A consistency checker _________ and tries to fix any inconsistencies it finds.

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 A consistency checker _________ and tries to fix any inconsistencies it finds.

1.compares the data in the secondary storage with the data in the cache

2. compares the data in the directory structure with the data blocks on disk

3.compares the system generated output and user required output

4.All of the Mentioned

Posted Date:-2022-03-29 08:25:11

More MCQS Questions and answers

  1. A _________ directory is mounted over a directory of a _______ file system.
  2. A consistency checker _________ and tries to fix any inconsistencies it finds.
  3. A systems program such as fsck in ______ is a consistency checker.
  4. In UNIX, even an ’empty’ disk has a percentage of its space lost to ______
  5. The heads of the magnetic disk are attached to a _____ that moves all the heads as a unit.
  6. The set of tracks that are at one arm position make up a _____
  7. _____ tend to represent a major bottleneck in system performance.
  8. ______ mounts, is when a file system can be mounted over another file system, that is remotely mounted, not local.
  9. _______ in NFS involves the parsing of a path name into separate directory entries – or components.
  10. ________ writes occur in the order in which the disk subsystem receives them, and the writes are not buffered.
  11. A file being read or written sequentially should not have its pages replaced in LRU order, because _______
  12. A machine in Network file system (NFS) can be ________
  13. A mount operation includes the ______
  14. A process is moved to wait queue when I/O request is made with _______
  15. A server crash and recovery will __________ to a client.
  16. A single NFS write procedure _________
  17. All the changes that were done from a transaction that did not commit before the system crashed, have to be _____
  18. By preallocating the inodes and spreading them across the volume, we ___________ the system performance.
  19. Device drivers are implemented to interface ______
  20. Each set of operations for performing a specific task is a _____
  21. Every NFS request has a _________ allowing the server to determine if a request is duplicated or if any are missing.
  22. For every pair of component and directory vnode after path name translation ______
  23. I/O hardware contains ______
  24. In _______ information is recorded magnetically on platters.
  25. In ___________ writes, the data is stored in the cache.
  26. In the optimized technique for sequential access ___________ removes a page from the buffer as soon as the next page is requested.
  27. In UNIX, the file handle consists of a __________ and _____
  28. Once the changes are written to the log, they are considered to be ________
  29. Some directory information is kept in main memory or cache to ______
  30. The _________ becomes the name of the root of the newly mounted directory.
  31. The data-in register of I/O port is ______
  32. The device-status table contains ____
  33. The device-status table contains ________
  34. The host sets _____ bit when a command is available for the controller to execute.
  35. The mount mechanism ________ a transitive property.
  36. The mount request is mapped to the corresponding __________ and is forwarded to the mount server running on the specific server machine.
  37. The NFS protocol __________ concurrency control mechanisms.
  38. The NFS servers _______
  39. The server maintains a/an ________ that specifies local file systems that it exports for mounting, along with names of machines that are permitted to mount them.
  40. The server must write all NFS data ________
  41. The time taken for the desired sector to rotate to the disk head is called _______
  42. The time taken to move the disk arm to the desired cylinder is called the ______
  43. What is a circular buffer?
  44. When a client has a cascading mount _______ server(s) is/are involved in a path name traversal.
  45. When an entire committed transaction is completed, _______
  46. When hardware is accessed by reading and writing to the specific memory locations, then it is called ______
  47. Which buffer holds the output for a device?
  48. Which hardware triggers some operation after certain programmed count?
  49. Which one of the following connects high-speed high-bandwidth device to memory subsystem and CPU.
  50. With _______ a requested page and several subsequent pages are read and cached.
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