Testing Startegies Unit-III

What is the primary objective of Data Flow Testing?

• Identify control flow errors

• Analyze how variables are defined and used

• Improve code readability

• Optimize memory usage

A variable that is defined but never used is called a:

• Dead variable

• Unused definition

• Control variable

• Execution error

In Data Flow Testing, which of the following is NOT a type of variable use?

• Computational use

• Predicate use

• Iteration use

• Definition use

The sequence of program execution where a variable is defined and later used is called:

• DU Path

• Code coverage

• Function call

• Control flow

A variable that is used before being defined is an example of a:

• Dead code

• Undefined use anomaly

• Loop invariant

• Constant variable

The goal of Data Flow Testing is to identify:

• Execution time efficiency

• Logical errors in variable usage

• Syntax errors in the program

• Memory management issues

Data Flow Testing is based on which type of program representation?

• Data Flow Graph

• State Transition Diagram

• Use Case Diagram

• Class Diagram

What are the main components of a Data Flow Graph?

• Variables and Operators

• Nodes and Edges

• Definitions and Uses

• Functions and Loops

What does 'DU' stand for in Data Flow Testing?

• Data Unit

• Definition-Use pair

• Data Utility

• Domain Usage

A variable that is redefined before being used is an example of:

• Redundant execution

• Undefined behavior

• Overwritten definition anomaly

• Predicate misuse