Final answer:
Boundary value analysis and decision tables are extensions of equivalence partitioning, while state transition testing is not.
Step-by-step explanation:
An extension of equivalence partitioning is boundary value analysis. This technique focuses on testing values at the boundaries of equivalence classes. It helps identify potential errors that may occur at the edges of these classes. For example, if a program accepts inputs in the range of 1 to 100, boundary value analysis would test values such as 1, 2, 99, and 100.
Another extension of equivalence partitioning is decision tables. Decision tables are used to document complex sets of conditions and corresponding actions. They provide a systematic way to determine test cases based on different combinations of inputs and expected outcomes.
State transition testing is not directly related to equivalence partitioning. It is a technique used to test systems that have different states and transitions between those states. It focuses on verifying that the system behaves correctly when transitioning from one state to another.