unit 4

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