CLAD Preparation exam/ Hardware Section/ Question n°7 How can that be possible ??

[Oussama_Zaidi]

Hi

I can't understand how the good anwser is C ??

I tested all the VIs and the only one which outputs values bigger than 4 is B. But in the preparation guide the awnser is C.

Can anyone explain to me why ??

Question in the picture below.

[crossrulz · Accepted solution]

"Which VI will only output all channels that have a value greater than 4 in them?"

A technically outputs all channels, just empty data for those with values less than 4.  The requirements imply that you should not output anything for those who do not have a value greater than 4.

B and D do not output waveforms (the datatype).  They just output arrays.

C is using a conditional terminal to output only the waveforms whose max value is greater than 4.  So C is obviously the answer.

Could you share your code so we can see if you did something wrong?  Or maybe you are confused about which letter goes to which answer (it has gotten me a few times with these exams)?

[Oussama_Zaidi]

Thank you for your help.

I didn't understand the question. Now it is clear for me. 

[walters5]

I created answer C in LabVIEW, however, the waveform still shows all data points. Shouldn't it only show values greater than 4? See my attached code (I have LabVIEW 2018).

[altenbach]

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@walters5 wrote:

I created answer C in LabVIEW, however, the waveform still shows all data points. Shouldn't it only show values greater than 4? See my attached code (I have LabVIEW 2018).

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No, it will retain all waveforms where at least one value is >4. All waveforms that match that conditions are fully retained.

[walters5]

I'm still a little confused.So, as long as one data point is >4 in a single channel, all of the data points in that channel will show on the graph?

[crossrulz]

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@walters5 wrote:

I'm still a little confused.So, as long as one data point is >4 in a single channel, all of the data points in that channel will show on the graph?

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That is correct.