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CWDP-305 · Question #287

While using a USB adapter attached to a USB hub and your laptop for protocol analysts you notice that the SNR is lower than expected. The USB adapter is an 802 11 ac 3x3 3 adapter and is connected…

The correct answer is B. USB 3 0 interference. See the full explanation below for the reasoning.

Question

While using a USB adapter attached to a USB hub and your laptop for protocol analysts you notice that the SNR is lower than expected. The USB adapter is an 802 11 ac 3x3 3 adapter and is connected to a USB 3 hub. What is likely causing the SNR variation?

Options

  • AUSB 20 interference
  • BUSB 3 0 interference
  • CEMI from the battery in the device
  • DRF incidental energy generated by the cooling fans in the laptop

How the community answered

(23 responses)
  • A
    4% (1)
  • B
    74% (17)
  • C
    13% (3)
  • D
    9% (2)

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