 4digital subscriber line (DSL) page 5 Metro Ethernetpage 7point of presence (POP) page 7 Internet Exchange Point (IXP) page 7 Network Access Point (NAP) page 7 Tier 1 ISP page 9 Tier 2 ISP page 9 Tier 3 ISP page 9 Internet Control Message Protocol (ICMP) page 9transport network page 12 DSL access multiplexer (DSLAM) page 13cable modem terminat
(Cable Service Provider) I SP C ( Satellite Service Provider) 56 kbps Dialup DSL POP POP POP POP This section describes these connection methods as well as dedicated bandwidth options and the role of a point of presence (POP). Dialup Access Dialup access is an inexpensive option that uses a phone line and a modem. To connect to the ISP, a
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