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

Determine the problems of software maintenance, Determine the problems of s...

Determine the problems of software maintenance Software maintenance has the below problems: i)  It is very cumbersome to analyse and understand code written by somebody.

State the both cardinality and modality, Define Cardinality & Modality. ...

Define Cardinality & Modality. Cardinality: Specification of the number of occurrences of one that can be correlated to number of occurrences of another. Modality: The Moda

Category Partition Testing and Data Flow Assignment, The following program ...

The following program will display an integral solution to the quadratic equation ax2+bx+c for integral values of a,b, and c, where a,c fall between 0 and 10, while b falls between

What is big-bang waterfall model, What is Big-bang waterfall model? Bi...

What is Big-bang waterfall model? Big bang Model of S/w development is based on the big bang theory. A huge quantity of people, money and time are put together, lot of energy

Explain the various phases of SDLC, Explain the Various phases of SDLC ...

Explain the Various phases of SDLC Various phases of SDLC are defined as below: Requirements Analysis Design Coding Software Testing Maintenance.

Design black box test suits for a function, Q. Design black box test suits ...

Q. Design black box test suits for a function that checks whether a character or string upto ten characters in a palindrome? Ans Following may be the test cases: - Try wit

Goals of quality control, Describe how the goals of quality control (QC) fl...

Describe how the goals of quality control (QC) flexible manufacturing systems (FMS), design for assembly (DFA)and low overall costs can be best combined by computer integrated manu

What is a user manual, What is A user manual? Ans) A "user manual" is a ...

What is A user manual? Ans) A "user manual" is a document that presents information essential to employ software or a system to get the desired results. Typically, what is expla

Distinguish among verification and validation, Distinguish between verifica...

Distinguish between verification and validation. Verification is the set of activities that ensure that software properly implements a specific function. Validation is a differ

Define product metrics, Normal 0 false false false EN-I...

Normal 0 false false false EN-IN X-NONE X-NONE MicrosoftInternetExplorer4

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