unit 4

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Across
  1. 3. Directory structure that allows users to create their own directories within a larger one.
  2. 4. A data structure used to manage access permissions and user rights for files.
  3. 5. Disk scheduling algorithm that services requests in one direction, then reverses direction.
  4. 7. A file system operation that makes a storage device accessible at a specified point.
  5. 9. A method of free space management using a sequence of linked blocks.
  6. 10. A mechanism used to restrict unauthorized access to files.
  7. 11. A file allocation method that assigns disk blocks in scattered locations.
Down
  1. 1. The structure used to track free and used space in blocks.
  2. 2. Data structure used by operating systems to store metadata about files.
  3. 6. Type of access method where data is read or written in order.
  4. 8. A compact representation of free and allocated space using bits.
  5. 9. A process that ensures no two users write to the same file simultaneously.