CHAPTER 16 CROSSWORD

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