Free CLAD (NI) Questions and Answers

Question 1

How do you document a VI so that the summary shows up in the pop-up box for Show Context Help?

Accepted Answer

Use the VI Properties Documentation window

Answer

Documentation typed into the VI Properties Documentation window is exactly what LabVIEW shows in the Context Help pop-up for that VI. A front-panel free label stays on the panel, editing LabVIEW's help files changes the application's manuals, and the Context Help window only displays text rather than accepting input.

Question 2

Can data be sent over a wire between parallel-running loops?

Accepted Answer

NO

Answer

No—under LabVIEW's dataflow model a wire imposes execution order between its endpoints, but parallel loops have no shared data-dependency, so you cannot simply wire data from one into the other. Passing data between independently running loops requires constructs such as queues, notifiers, or variables.

Question 3

Of the following, which best characterizes a Tab Control?

Accepted Answer

A type of enumerated control

Answer

A Tab Control is essentially an enumerated control—each tab maps to an integer value, the same way an enum's items do, and the control returns that value for the selected tab. The other options (ASCII output, cluster output, or tab-order output) do not describe how a Tab Control represents its data.

Question 4

What benefit does utilizing a Strictly Typed VI refnum offer?

Accepted Answer

The data types of the target VI are known at compile time

Answer

A Strictly Typed VI refnum locks in the connector-pane data types of the target VI, so those types are known at compile time, enabling compile-time type checking and safe Call By Reference. A weakly (non-strictly) typed refnum is what allows types to vary; strict typing does the opposite, and it has nothing to do with preloading VIs or flattening data to strings.

Question 5

A coercion dot signifies:

Accepted Answer

A data buffer is created to handle data conversion

Answer

A coercion dot marks an automatic data-type conversion, and LabVIEW creates a buffer to store the converted copy of the value at that point. It does not indicate out-of-range values, matching/consistent types, or a polymorphic operation.

CLAD Practice Test

CLAD Practice Test

Free CLAD (NI) Questions and Answers