System Analysis and Design
An audit trial is

All of these
post-auditing the system after its implementation
None of these
designed to permit tracing of any input record or process performed on a system, back toits original sources
test data used by the system auditor

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System Analysis and Design
The rule(s) to follow in constructing decision tables is (are):

standardized language must be used consistently.
all of the listed here
a decision should be given a name
the logic of the table is independent of the sequence in which conditions rules are written, but the action takes place in the order is which the events occur.

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System Analysis and Design
Positive testing is

is checking the logic of one or more programs in the candidate system
testing changes made in an existing or a new program
making sure that the new programs do in fact process certain transactions according to Specifications
running the system with line data by the actual user

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