Network Hardware and Transmission Media

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Across
  1. 5. a computer in a network that controls one or more printers and stores data to be printed (5,6)
  2. 6. a cable that consists of a single copper wire surrounded by an insulator, grounded shielding and an outer insulator, commonly used over distances of less than a few kilometres
  3. 8. a computer in a network that provides a connection to the Internet (3,6)
  4. 11. a device that allows Wi-Fi devices to connect to a wired network (8,6,5)
  5. 14. a short-range wireless mobile technology used for line-of-sight device communication over short ranges
  6. 16. a short-range wireless technology standard that is used for exchanging data between fixed and mobile devices over short distances
  7. 17. a combination of hardware and software to link two similar networks
  8. 19. an expansion card within a computer or other device, that allows the device to connect to a network (7,9,4)
  9. 21. a device for modulation and demodulation between the digital data of a computer and the analogue signal of a phone line.
Down
  1. 1. a networking device that forwards data packets between computer networks
  2. 2. a type of transmission medium that moves the data through air and space, without the need of a fixed physical connection between the source and the destination
  3. 3. a combination of hardware and software to link two different types of networks
  4. 4. relay stations in space used for the transmission of voice, video and data communications using the electromagnetic spectrum
  5. 7. a cable that consists of two thin insulated copper wires, twisted to form a spiral and reduce interference (7-4)
  6. 9. a high-speed device that receives incoming data packets and redirects them to their destination on a LAN
  7. 10. a controlling computer in a network that stores the program and data files shared by users (4,6)
  8. 12. a computer in a network that stores incoming mail for distribution to users and forwards outgoing mail to appropriate devices (4,6)
  9. 13. a cable free from electromagnetic and radio interference that uses a laser of light to carry data in small glass fibres up to 100 Gbps (5-5)
  10. 15. a central connecting device in a network that forwards data without any change
  11. 18. a type of radio wave used to transmit data from a few meters to several kilometers apart, previously used by television broadcasters
  12. 20. amplify the received/input signal to a higher frequency to expand the coverage area of the network