lesson 24 vocabulary

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Across
  1. 1. operating system high-end programs designed to provide network control and include special functions for connecting computers and other devices into a network
  2. 3. a junction where information arrives from connected computers or peripheral devices and is when forwarded in one or more directions to other computers and devices
  3. 4. expert computer user who invades someone's else's computer either for personal gain or simply for the satisfaction of being able to do it.
  4. 6. communications hardware device that facilitates the transmissions off data
  5. 8. a recent wireless technology that can deliver maximum speeds of up to 7 Mbps to your cell phone, home computer, or car. stands fro worldwide interoperability for microwave access.
  6. 10. Switched Telephone Network (PSTN) the worlds collection of interconnected commercial and government owned voice-organized systems
  7. 12. security measures refers to metrics related to human characteristics
  8. 14. 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. 15. network computer configuration in which one or more computers on the network acts as a server.
  10. 17. a device on the network
  11. 18. the largest network used as a communication tool
  12. 19. 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
  13. 20. server a server that acts as an intermediary between a user and the internet
  14. 21. a network configuration that allows selected outside organizations to access internal information systems.
  15. 23. 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.
Down
  1. 2. a 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.
  2. 5. channels link from one computer to another through which data can be transmitted
  3. 7. modem a device that uses coaxial cable to send and receive data
  4. 8. LAN (WLAN) a variation of a LAN that uses no physical wires.
  5. 9. network computer architecture in which all of the computers on a network are equal and there is no computer designated as the server
  6. 11. a network designed for the exclusive use of computer users within an organization that cannot be accessed by users outside the organization
  7. 13. a computer that uses the services of another program.
  8. 16. a combination of hardware and software that creates a buffer between an internal network rand the internet to prevent unauthorized access.
  9. 22. area network(WAN) computer network that covers a large geographical area. Most WAN's are made up of several connected LAN's