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

Mention some of the drawbacks of rad model, Mention some of the drawbacks o...

Mention some of the drawbacks of RAD model. Not suitable for largescale projects. Commitment of developers & customers are required. Not appropriate when technical ris

State the term software is engineered, Justify the term "Software is engine...

Justify the term "Software is engineered" Software is engineered not manufactured. Although some similarities exist between software development and hardware manufacture, the t

Determine about software review, Determine about Software Review - This...

Determine about Software Review - This is an evaluation method that includes the bringing together a group of technical personnel to examine a software artifact in order to imp

State entity and relationship diagram, State Entity /Relationship diagram. ...

State Entity /Relationship diagram. ERD depicts relationships among data objects. The ERD is the notation that is used to conduct the data modeling activity. The primary

What is brainstorming, A group process for generating original and diverse ...

A group process for generating original and diverse ideas.

Data Flow Diagram, I need help creating a DFD for an assignment. Is there a...

I need help creating a DFD for an assignment. Is there anyway you could help?

State the system engineering hierarchy, State the System Engineering Hierar...

State the System Engineering Hierarchy The world view is made up  of a set of domains (Di),which can either be a system or a system of systems. WV = {D1,D2,D3,...........,Dn

Explain storage testing, This is a explanation of whether or not certain pr...

This is a explanation of whether or not certain processing conditions use many storage [memory] than estimated.

Explain cocomo model with its applicable equations, Q. Explain COCOMO model...

Q. Explain COCOMO model with its applicable equations. Describe various attributes of cost drivers used in COCOMO model. Ans. COCOMO denotes for constructive cost model -

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