System Analysis and Design
The systems conversion technique of totally removing the existing system and immediately implementing the new system is called as

phased conversion
None of these
crash conversion
pilot conversion
parallel run

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System Analysis and Design
Acceptance testing is

testing changes made in an existing or a new program
is checking the logic of one or more programs in the candidate systems
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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