File Systems
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Questions and Answers

Which of the following statements are correct about special file events?

  • File events may be incomplete if, for example, buffers are filling up. (correct)
  • File events describe file system accesses and changes. (correct)
  • File events cannot be obtained for all mounted file systems. (correct)
  • On Linux systems, file system events are signaled via special file descriptors. (correct)

    • Which of the following statements are correct about POSIX fcntl file locks?

  • Locks can cover entire files or only a region of a file (record locks). (correct)
  • File locks are advisory, i.e., they can be ignored by applications. (correct)
  • Applications sometimes use the existence of files as way to indicate that some other file is locked. (correct)
  • Locks are associated to a process and they will be released when the process terminates. (correct)

    • Which of the following statements are correct about file names?

  • File systems always distinguish uppercase and lowercase letters.
  • All names of files in a directory must be unique. (correct)
  • File systems have different sets of reserved characters (e.g., path separators). (correct)
  • On Unix file systems, the path /usr/./../bin/.. refers to the root of the file system. (correct)

    • Which of the following statements are correct about permissions in file systems?

    <p>File permissions can control under which rights a program is executes.</p> Signup and view all the answers

    Which of the following statements are correct about file systems using index nodes (inodes)?

    <p>The attributes of a file system object are stored in the index node.</p> Signup and view all the answers

    Which of the following statements are correct about links in file systems?

    <p>A hard link is resolved at creation time while a symbolic link is resolved when a the name is used to access a file system object.</p> Signup and view all the answers

    Which of the following statements are correct about mounting file systems?

    <p>Mounting a file system on a directory usually implies that any content of the directory becomes inaccessible.</p> Signup and view all the answers

    Which of the following statements are correct about special file systems?

    <p>, An user space file system is used to expose a file system implemented in user space to user space applications.</p> Signup and view all the answers

    Which of the following statements are correct about virtual file systems?

    <p>The virtual file system resolves names to virtual inodes and maintains suitable directory entry caches.</p> Signup and view all the answers

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