SolStd09 - CHAPTER 9 Using Telephone and Cable Networks...

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1 CHAPTER 9 Using Telephone and Cable Networks Solutions to Odd-Numbered Review Questions and Exercises Review Questions 1. The telephone network is made of three major components: local loops , trunks , and switching offices . 3. A LATA is a small or large metropolitan area that according to the divestiture of 1984 was under the control of a single telephone-service provider. The services offered by the common carriers inside a LATA are called intra-LATA services. The services between LATAs are handled by interexchange carriers (IXCs). These car- riers, sometimes called long-distance companies, provide communication services between two customers in different LATAs. 5. Telephone companies provide two types of services: analog and digital . 7. Telephone companies developed digital subscriber line (DSL) technology to pro- vide higher-speed access to the Internet. DSL technology is a set of technologies, each differing in the first letter (ADSL, VDSL, HDSL, and SDSL). The set is often referred to as xDSL, where x can be replaced by A, V, H, or S. DSL uses a device
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SolStd09 - CHAPTER 9 Using Telephone and Cable Networks...

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