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

What are the reasons behind to perform white box testing, What are the reas...

What are the reasons behind to perform white box testing? There are three major reasons behind performing the white box testing. 1. Programmers may have some incorrect assum

Define process maturity, Define process maturity. In recent years there...

Define process maturity. In recent years there has been a important emphasis on process maturity. The Software Engineering Institute. (SEI) has developed a comprehensive model

What is fan-in and fan-out, Define Fan-in and Fan-out Fan-out: A measu...

Define Fan-in and Fan-out Fan-out: A measure of the number of modules which are directly maintained by another module. Fan-in: Indicates that how many modules directly main

Explain inspection, Explain Inspection? Ans) An inspection is more forma...

Explain Inspection? Ans) An inspection is more formalized than a 'walkthrough', typically with 3-8 people containing a moderator, reader, and a recorder to take notes. The subje

State the advantages of prototyping, State the Advantages of Prototyping ...

State the Advantages of Prototyping Advantages of prototyping outperform problems of prototyping. Hence overall, it's a beneficial approach to develop prototype. End user can'

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

How to build the structure chart, Q. How to build the Structure Chart? ...

Q. How to build the Structure Chart? Building the Structure Chart Processes in the DFD are liable to represent one module on the structure chart Efferent processes

How can you create the new system, How can you create the new system  S...

How can you create the new system  System is to be computerised. Following will be created: (i)                 All DVD and CD data will be stored on a database   (ii)

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