MDA 1

You must include the option to cancel when a user attempts to interactively close the front panel by selecting File>>Close. Which Event case allows this functionality?

You must generate code that responds to multiple value change events using a Boolean control while maintaining a latching mechanical action. Which programming step is NOT required?

Including or reading the Boolean control terminal in a loop

Including the Event Structure within a loop

Configuring a Timeout case within the Event Structure

Configuring a Value Change event case for the Boolean control

Which of the following statements is TRUE about the following code segment?

The loop will execute once and the indicator Iteration will have a value of one

The loop will execute once and the indicator Iteration will have a value of zero

The loop will execute continuously and the program will have to be aborted

The loop will not execute and the indicator Iteration will have a value of zero

Why is a shift register used for the file refnum input on the For Loop?

If the Values to Write to File array is empty, the For Loop will run zero times, but the refnum value will be passed through to the shift register output

The Write to Text File function modifies the value of the refnum on each For Loop iteration

It is the only way to prevent the For Loop from building an array at the refnum output terminal

No reason. A regular tunnel would provide identical functionality to the shift register

The following SubVI is loaded into memory and then run. At some later time it is still in memory and is run a second time. What is the value is displayed in the Sum indicator when the SubVI completes execution the second time it is run?

There is no way to know :P

Which of the following is FALSE about File I/O using binary or TDMS file formats?

Binary files can accept any LabVIEW data type

TDMS can accept any LabVIEW data type

TDMS is generally faster in writing than binary

Binary file I/O can be used by all versions of LabVIEW

How does a producer consumer design pattern process excessive amounts of data?

Using a single element queue the Producer Consumer processes only current data

Using a queue for storage the Consumer loop processes all data when it has time.

The Producer loop will slow its cycle time to allow the consumer loop to catch up.

The consumer loop will increase its processing time to match the producer loop.

Unlike graphs, which display an entire waveform that ________ the data already displayed, charts update periodically and __________ the data previously displayed.

Maintains a history of; overwrite

Overwrites; maintain a history of

Appends to; overwrite

None of the above

After the VI starts running, the user clicks the "Event1" button twice. The event structure has no other event cases. What will be displayed in the "Time 1" indicator when the VI stops executing?

Undetermined

You have written a LabVIEW VI with three parallel code paths. All three error cluster wires are wired into a Merge Errors function. What error is reported to the user?

Error 1014, because Merge Errors outputs the first error to occur chronologically

Error 7, because Merge Errors outputs the first error wired in to it from the top down

Error 1, because Merge Errors outputs the most significant error of the errors wired in to it

All three errors are reported, because Merge Errors concatenates the errors into a single error message to display to the user

Which timing function can result in logic errors when it rolls over to zero?

Wait until next ms multiple

Tick count

Get date/time in seconds

Wait (ms)

Which of the following statements is NOT valid?

You can make a Cluster of Clusters

You can make an Array of Arrays

You can make a Cluster of Arrays

You can make an Array of Clusters

Which of the following cannot be used to transfer data between two parallel loops?

Wires

Queues

Notifiers

Local variables

The time out input terminal of the Dequeue Element function is wired with the value 1. While the VI is running, how long does this Dequeue Element function wait to receive data?

1 milisecond

1 second

Indefinitely

It does not wait. It returns immediately

What does this function do?

Transfers the queue reference to other callers

Sorts all queue elements in order and returns them as an array

Clears all elements from the queue

Removes one reference to the queue and returns any remaining elements

When a VI is paused, clicking on the _________ button allows you to bypass a node in the Block Diagram without single-stepping through the node

Step into

Step over

Step out

Step through

Which data type is not accepted by the case selector terminal on a case structure?

Arrays

Enumerated type values

Strings

Integers

Which statement about sequence structures is FALSE?

Sequence structures support parallel operations within frames

Terminating the execution of a sequence structure before the entire sequence is completed is not possible without aborting.

Sequence structures execute frames in a sequential order.

Sequence structures stop when an error is detected

Which equation is equivalent to the code?

Sqrt(a*((a+b)^2-(c-1)))

Sqrt(a*((c-1)-(a+b)^2))

Sqrt(a*((a+b^2)-(c-1))

Sqrt(a^2*((a+b)^2-(c-1)))

When clicking a broken run arrow, the Error list window shows all of the following EXCEPT:

Items with errors

Errors and warnings

Details about the warnings

Error Codes

How do you document a VI so that the description appears in the Show Context Help popup window?

Use the VI Properties Documentation window

Type in the Show Context Help window

Create a free label on the front panel

Edit the LabVIEW help files

What do coercion dots indicate?

Incompatible data types

A mathematical operation will be performed on the data

The input data will be copied and converted to a different data type

The location where an error will occur

What settings should be selected for a custom control so that all copies of the control are of the same data type yet have the flexibility to use different colors and styles?

Control

Type Def

Strict Type Def.

Flex Def

In a Simple State Machine design pattern, which of the following stores the state information?

Shift Register

Queue

Notifier

Functional global variable

You are required to use the Get Date/Time in Seconds function for timing in a state machine. The state machine has an acquire state and must acquire for 5 seconds. If the hardware fails during acquisition the state machine must be able to transition to the stop state. Which of the following design patterns will provide timing for a state machine and allow responsiveness to acquire state requirements?

Which of the following apply to Property Nodes?

Allow attributes of files on disk to be programmatically manipulated

Can be used to update the value of a front panel control or indicator

Return an error if you attempt to read a property before it has been written

Can be used to invoke methods on a control

You have a front panel control on a top-level VI that you must manipulate from within a SubVI. Which of the following could you pass to the SubVI to accomplish this?

The control's properties

The control's methods

The control's reference

The control's data type

Which Property Node can change the text color attributes of ANY digital numeric control used on the panel of a VI?

Which of the following user interface events will allow your code to respond before LabVIEW performs the default action associated with that event?

Mouse Down

Panel Resize

Panel Close

Value Change

The Trigger control is configured with a switching mechanical action. The VI's requirement is to display a Count value that tracks the number of "value change" events, for changes to TRUE, that occur for the Trigger. Which of the code snippets meets that requirement when the VI is run?

Which of the following statements is TRUE regarding the execution of the following code? The loop will iterate:

51 times

50 times

49 times

A random number of times

The VI is open and run twice without being closed or modified. What value is displayed in the Value Out indicator after the second execution of the VI?

What value is displayed in the Numeric indicator after the VI executes?

The While Loop iterates indefinitely

What value will be displayed in the Out indicator when this VI completes execution?

Case 0

Case 1

Case 2

Case 3

The Wait function can be added to While Loops

To free up available memory

To allocate memory used by the CPU

To allow the processor time to complete other tasks

To reserve which processor the code is running on

While the VI executes, the user presses and then releases Boolean Control with Switch Until Released mechanical action. The starting value of Boolean Control is FALSE, What value is displayed in the Result indicator after execution?

Why does an error occur when the code executes?

File path not wired to the input of the Open/Create/Replace File function

File opened with the incorrect access

File reference not closed

File data type is incorrect

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