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

Data dictionary, What is data dictionary entry explain

What is data dictionary entry explain

Difference between restructuring and forward engineering, Problem 1. Ex...

Problem 1. Explain why the use of a standard high-level language does not guarantee that software will be portable across a range of machines 2. Draw possible data flow diag

What is the purpose of symbol table, Problem 1 . What is the purpose of Sym...

Problem 1 . What is the purpose of Symbol Table? Write a brief note on various Data structures used in implementing Symbol Tables Stating Purpose Writing note on various D

Differentiate between application and system software, Question: (a) Di...

Question: (a) Differentiate between application software and system software. (b) Mr. Smith would like to know which type of computer is more appropriate to process the inf

What is oo integration testing, This strategy includes testing the classes ...

This strategy includes testing the classes as they are integrated into the system. The traditional approach would test every operation separately as they are executed into a class.

Discuss in detail about cocomo model, Discuss in detail about COCOMO model....

Discuss in detail about COCOMO model. Constructive Cost Model. Software cost estimation gives the opportunity to estimate of how much months a man take to develop a softw

State the term- code coverage, State the term- Code Coverage This is a...

State the term- Code Coverage This is an analysis method that determines which parts of software have already been covered by test case suite and which are remaining.

What are basic key process areas in cmm, Q. What are basic Key process area...

Q. What are basic Key process areas in CMM? Ans) Key Process Areas (KPAs) adds the areas an organization could focus to improve its software process to the next level. Except f

Write Your Message!

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