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6. The allocation map
is used to store program data
specifies which blocks are used by which file
is updated by applications programs
allow programs to erase files
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7. A partitioned data set is most used for
storing program data
storing ISAM files
a program or source library
storing backup information
8. The solution of name collision problem is
single level directory
two-level directory
tree structure
all of these
9. An incremental backup
uses more tapes
should be done each month
saves only files that have recently changed
saves all files
10. The simplest directory structure is
two level directory
tree structure directory
none of these
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