Chapter 12

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