System Analysis and Design
The term Parallel Run refers to

None of these
the processing of two different jobs initiated from two terminals.
All of these
the concurrent operation of an existing system and a new system
the same job run on two different computer to test their speeds

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System Analysis and Design
Unit testing is

is checking the logic of one or more programs in the candidate system
running the system with line data by the actual user
testing changes made in an existing or a new program
None of these
making sure that the new programs do in fact process certain transactions according to Specifications

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