What is a circular buffer?

A. Writes to the end of its space and then continues at the beginning
B. Overwrites older values as it goes
C. All of the mentioned
D. None of the mentioned

When an entire committed transaction is completed, ___________

A. It is stored in the memory
B. It is removed from the log file
C. It is redone
D. None of the mentioned

Once the changes are written to the log, they are considered to be ________

A. Committed
B. Aborted
C. Completed
D. None of the mentioned

Each set of operations for performing a specific task is a _________

A. Program
B. Code
C. Transaction
D. All of the mentioned

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

A systems program such as fsck in ______ is a consistency checker.

A. Unix
B. Windows
C. Macintosh
D. Solaris

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

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

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

The deletion of a link ________ the original file.

A. Deletes
B. Affects
C. Does not affect
D. None of the mentioned