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

Expert Systems, Explain model-based expert systems and frame-based expert s...

Explain model-based expert systems and frame-based expert systems

State the software measure, What is software measure? A software measu...

What is software measure? A software measure is a mapping from a set of objects in the software engineering world information a set of mathematical construct like numbers or v

Explain object oriented software development, Question: (a) Briefly ex...

Question: (a) Briefly explain the following concepts: (i) Encapsulation and its advantages (ii) Abstract class and its use (iii) Polymorphism and its advantages (b)

Determine about the bottlenecks of performance testing, What kinds of bottl...

What kinds of bottlenecks can be expected in performance testing? Bottlenecks in performance testing can have below effects: - It can affect the performance and the scalabil

How to compute the cyclomatic complexity, How to compute the cyclomatic com...

How to compute the cyclomatic complexity? The cyclomatic complexity can be computed by any one of the following ways. 1. The numbers of regions of the flow graph correspond

State about the normal data - Test data, State about the Normal data- Test...

State about the Normal data- Test data -  This is data which is valid/acceptable and has expected outcomes (for instance, if a date is being input the day must be in the rang

Define the associative memory, Associative Memory:- The time needed to ...

Associative Memory:- The time needed to find an item stored in memory can be decreased considerably if stored data can be identified for access by the content of the data itsel

Explain in detail about integration testing, Explain in detail about Integr...

Explain in detail about Integration testing. It is a systematic method for constructing the program structure. Incremental integration - The program is constructed and

What is execution, What is Execution Ans) The process of a computer gett...

What is Execution Ans) The process of a computer getting out an instruction or instructions of a computer. Exhaustive Testing: Implementing the program with all possible combina

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