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Unformatted text preview: Homework Updated January 2007 CHAPTER 7 Wide Area Networks (WANs) Last Name: ____________________________________________________ First Name: ____________________________________________________ Due Date: __________________________________ Test Your Understanding 1. a) How are telephony and wide area networking related? b) What are the three main purposes for WANs? c) Compare LAN and WAN transmission speeds. d) Why are they different? e) What are carriers, and why must they be used? f) How are prices and costs related in carrier WAN services? 2. Distinguish between the technologies of leased line voice networks and data networks. 3. a) What is the advantage of a full mesh leased line network? b) What is the disadvantage? c) What is the advantage of a pure hub-and-spoke leased line network? d) What is the disadvantage? e) Do most leased line networks use a full mesh or a pure hub-and-spoke topology? 4. a) Below what speed are there different leased line standards in different parts of the world? b) At what speeds do the slowest leased lines run? c) What is the exact speed of a T1 line? d) What are the speeds of comparable leased lines in Europe and Japan ? e) Why are fractional T1, E1, and J1 speeds desirable?...
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- Spring '07