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 do you understand by software crisis, Q. What do you understand by Sof...

Q. What do you understand by Software Crisis? Ans) Organizations are spending much larger portions of their budget on software. Not only are the software turning out to be more

Explain equivalence class partitioning, Q. Explain Equivalence Class Partit...

Q. Explain Equivalence Class Partitioning ? Equivalence Class Partitioning : It is a method in black box testing. It is designed to reduce the number of test cases by dividing

What do you mean by configuration management, Q. What do you mean by Config...

Q. What do you mean by Configuration Management? Because of several reasons software changes during its life cycle. Consequently of the change made multiple versions of the sof

Explain quality control, The operational methods and processes used to achi...

The operational methods and processes used to achieve quality requirements.

Illustrate function-oriented metrics, Q. Illustrate Function-oriented metri...

Q. Illustrate Function-oriented metrics? Function-oriented metrics: Function-oriented software metrics utilize a measure of the functionality delivered by an application as a

Illustrate partitioning in stepwise refinement, Q. Illustrate Partitioning ...

Q. Illustrate Partitioning in stepwise refinement? Problems are frequently too large and complex to be understood as a whole. Therefore we tend to partition such problems into

Explain fan in and fan-out, Fan in/Fan-out :- Fan-in is a measure of th...

Fan in/Fan-out :- Fan-in is a measure of the number of process or functions that call some other function or process (say X). Fan-out is the number of functions that are known

What is the disadvantage of the set protocol, Question: (a) What mecha...

Question: (a) What mechanism does illegal spammers exploit to send spam? (b) What is a hoax? (c) Name two ways in which you can increase the privacy of e-mail. (d)

Develop a clinic system - unified modeling language, You are to develop a C...

You are to develop a Clinic System . 1. Identify and briefly explain the objects, classes, methods and attributes for the Clinic System. 2. Draw a use case diagram to represe

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