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

State both verification and validation, Define Verification &Validation. ...

Define Verification &Validation. Verification : The set of actions that make sure software correctly implements a particular function. Validation : The set of actions that

Explain test plan, Documentation specifying the scope, approach, resources,...

Documentation specifying the scope, approach, resources, and schedule of intended testing activities. It signifies test items, the features to be tested, the testing tasks, respons

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 the static testing and dynamic testing, Static testing and dynamic ...

Static testing and dynamic testing Static testing is checking the application without actually running the application while dynamic testing checks the application by running i

Behavioral analysis model, Behavioral Analysis Model The Behavioral ...

Behavioral Analysis Model The Behavioral analysis is an operational technique for all requirement analysis techniques. When a sensor event is recognized the software invokes

Explain lines of code - software metrics, Q. Explain Lines of code - Softwa...

Q. Explain Lines of code - Software Metrics? Lines of code (LOC) is a software metric used to measure the size of a software program by counting the number of lines in the te

Script file, how to make script file volume of pyramid

how to make script file volume of pyramid

Relationship between people and effort, Ask question #Minimumreal time exam...

Ask question #Minimumreal time example 100 words accepted#

Different phases of spiral model, Four Different Phases of spiral model are...

Four Different Phases of spiral model are: 1) Planning  2) Risk analysis 3) Development 4) Assessment

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