CHAPTER 16 CROSSWORD

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Across
  1. 3. a digital subscriber line modem
  2. 6. (repeaters) a demark extension length of up to 5,000 feet from the telephone company’s demark.
  3. 7. a technology that multiplexes several optical carriers on a single optical fiber by using different wavelengths.
  4. 9. a WAN technology in which variable-length packets are transmitted by switching.
  5. 10. local loop; the physical connection from the customer to the first aggregation device of the provider network
  6. 14. a standard developed by the European Telecommunications Standards Institute. Delineates protocols for 2G digital cellular networks.
  7. 16. a Layer 1 device that connects the serial ports on your router to the provider’s network and connects directly to the demarcation point or location.
  8. 17. evolution the most promising of all emerging 4G technologies. It uses an all-IP based core, it offers the highest data rates, and its compatible with 3G and WiMax.
  9. 18. an artificial satellite stationed in space for telecommunications purposes.
  10. 23. a modem, phone call
  11. 25. a digital, point-to-point WAN technology capable of maximum transmission speeds of about 1.5 Mbps.
  12. 28. a technology for transmitting digital and sometimes even analog signals between two locations on a line-of-sight radio path through the atmosphere.
  13. 30. a method of establishing configuring, maintaining, and terminating the point-to-point connection. It also provides features such as authentication. I’ll give you a complete list of these features coming up soon in the next section.
  14. 31. a channel access method that’s used by various radio communication technologies
  15. 38. a network interface unit is installed between the demarcation location and CSU/DSU at the customer premises equipment location.
  16. 39. a relatively small service area that usually ranges in size from 100 to 2000 customers.
  17. 40. fiber to the premises, a new option for connecting homes and business to the internet.
  18. 43. first generation cellular technology
  19. 45. translates analog signals our ears can hear into a digital stream for transfers across a digital network.
  20. 46. (leased lines)point to point or dedicated connections. A preestablished WAN communications path that goes form the CPE through the DCE switch and then over to the CPE of the remote site.
  21. 48. a type of wireless technology that is only used for short distance wireless transmissions. Wireless technology that creates a Personal Area Network (PAN).
Down
  1. 1. the cable from the provider demarc to the customer equipment
  2. 2. broadband services sent over a high-bandwidth channel above the baseband voice channel on a single pair of wires.
  3. 4. copper wire or glass fiber to carry bits as voltages or light pulses
  4. 5. the use of air transmission media
  5. 8. the precise spot where the service provider’s local exchange carrier’s responsibility ends and the Customer Premises Equipment (CPE) begins.
  6. 11. WAN switching method which allows you to share bandwidth with other companies to save money.
  7. 12. equipment that’s owned by the service provider but located on the subscriber’s (your) property.
  8. 13. where all cable signals are received, processed, and formatted. The signals are then transmitted over the distribution network from the headend.
  9. 15. is a data-carrying mechanism that emulates some properties of a circuit-switch network over a packet-switched network.
  10. 19. Plain old telephone service
  11. 20. the minimum number of wires required to handle the norms of usage capacity plus a few auxiliary lines for peak usage.
  12. 21. the centralized point that has a piece of equipment attach. The switch opens communications sessions when its initiated by a user who dialed the phone number of a receiver and keeps the line open until the conversation ends and the session is closed.
  13. 22. is considered a true 4G technology and its based on the IEEE 802.16 standard.
  14. 24. the maximum bandwidth of data guaranteed to be delivered or the average amount that the service provider will allow you to transmit, based upon what you have purchased.
  15. 26. uses larger chunks of the light spectrum and is define by wavelengths, whereas DWDM is defined by frequencies.
  16. 27. involves breaking messages into chunks at the sending device. Each packet can be sent over any number of routers on its way to its destination
  17. 29. the phone company building that connects the customer’s network to the provider’s switching network.
  18. 32. is a metropolitan are network that based on Ethernet standards and can connect a customer to a larger network and the Internet.
  19. 33. what links together the thousands of devices connected to the provider’s cloud.
  20. 34. the maximum speed at which the frame relay interface can transmit.
  21. 35. a pair of copper wires that connects the demark to the closest switching office (central office).
  22. 36. is a trunk line inside a WAN provider’s network. This network is a collection of switches and facilities owned by the ISP.
  23. 37. a data link layer protocol that can be used over either a synchronous serial (dial-up) or synchronous serial (ISDN) media.
  24. 41. A method for encapsulating datagrams over serial links and the default serial encapsulation on Cisco serial links.
  25. 42. multiplexes within a specific band allowing for the use of erbium-doped fiber amplified that boost the signal.
  26. 44. first DSL technology to use a higher frequency spectrum of copper twisted-pair cables.
  27. 47. values used on frame relay interfaces to distinguish between different virtual circuits.