Operating System MCQs

1019 MCQs  (Page 83 of 102)

A tree structure ______ the sharing of files and directories.
A. Allows
B. May restrict
C. Restricts
D. None of the mentioned
With a shared file _____________
A. Actual file exists
B. There are two copies of the file
C. The changes made by one person are not reflected to the other
D. The changes made by one person are reflected to the other
In UNIX, what is a link?
A. A directory entry
B. A pointer to another file or subdirectory
C. Implemented as an absolute or relative path name
D. All of the mentioned
The deletion of a link ________ the original file.
A. Deletes
B. Affects
C. Does not affect
D. None of the mentioned
When keeping a list of all the links/references to a file, and the list is empty, implies that _____________
A. The file has no copies
B. The file is deleted
C. The file is hidden
D. None of the mentioned
When a cycle exists, the reference count maybe non zero, even when it is no longer possible to refer to a directory or file, due to _______
A. The possibility of one hidden reference
B. The possibility of two hidden references
C. The possibility of self referencing
D. None of the mentioned
Some directory information is kept in main memory or cache to ___________
A. Fill up the cache
B. Increase free space in secondary storage
C. Decrease free space in secondary storage
D. Speed up access
A consistency checker __________________ and tries to fix any inconsistencies it finds.
A. Compares the data in the secondary storage with the data in the cache
B. Compares the data in the directory structure with the data blocks on disk
C. Compares the system generated output and user required output
D. All of the mentioned