System Analysis and Design
Main characteristic of "ring", in Data structure, is

First record points only to the last record
Many records point to one record
Each record points to all other records
Last record points to the first record

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System Analysis and Design
Acceptance testing is

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

the key information of programming
a program statement that violates one or more rules of the language in which it is written
the elapsed time between the receipt of the input and the availability of the output
None of these
a group of related fields

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System Analysis and Design
System prototyping helps the designer in

all of the listed here
making the programmers understand how the system will function.
communicating to the user, quickly, how the system, when developed, will look like and get a feedback.
giving a demo of the software, to the system manager to whom he reports

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