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 transform mapping, What is Transform mapping? The transform map...

What is Transform mapping? The transform mapping is a set of design steps applied on the DFD in order to map the transformed flow characteristics into exact architectural style

Discuss the reuse of software at different levels, Question 1 Discuss the ...

Question 1 Discuss the Limitation of the linear sequential model in software engineering Question 2 What is Software reliability? Why reliability is more important than effic

Driven development, what is driven development?give example what benifit of...

what is driven development?give example what benifit of driven development

Write down the concept of functional independence, Write down the concept o...

Write down the concept of Functional independence.  a. Functional independence is gained by developing modules with "single minded" function and an "aversion" to extreme intera

The design of the software., Software Engineering class assignment The ...

Software Engineering class assignment The design of the software. You must do 2 things: (1) report of the software design, (2) implement the software as per the design, and

What are the different rapid prototyping techniques, What are the different...

What are the different Rapid prototyping techniques? i. Dynamic high level language development. ii. Database programming. iii. Component and application assembly.

The worker pool multi-threading architecture, QUESTION (a) Compare the ...

QUESTION (a) Compare the worker pool multi-threading architecture with the thread-per-request architecture. (b) What thread operations are the most significant in cost? (

What is stepwise refinement, What is stepwise refinement? Stepwise Ref...

What is stepwise refinement? Stepwise Refinement:- Stepwise Refinement is a top-down design method originally proposed by Niklaus Wirth. A program is developed by successively

What is stepwise refinement, Q. What is stepwise refinement? Stepwise R...

Q. What is stepwise refinement? Stepwise Refinement:-Stepwise Refinement is a top-down design strategy initially proposed by Niklaus Wirth. A program is developed by consecutiv

What are the benefits of modular design, What are the benefits of modular d...

What are the benefits of modular design? Changes made during testing and maintenance becomes manageable and they do not affect other modules.

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