nine
six
five
two
the number of records added or deleted from a file composed to the original number of records in that file
efficiency with which non-sequential files are processed
the extent where the records of the file are contiguous and in proximity to others
percentage of records that has changed in a given time period.
four
random files
contiguous sequential file
indexed sequential file
all of these
a cyclic graph directory
tree structured direction
one level directory
none of these