CWNP Exam CWDP-305 Topic 4 Question 6 Discussion

Actual exam question for CWNP's CWDP-305 exam

Question #: 6
Topic #: 4

What part of the 802.11n preamble is used by the receiver to estimate the spatially multiplexed signal channel? What mode is this used in?

Response:

AHT-STF in Greenfield mode only

BHT-LTF in Mixed and Greenfield modes

CHT-LTF in Greenfield mode only

DHT-STF in Mixed and Greenfield modes

Show Suggested Answer

Suggested Answer: B

by Antonette at Jun 16, 2025, 09:15 PM

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Ezekiel

5 days ago

Hmm, I was thinking it was HT-STF in both Mixed and Greenfield modes. Guess I need to review my 802.11n preamble structure again.

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Jules

13 days ago

I'm not sure, but I think it might be D) HT-STF in Mixed and Greenfield modes.

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Roosevelt

29 days ago

I agree with Ettie, because the receiver uses HT-LTF in Greenfield mode to estimate the spatially multiplexed signal channel.

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Ettie

1 months ago

I think the answer is C) HT-LTF in Greenfield mode only.

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Olen

1 months ago

I'm pretty sure it's HT-LTF in Mixed and Greenfield modes. Those long training fields are crucial for channel estimation, right?

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Mari

16 days ago

Definitely, HT-LTF in Mixed and Greenfield modes is crucial for the receiver to estimate the channel accurately.

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Louvenia

30 days ago

I think it's important to have those long training fields for accurate spatially multiplexed signal channel estimation.

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Roxane

1 months ago

Yes, you are correct. HT-LTF in Mixed and Greenfield modes is used for channel estimation.

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