04-06-2016 05:48 PM
The following question I found on the recent (least I think it's recent) CLAD sample exams. I got this one wrong. I answered it as D because of a key word, "Invoke." The answer is apparently B. This is my question to you, LabVIEW world, how is the answer B? I have changed values of controls and indicators using value of a property node before. I even went straight to a Block Diagram and tried wiring to both a control and an indicator property node value without any issue. Is this question wrong?
Q38: Which of the following apply to Property Nodes?
Property Nodes:
A allow attributes of files on disk to be programmatically manipulated
B can be used to update the value of a front panel control or indicator
C return an error if you attempt to read a property before it has been written
D can be used to invoke methods on a control
04-06-2016 05:50 PM - edited 04-06-2016 05:52 PM
Invoke nodes are used to invoke methods, which are different than property nodes. That rules out D.
Did you read the question correctly? It seems like you are familiar with the use of property nodes (saying how you went to the block diagram).
04-06-2016 05:51 PM
You are confusing invoke nodes (methods) with property nodes (properties).
04-06-2016 06:08 PM
I'm leaning to the first post being right and you misread it.
You state you've used property nodes to change the value. You stated you went to test it and saw you can change the value with the property nodes. That means "which of the following apply to property nodes" would HAVE to include what you know to be true and tested to be true. D is discusing invoke nodes that invoke methods rather than change properties. The answer is easily correct.
04-06-2016 06:27 PM
Oh... Good grief. I have been misreading and re-misreading this question over and over. That's embarassing. My bad. My bad.
04-06-2016 08:18 PM
@DailyDose wrote:Oh... Good grief. I have been misreading and re-misreading this question over and over. That's embarassing. My bad. My bad.
Trust me. We've all done it. Learn what you can and move on.