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

Ethical issue moduel, i want to select topic to my ethical issues assignmen...

i want to select topic to my ethical issues assignment can u propose reasonable topic?

State the software maintenance, What is software maintenance Alters to...

What is software maintenance Alters to the software are made in response to altered requirements but the fundamental structure of the software remains same.

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

Discuss the various strategies of design, Discuss the various strategies of...

Discuss the various strategies of design.  The design strategies are:      Functional design:   The system is designed from a functional viewpoint, initialising from with a

Types of coupling, Types of coupling are:- A) Data coupling B) Stamp...

Types of coupling are:- A) Data coupling B) Stamp coupling C) Control coupling D) External coupling E)Common coupling F) Content coupling

Applicability with reference to software reliability models, Q. Applicabili...

Q. Applicability with reference to software reliability models? Applicability : It is another important characteristic of a model. The model must be judged by its degree of a

Draw dfd for the given requirement, A store is in the business of selling p...

A store is in the business of selling paints as well as hardware items. A numeral of reputed companies supplies items to the store. New suppliers are able to also register with the

Srs, ? A store is in the business of selling paints and hardware items. A n...

? A store is in the business of selling paints and hardware items. A number of reputed companies supply items to the store. New suppliers can also register with the store after pro

Developing prototype software, Introduction Energy consumer in the comp...

Introduction Energy consumer in the computer system is getting critical all around the globe now. Therefore, the ability to figure out the components that consume energy in sys

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