Define software reliability, Software Engineering

Assignment Help:

Define software reliability. What is the difference between hardware & software reliability?

Ans: Software reliability is the possibility that software will provide failure-free operation in a fixed environment for a fixed interval of time. Probability of failure is the possibility that the software will fail on the next input selected. Software reliability is usually measured per some unit of time whereas probability of failure is usually time independent. These two measures are able to be easily related if you know the frequency with which inputs are executed per unit of time. Mean-time-to-failure is an average interval of time between failures this is as well sometimes referred to as Mean-time-before-failure.

Software reliability is liable to change repeatedly during test periods. While hardware reliability may perhaps change during certain periods such as initial burn in or the end of useful life however it has a much greater tendency then software value.

Hardware faults aren't physical faults whereas software faults are design faults that are harder to classify, visualise, detect and correct. In reality the division among hardware and software reliability is somewhat artificial. Both perhaps defined in the same way therefore one may combine hardware and software reliability to get system reliability. The basis of failure in hardware has generally being physically deterioration.


Related Discussions:- Define software reliability

What is v- diagram (model), What is V- Diagram (model)? Ans) A diagram t...

What is V- Diagram (model)? Ans) A diagram that imagine the order of testing activities and their corresponding phases of growth

Explain length of code - software metrices, Explain Length of code This...

Explain Length of code This is a measure of the size of a program. Usually, the larger the size of the code of a component, the more difficult and error-prone that component is

Explain iterative enhancement model, Explain Iterative Enhancement model ...

Explain Iterative Enhancement model Iterative Enhancement model: This model incorporates alters in the software based on the analysis of the existing system. Also the complet

What is cycle stealing dma operation, What is cycle stealing DMA operation?...

What is cycle stealing DMA operation? Cycle Stealing: In this process, the DMA controller transfers one data word at a time, after which it must return control of the buses to

What is software configuration management, What is Software configuration m...

What is Software configuration management? ans)Software Configuration Management (SCM) is the control and the recording of alter that are made to the software and documentation

What are the testing principles of software testing, What are the testing p...

What are the testing principles the software engineer must apply whereas performing the software testing? i. All tests should be traceable to customer requirements. ii. Test

What is software architecture, What is software architecture The softwa...

What is software architecture The software architecture of a program or computing system is the structure or structures of the system, which comprises software components, the

Explain regression testing, Regression test cases which a program has previ...

Regression test cases which a program has previously implemented correctly in order to detect errors spawned by changes or corrections done during software development and maintena

Distinguish between verification and validation, Distinguish between verifi...

Distinguish between verification and validation. Verification refers to the set of activities that make sure that software correctly executes a specific function. Validation re

Write Your Message!

Captcha
Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd