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

Ftr, EXPLAIN ABOUT DEFECT AMPLIFICATION AND REMOVAL IN SOFTWARE ENGINEERING...

EXPLAIN ABOUT DEFECT AMPLIFICATION AND REMOVAL IN SOFTWARE ENGINEERING

Implementation of system functionality, Methodology and system Functionalit...

Methodology and system Functionality: High level views of the proposed system in terms of the requirements that will be supported by the proposed system in the context of busine

Explain in detail about the software process, Explain in detail about the s...

Explain in detail about the software process. It is explained as the structured set of activities that are required to develop the software system. Fundamental activ

Define the behavioural model, Define the Behavioural Model It defines o...

Define the Behavioural Model It defines operational behaviour of the system.  In this model, numerous operations of the system are represented in pictorial form. Tools used to

What is grey box testing, Grey box testing is a software testing method tha...

Grey box testing is a software testing method that uses a combination of black box testing and white box testing. Gray box testing is not the black box testing, because the tester

Explain about the spiral model, Explain about the Spiral Model This mod...

Explain about the Spiral Model This model can be considered as the model that combines the strengths of various other models. Conventional software development processes don't

Explain code walkthrough, A manual testing [error detection] method where p...

A manual testing [error detection] method where program [source code] logic [structure] is traced manually [mentally] by a group with a small set of test cases, whereas the state o

What is control structure testing, Explain Control Structure Testing Ans...

Explain Control Structure Testing Ans) Due to basis path testing alone is insufficient, other methods should be utilized. Condition testing can be utilized to design test cas

What are the debugging programs, Q. What are the Debugging programs? De...

Q. What are the Debugging programs? Debugging programs:-A program which runs simultaneously with the program under test and provides commands to examine memory and registers st

What is risk assessment, What is Risk Assessment? Ans) A associated impa...

What is Risk Assessment? Ans) A associated impact and its comprehensive evaluation of the risk

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