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

What is function point, What is function point? Function point is the s...

What is function point? Function point is the size of measure it is also used to calculate approximately the software cost. Function point (FP)=Function Count (FC) * Value a

Dfd, explain dfd

explain dfd

Need help with my program deadline is tomoroow , I have a vb.net applicatio...

I have a vb.net application i would like to add database function + coding the the function to let the application work and also to add a login window for the customers + custom

What is a technical analyst, What is A Technical Analyst? Ans) Technical...

What is A Technical Analyst? Ans) Technical Analysts perform test assessments and validate system/functional test needs. Depending on the project, single person might wear more

Simulate the operations of a scientific calculator, Q. A program is to be d...

Q. 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 DFD? Level 0

What is reverse engineering, What is reverse engineering?    It is a pr...

What is reverse engineering?    It is a process of examining software with a view to understanding its design and specification. -  In reverse engineering, source code and i

Software methodology, how to choose a software methodology for a software p...

how to choose a software methodology for a software project

Online bakery-equipments ordering system, Question: Draw a class diagra...

Question: Draw a class diagram which represents the information handled by the Online Bakery-equipments Ordering System. Your class should briefly and simply reflect the relat

What is the use of user interface prototyping, What is the use of User Inte...

What is the use of User Interface prototyping? This prototyping is used to pre-specify the look and feel of user interface in an effective way.

Differentiate between iso and cmm, Q. Differentiate between ISO and CMM? ...

Q. Differentiate between ISO and CMM? Ans) The difference between CMM and ISO are as follows :- - ISO 9000 is awarded by an international standards body. Thus, ISO 9000 cert

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