Communications,Networks and the Internet

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Across
  1. 4. is a form of wireless communication designed to share information
  2. 7. __________ Digital Subscriber Line
  3. 9. an international network of networks that connects computers worldwide.
  4. 11. a __________ consists of a collection of computers that share information and communicate with each other over a network.
  5. 12. a WAN can connect networks across a large _____________ area, such as a city or country.
  6. 15. lans can be divided into _______ categories based on how the computers communicate with one another.
  7. 16. a peer-to-peer network allows every computer to _______ directly.
  8. 19. data ___________ channels carry the data from one location to another and can be classified according to bandwidth.
Down
  1. 1. a device used to convert digital signals emitted by the computer into singnals that can be transmitted over the phone.
  2. 2. the range of a wireless network can be extended using a ________.
  3. 3. a ____________ is a group of two or more computers linked together so they can share resources and communicate with one another.
  4. 4. refers to data transmission using ADSL and cable.
  5. 5. a wireless access point contains a radio receiver, encryption and communications software.
  6. 6. determines the volume of data that can be transmitted in a given time.
  7. 8. a _______ can be used where it may be difficult or impractical to use a cabled LAN.
  8. 10. lans in different countries can connect together to form a WAN, using _____________ links.
  9. 13. enable several computers to communicate through a wireless access point at the same time.
  10. 14. used to refer to data transmission over a telephone line using an analogue modem.
  11. 17. bluetooth has a much slower data transfer rate than ______ and a much shorter range.
  12. 18. To access the Internet you need to subscribe to an _________.