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Write about software change methods.
The software change strategies that could be applied individually or together are: Software maintenance - The changes are made in the software due to requirements. Architectural transformation - It is the procedure of changing one architecture into another form. Software re-engineering - New quality can be added to existing system and then the system is refined for better use of it in future.
Q. Define cohesion and coupling? Give suitable examples. Ans Coupling: Coupling refers to the strength of the relationship between modules in a system. Coupling represents how
State some guidelines for testing The below are some guidelines for testing: i) Test modules thoroughly, cover all the access paths and produce enough data to cover all the
What is a Real time system? Real time system is a software system in which the correct functionalities of the system are dependent upon results formed by the system and the tim
What are the virtues of incremental model? i. The incremental model can be adopted when there are less number of persons associated with the project. ii. Technical risks can
Coupling and Cohesion Data coupling - The data coupling is possible by parameter passing or data interaction. Control coupling - The modules share related control data
Determine the level 0 and level 1 of DFD External entities provide input data for processing. During processing, some intermediate data is generated. After final processing, fi
Compare and contrast two operating systems
Define software testing? Software testing is a critical element of software quality assurance and shows the ultimate review of specification, design, and coding.
What are the two levels of testing? i. Component testing Individual works are tested. Tests are derived from developer's experience. ii. System Testing The group o
Throw-away prototyping Objective: The principal objective of this model is to validate or to derive the system needs. It is developed to decrease requirement risks.
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