The names of black box test design techniques:

Equivalence Partitioning
Boundary Value Analysis
Decision Table Testing
State Transition Testing
Pairwise Testing
Cause-Effect Graphing
Error Guessing

Black box testing is a software testing technique where the internal structure and implementation details of the system under test are not known to the tester. Instead, the tester focuses on testing the system's functionality, inputs, and outputs. There are several black box test design techniques used to create test cases. Here are some commonly used techniques:

Equivalence Partitioning:
Divides the input data into groups or partitions that are expected to exhibit similar behavior.
Test cases are derived to cover each partition, ensuring representative test coverage.

Boundary Value Analysis:
Focuses on the boundaries or extreme values of input data partitions.
Test cases are designed to test the behavior at the lower and upper boundaries of the partitions.

Decision Table Testing:
Represents complex business logic or business rules using a table format.
Test cases are derived by considering all possible combinations of inputs and their corresponding expected outputs.

State Transition Testing:
Identifies and tests the transitions between different states of a system.
Test cases are designed to cover valid and invalid state transitions and verify the system's behavior accordingly.

Pairwise Testing:
Selects a subset of test cases that covers all possible combinations of input parameters.
It reduces the number of test cases required while still providing significant coverage.

Cause-Effect Graphing:
Analyzes the relationship between system inputs (causes) and outputs (effects).
Test cases are derived to cover all possible combinations of causes and effects.

Error Guessing:
Relies on the tester's experience and intuition to identify potential errors or defects.
Test cases are designed based on the tester's assumptions and knowledge of common error-prone areas.

These techniques help in systematically designing test cases that provide maximum coverage and increase the likelihood of finding defects in the system.

Testers can combine multiple techniques based on the project's requirements and constraints to achieve comprehensive test coverage.

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