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