Operating System-Unit 5

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Across
  1. 3. Holds the only copy of the data
  2. 5. Region of fast memory that holds copies of data
  3. 6. Any malicious program which is used to hack into a computer
  4. 9. Which register is read by the host to get input
  5. 11. Set of wires and a rigidly defined protocol that specifies set of messages
  6. 12. Mechanism of providing security to the information from unauthorized persons
  7. 14. It is a process in which information is converted into a form which cannot be understood by unauthorized user
  8. 15. ____keeps state information about the use of I/O components
Down
  1. 1. Collection of access rights
  2. 2. Hardware mechanism that allows a device to notify the CPU
  3. 4. Major security problem for os is
  4. 7. Mechanism that will provide a protection to system
  5. 8. Self replicating and are designed to infect other programs
  6. 10. Collection of electronic that can operate a port, a bus or a device
  7. 13. Someone who seeks and exploits weakness in a system or network