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

SYSTEM ANALYSIS AND DESIGN, A program is to be developed to simulate the op...

A program is to be developed to simulate the operations of a scientific calculator. List the facilities to be provided by this calculator. Analyze this using a DFD 0 - level and 1

Define quality control, Explain Quality control This includes checking ...

Explain Quality control This includes checking the software development process to make sure that procedures and standards are being followed. There are two approaches to qu

Threads, what resources are used when a thread is created ?

what resources are used when a thread is created ?

What is a vertical microinstruction, What is a vertical microinstruction? ...

What is a vertical microinstruction? Ans) A vertical microinstruction is a microinstruction that states one of a sequence of operations required to carry out a machine language

Driven development, what is driven development?give example what benifit of...

what is driven development?give example what benifit of driven development

What is software life cycle, Software life cycle starts when a software pro...

Software life cycle starts when a software product is first conceived and ends when it is no longer in use. It contains aspects such as initial concept, requirements analysis, inte

What is the meaning of system engineering, What is the meaning of System En...

What is the meaning of System Engineering? System Engineering means designing, deploying, implementing and operating systems which include hardware, software and user.

Discuss the problems faced during software maintenance, Q. Discuss the prob...

Q. Discuss the problems faced during software maintenance? The most significant problem during maintenance is that before correcting or else modifying a program the programmer

Offshore oil industry, as software project manager in company specialized o...

as software project manager in company specialized on offshore oil industry have been tasked to discover factors affecting mantainability of the system developed by the company.wh

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