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 continuous cmmi model, What is continuous CMMI MODEL? This is a...

What is continuous CMMI MODEL? This is a finer-grain model that considers individual or groups of practices and assesses their use. The maturity assessment is not a one valu

Explain error, A discrepancy among a computed, observed, or calculated valu...

A discrepancy among a computed, observed, or calculated value or condition and the true, specified, or theoretically correct value or condition; and

Describe the importance of function point, Q. Describe the Importance of fu...

Q. Describe the Importance of function point? - This is independent of the languages tools or else methodology used for implementation. - They are able to be estimated from

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

What is a software project test plan, What is a software project test plan?...

What is a software project test plan? A test plan is the master document that having all details pertaining to testing of the application. Its contents include: - Testing sc

CRT, EXPLAIN THE WORKING OF CRT?

EXPLAIN THE WORKING OF CRT?

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.

Neural network logo recognition, java/python based application which lets y...

java/python based application which lets you upload images of car logos and detects which logo it is by outputting the ID number of that image. Neural network is used to achieve th

Explain the instruction pipelines, Explain the Instruction pipelines In...

Explain the Instruction pipelines Instruction pipelines: - An instructin pipeline reads consecutive instructions from memory whereas previous instructions are being implemented

Define brooks law, Define Brooks law. Software was delivered late, was ...

Define Brooks law. Software was delivered late, was not reliable, cost various times the original estimates and often exhibited poor performance characteristics.

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