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 upwardly compatible software, "Upwardly compatible software" is sof...

"Upwardly compatible software" is software that is compatible with a later or more difficult version of itself. For example, an upwardly compatible software is able to occur files

What is constructive cost model, Q. What is Constructive Cost Model? CO...

Q. What is Constructive Cost Model? COCOMO model denotes Constructive Cost Model. It is an empirical model basis on project experience. It is well-documented and independent mo

What is cardinality in data modeling, What is cardinality in data modeling?...

What is cardinality in data modeling? Cardinality in data modeling, cardinality specifies how the number of occurrences of single object is related to the number of occurrences

Explain the working of gantt charts, Explain the working of Gantt charts ...

Explain the working of Gantt charts -  Gantt charts enable emailing of project/tasks info to others automatically -  Gantt charts allow use of intranet/email facility to down

Illustrate about the software process technology, Illustrate about the  SO...

Illustrate about the  SOFTWARE PROCESS TECHNOLOGY   Software industry considers software development like a process. According to Rumbaugh and Booch, "A process defines who is

What are the testing strategies for conventional software, What are the var...

What are the various testing strategies for conventional software? i. Unit testing ii. Validation testing. iii. Integration testing. iv. System testing.

30 60 90 TRIANGLES, Find the length of the hypotenuse. With a short side of...

Find the length of the hypotenuse. With a short side of radical 3 and a long side with 3 radical 2 Simplify the radical if you can.

Explain test harness systems and test archiving systems, Q. Explain Test ha...

Q. Explain Test harness systems and Test archiving systems? Test harness systems: This is one that is bound around the test object and that permits the easy modification a

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