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

Explain project estimation techniques, Question: a) List and explain t...

Question: a) List and explain three project Estimation techniques. b) During an estimation exercise, a work breakdown structure (WBS) is used as checklist for the activitie

Layered software architecture, iii. Layered software architectures can be ...

iii. Layered software architectures can be used to reduce coupling between the functions of a system that are closer to the machine and those that are closer to user needs. Why is

What is structured programming and why is it important, What is structured ...

What is structured programming and why is it important? Structured programming is a programming which was coined in the late 1960's to mean programming without using go to stat

Software life cycle, A) In terms of maintenance in software life cycle, doe...

A) In terms of maintenance in software life cycle, does RUP or agile approach give  better support? Describe your answer.   B) Explain how agile development approach and RUP

Define a macro, "State how you would type arguments h, o, w, n, o, w to the...

"State how you would type arguments h, o, w, n, o, w to the macro cat, define(cat, $1$2$3$4$5$6$7$8$9) so that the printed result was how now Describe exactly what happens when

Define measure and metrics, Define measure and metrics. Measure is  a q...

Define measure and metrics. Measure is  a quantitative indication of the extent, dimension, amount or size of some attribute of a product or process. Metrics is termed as th

Disadvantage of software package, Disadvantage of Software package: Th...

Disadvantage of Software package: There are some disadvantages which need to be looked into. They are:  i)  A commercial software package will have a number of built-in

Illustrate about the managed level of maturity model, Level 4 (Managed) ...

Level 4 (Managed) Organisation satisfies all the requirements of level-3. At this level quantitative standards are set for software processes andproducts. Project analysis is

Given titles IOT/ IOE, Dear Sir/ Madam I have an 8 page essay to be written...

Dear Sir/ Madam I have an 8 page essay to be written how much I pay per page? Thanks

No , Hard drive has space, but it keeps telling me that its full and asks m...

Hard drive has space, but it keeps telling me that its full and asks me to delete files. I checked. There is nearly full C drives (8GB) but when i am open c drive and check than ne

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