Answer:
Boundary tests are designed to check a program's response to extreme input values. Extreme output values are generated by the input values. It is important to check that a program handles input values and output results correctly at the lower and upper boundaries. Keep in mind that you can create extreme boundary results from non-extreme input values. It is essential to analyze how to generate extremes of both types. In addition. sometime you know that there is an intermediate variable involved in processing. If so, it is useful to determine how to drive that one through the extremes and special conditions such as zero or overflow condition.
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