Chapter 12

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Across
  1. 2. use of appropriate hardware and software to allow transmission of electronic messages between users on separate computers
  2. 3. data produced by the computer system
  3. 5. hardware device that converts digital signals to analog signals for transfer over communication lines or links
  4. 8. the combination of a username and password that authorizes an individual to open a software application or access certain features
  5. 10. a secret sequence of characters that allows an authorized computer operator access to certain programs or features
  6. 11. data stored for processing at periodic intervals
  7. 16. an electronic tool that stores related files together
  8. 17. time a computer cannot be used because of maintenance or mechanical failure
  9. 18. a program or piece of software designed and written to fulfill a particular purpose of the user
  10. 19. technology that uses radio waves rather than wires or cables for communication between peripherals
  11. 21. a printed copy of data in a file
  12. 22. a network security system designed to prevent unauthorized access to or from a private network
  13. 26. a collection of data stored in one unit identified by a file name
  14. 27. a system of two or more computers linked together for the purpose of sharing information
  15. 28. to startup the computer
  16. 29. process of eliminating errors from input data
Down
  1. 1. a copy of data or software created at periodic intervals to help protect against data loss
  2. 4. a short name that uniquely identifies an individual to a computer system or software application
  3. 5. a list of options available to the software user
  4. 6. a computer program that allows users to perform a specific tasks
  5. 7. a device that reads disks using a magnetic or optical read/write head.
  6. 9. the act of uploading or downloading data
  7. 12. the physical equipment that is used by a computer to process data
  8. 13. device required for the input output processing and storage of data
  9. 14. feature of storage devices that allows the data to be seen but not changed
  10. 15. the act of receiving data from another computer or storage device
  11. 20. the act of entering a username and password to gain access to a software application
  12. 23. to enter data into the computer system data entered into the system
  13. 24. to code or scramble computer data so that it is unreadable by anyone who does not have decoding key
  14. 25. the act of sending data from one computer or storage device to another