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 does data abstraction contains, What does Data abstraction contains? ...

What does Data abstraction contains? A Data abstraction is a named collection of data that defines a data object Eg: door Attributes: door type, Opening mechanism, Swing di

What is embedded system partitioning, Question : (a) What is embedded s...

Question : (a) What is embedded system partitioning? What is decided during partitioning? (b) What is the difference between structural and functional partitioning? Which on

Define data objects and relationship, Define Data objects, attributes & rel...

Define Data objects, attributes & relationship. Data object: Representation of any collective  information that must be understood by software. It can be any external entity.

Find the degree of capability of software reliability model, Q. Define capa...

Q. Define capability. What are the quantities that determine the degree of capability of a software reliability model? Ans: Capability demotes to the ability of the model to

Draw an entity-relationship model, (a) Draw an Entity-Relationship model f...

(a) Draw an Entity-Relationship model for the relational schema given in the Appendix. Show all the entities, relationships, relationship names, and attributes and also underline

Define quality control, Explain Quality control This includes checking ...

Explain Quality control This includes checking the software development process to make sure that procedures and standards are being followed. There are two approaches to qu

Explain the regression testing, What is regression testing? Regression...

What is regression testing? Regression testing is the re-execution of some subject texts that have previously been conducted to make sure that changes have not propagated unin

Data Dictionary, The University needs to develop an online student registra...

The University needs to develop an online student registration system for new CAO entrants. This system will allow new students to enroll in their university course. Each student i

DFD AND DATA DICTIONARY, Hoosier Burger''s food ordering system dfd and dat...

Hoosier Burger''s food ordering system dfd and data dictionary

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