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Write definition of DFD?
Data Flow Diagram supplies the information flow and the transforms that are used on the data as it moves from input to output.
Why testing is vital with respect to software?
A manifestation of an error in software. A fault, if encountered, might cause a failure.
Testing conducted to verify whether or not a system satisfies its acceptance criteria and to enable the customer to verify whether or not to accept the system. Contrast with testin
Explain the concept of Decision Tables Decision table models complex logic into precise yet compact way. A decision table lists causes and effects in a matrix. Every column
Define the factors of prime concern for system modeling Following four factors are of prime concern for system modeling: 1. System modeling is undertaken with some simplifyi
A selection method in which test data are chosen to lie along "boundaries" of the input domain [or output range] classes, data structures, procedure parameters, etc. Choices often
Implementing the program with all possible combinations of values for program variables. Feasible only for small, simple programs.
Q. When we need Re-Engineer? When the system changes are mainly confined to part of the system then re-engineer that part. When hardware or else software support become
Write the steps followed in testing? i. Unit testing - The individual components are tested in this type of testing. ii. Module testing - Related collection of independent c
Q Define the failure intensity of the Basic model? Ans: The failure intensity of the Basic model is λ (μ) = λ 0 [1 - μ / v 0 ] Where λ 0 is the initial failure inten
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