1. which types of file organization are supported by magnetic tape?

random files

contiguous sequential file

indexed sequential file

all of these

2. Number of minimal set of required file operations are

two

four

five

six

3. The volatility of a file refers to

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.

4. How many common file type are there?

nine

six

five

two

5. Wild-card specifiers

provide an easy way of finding groups of related files

are only used when printing the contents of files

can be used when writing a file

allow several files to be read simultaneously

6. System supports two types of file, which are

text files

executable binary flies

both (a) and (b

none of these

7. Disaster recovery

is needed by every installation

is never needed

varies in degree between installations

requires off-site computer for immediate use

8. The simplest directory structure is

single level directory

two level directory

tree structure directory

none 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. Solution of name collision problem is

single level directory

two level directory

tree structure

all of these