Answers to the review questions can be found in Appendix A, "Answers to Review Questions."
| 1: | Is Asynchronous Transfer Mode (ATM) a synchronous or asynchronous technique? Explain. |
| 2: | Name three of the advantages of digital signaling over analog signaling? |
| 3: | What does FDM stand for? What rule does FDM obey? |
| 4: | In North America, how many voice channels are in a standard multiplexing scheme for FDM? |
| 5: | Describe the main phases of pulse code modulation (PCM). |
| 6: | What does TDM stand for? What rule does the TDM obey? |
| 7: | What is the purpose of bit number 193 in TDM? |
| 8: | What is a frame in TDM? |
| 9: | What do DS1 and DS-1 stand for? What is the difference between DS1 and DS-1? |
| 10: | What is out-of- band signaling? What is robbed bit signaling? |
| 11: | What do CO, LEC, CLEC, and ILEC stand for? What do they have in common? |
| 12: | What is the role of tandem switches in carrier networks? |
| 13: | What are the main caveats when the enterprise outsources service with the service provider? |
| 14: | What are the three main topologies in Cisco's Ethernet to the First Mile (EFM)? |
| 15: | What does CDMA stand for? Name the 3G minimum speed requirements, as defined by ITU. |