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

How will you convince the ceo that crm will make improvement, Marketing and...

Marketing and Sales (M/S) is the focal point of many of Hawkins Cookers Ltd, because they are responsible for selling the company's product (a) Consider you are the Chief Inform

High level architecture, Devise an architecture for a system that manages t...

Devise an architecture for a system that manages the daily operation of a motor vehicle service and repair business. The system will have the following functionality:- Administrati

what is random testing, What is Random Testing? This is one of process...

What is Random Testing? This is one of process used to exercise a class. It is based on developing a random test series that tries the minimum number of operations typical to th

Explain bottom-up integration, Bottom-up integration This testing start...

Bottom-up integration This testing starts construction and testing with the components at the lowest levels in the program structure.

What are the tools mainly used for information gathering, What are the tool...

What are the tools are mainly used for information gathering 1.  Record review: A review of recorded documents of organisation is performed.Manuals procedures, forms and book

Describe any 4 characteristics of distributed systems, QUESTION - Character...

QUESTION - Characteristics of DSs (a) List and describe any 4 characteristics of distributed systems. (b) State the criterion for a system to be considered as not a distrib

What do you understand by user-centred design, Problem: (a) What do yo...

Problem: (a) What do you understand by user-centred design and why is it important? (b) Explain how Prototyping and the Participatory Design approach are useful to the d

What condition exists after performing validation testing, What are the con...

What are the conditions exists after performing validation testing? After performing the validation testing there two situations arise. The function or performance characterist

Enhance the effectiveness of visual support, Question: a) Discuss which...

Question: a) Discuss which communication method/s you would use in the following situations. Justify your answer. i. Congratulating an employee on obtaining a promotion.

Explain about communicational cohesion, Q. Explain about Communicational co...

Q. Explain about Communicational cohesion? Communicational cohesion: The Communicational cohesion is when parts of a module are grouped for the reason that they operate on th

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