lesson 24

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Across
  1. 3. LAN (WLAN)-a variation of a LAN that uses no physical wires
  2. 5. network-computer architecture in which all computers on a network are equal and there is no computer designed as a server
  3. 6. computer user who invades someone else’s computer either for personal gain or simply for the satisfaction of being able to do it
  4. 7. junction where information arrives from connected computers or peripheral devices and is then forwarded in one or more directions to other computers and devices
  5. 9. known as IEEE 1394 and IEEE 1394b. The IEE 1394 bus standard supports data transfers of up to 400 Mbps and can connect to up to 63 external devices
  6. 11. server-a server that acts as an intermediary between a user and the internet
  7. 13. hardware device that facilitates the transmission of data
  8. 15. area network (LAN)-a series of connected personal computers, workstations, and other devices, such as printers or scanners, within a confined space, such as an office building
  9. 16. largest network used as a communication tool
  10. 19. switched Telephone Network (PSTN)-the world’s collection of interconnected commercial and government owned voice-oriented systems
  11. 20. computer that uses the services of another program
  12. 21. network designed for the exclusive use of computer users within an organization that can not be accessed to users outside the organization
  13. 23. a computer that handles request for data, e-mail, file transfers, and other network services from other computers (clients)
  14. 25. recent wireless technology that can deliver maximum speeds of up to 7Mbps to your cell phone, home computer, or car. Stands for worldwide interoperability for microwave access
Down
  1. 1. area network (WAN)-computer network that covers a large geographic area. Most WANs are made up if several connected LANs
  2. 2. network-computer configuration in which one or more computers on the network act as a server
  3. 4. operating system-high-end programs designed to provide network control and include special functions for connecting computers and other devices into a network
  4. 8. security measures- examine a fingerprint, a voice pattern, or the iris or retina of the eye
  5. 10. subscriber line (DSL)-an internet connection technology that provides for the transfer of information to a computer at a high-speed bandwidth over ordinary copper telephone lines
  6. 12. channels-link from one computer to another through which data can be transmitted
  7. 14. device on the network
  8. 17. network configuration that allows selected outside organizations to access internal information systems
  9. 18. line-a type of fiber-optic telephone line that can transmit up to 1.544 megabits per second or can be used to transmit 24 digitized voice channels
  10. 22. device that directs traffic on a network by dividing data into smaller packets that travel by different routes and then are reassembled at their destination
  11. 24. modem- a device that uses coaxial cable to send and receive data