Certified LabVIEW Associate Developer (CLAD) Practice Test 2025 – Comprehensive All-in-One Guide to Exam Success!

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You are reading data from an NI 9205 module at 150kS/s using a DBL data type. How many bytes of data are transferred per second?

300 kB/s

1.5 MB/s

150 kB/s

1.2 MB/s

To determine the amount of data being transferred when reading from an NI 9205 module at a rate of 150kS/s with a Double Precision Floating-Point (DBL) data type, it's essential to understand both the sampling rate and the size of the data type.

The NI 9205 module is sampling data at a rate of 150,000 samples per second. Each sample, when represented as a DBL, occupies 8 bytes of memory (since a double-precision floating-point number typically requires 8 bytes).

To calculate the total data transferred per second, you multiply the sampling rate by the size of each sample in bytes:

150,000 samples/second * 8 bytes/sample = 1,200,000 bytes/second.

When converted to megabytes, this is 1.2 MB/s since 1 MB is equal to 1,000,000 bytes.

Thus, the total data transferred per second is indeed 1.2 MB/s, making that the correct answer. Understanding this calculation method demonstrates why accurate knowledge of sample rates and data sizes is crucial in data acquisition systems.

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