[Year 12 SofDev] VITTA sample exam 1

[Mark]

Yes, validation can only check for reasonableness (range, type, existence)
and not accuracy.
It's an annoying slip that tends to recur in exams - even VCAA was not
immune in the 2007 ITA paper, question A9...

Validation is used to
A. check the accuracy of calculations.
B. detect software errors and alert the manager.
C. test functions and alert programmers to errors.
D. prevent inaccurate data from entering the system.

The official answer was D even though the study design's description of the
PSM (p.17) clearly states that Development involves "Validation to check
for the reasonableness of data being input."


On 7 October 2013 10:21, Travis Parker <Travis.Parker at beaconhills.vic.edu.au
> wrote:

>  Hi All,****
>
> ** **
>
> Welcome back from the break!****
>
> ** **
>
> I am just going through the sample exam 1 2013 from VITTA that my students
> completed over the holidays. Question 12 of multi choice gives two
> interfaces and then a range of answers. The correct answer says that the
> second interface (That makes use of dropdown boxes) ensures *accurate*input of data. All year I have taught that validation methods such as this
> ensure *reasonable* input of data as even with a limited amount of
> choices it still isn’t necessarily accurate. I seem to remember past exam
> questions on this as well.****
>
> ** **
>
> Is this the case, or am I ok in teaching that dropdown lists ensure
> reasonable entry of data?****
>
> ** **
>
> Cheers****
>
> ** **
>
> Trav****
>
> **
>
> **
>
> *Travis Parker **
> **Head of ICT**
> **Ph: (03) 5945 3016*
>
> *
> *[image: Email_Pakenham.jpg]****
>
> ** **
>

--
Mark Kelly
mark AT vceit DOT com
http://vceit.com

Day 19, I have successfully conditioned my master to smile and write in his
book every time I drool.- Pavlov's Dog
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