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

Define the system requirements, What is meant by System Requirements? ...

What is meant by System Requirements? Place the system services and constraints in detail. Serves as a link between the system purchaser & the system developer.

Hotel reservation, how to make pseudo code of hotel reservation

how to make pseudo code of hotel reservation

Time line chart, what is time line chart for travel management?

what is time line chart for travel management?

Explain different type of testing tools, Q. Explain different type of testi...

Q. Explain different type of testing tools? (a) Test Case Generators: These tools produce test cases from SRS program or test design languages. They utilize certain rules cal

Explain in detail about functional modelling, Explain in detail about Funct...

Explain in detail about Functional Modelling. This model explains the computations that take place within a system. This model is useful when the transformation from t

What are the various kinds of system testing, What are the various types of...

What are the various types of system testing? 1. Recovery testing - is intended to check the system's capability to recover from failures. 2. Security testing - verifies tha

Illustrate the features of function count, Q. Illustrate the Features of fu...

Q. Illustrate the Features of function count? Features:- Function point goes forward is independent of the language tools or methodologies used for implementation.

Compare the productivity and difficulty, Q. Compare the Productivity and di...

Q. Compare the Productivity and difficulty? Productivity refers to metrics as well as measures of output from production processes per unit of input. Productivity P perhaps c

Explain the term- silktest host and silktest project, Explain the term- Sil...

Explain the term- SilkTest Host and  SilkTest Project SilkTest Host - SilkTest component which manages and executes test scripts. It generally runs on a machine different t

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