System Analysis and Design
The time lag, between the keying of the last character on the keyboard input and the appearance of the first output character on the screen, is known as

Key
System review
batch Processing
None of these
response time

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System Analysis and Design
Acceptance testing is

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

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