System Analysis and Design
A design that consists of a hierarchy of modules; each module has a single entry and a single exit subroutine, is known as

Tuple
None of these
Turnaround
hierarchy structure
top-down design

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System Analysis and Design
Acceptance testing is

running the system with line data by the actual user
is checking the logic of one or more programs in the candidate systems
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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