System Analysis and Design
Unit testing is

running the system with line data by the actual user
is checking the logic of one or more programs in the candidate system
None of these
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

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System Analysis and Design
The advantage of Purchase Option is (are)

No financing is requird. The risk of system obsolescence is shifted to the lessor
Insurances, maintenance, and other expenses are included in the rental charge
the flexibility of modifying the system at will
None of these
All of these

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System Analysis and Design
Most algorithms follow the format of

Entering the input items, then processing the input items, and then displaying the output items
Entering the output items, then displaying the output items, and then processing the output items
Entering the input items, then processing the output items, and then displaying the output items
Entering the input items, then displaying the input items, and then processing the output items
Entering the output items, then processing the output items, and then displaying the output items

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