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HPE3-U01 Exam - Topic 4 Question 70 Discussion

Actual exam question for HP's HPE3-U01 exam

Question #: 70
Topic #: 4

[All HPE3-U01 Questions]

Which condition allows 5Ghz channels to avoid Adjacent Channel Interference?

Atransmit at 40 MHz bandwidth

Btransmit at high power levels

Ctransmit at low power levels

Dtransmit at 20 MHz bandwidth

Show Suggested Answer

Suggested Answer: A

by Pamela at Jan 05, 2026, 05:16 AM

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Francoise

2 months ago

A might cause more interference. D is safer for 5GHz.

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Rosendo

2 months ago

But what about A? 40 MHz could work too.

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Ilona

3 months ago

Agreed! Less overlap with adjacent channels.

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Myra

3 months ago

I think D is the best choice. 20 MHz bandwidth reduces interference.

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Deeanna

3 months ago

40 MHz might actually cause more interference, right?

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Carlee

3 months ago

I thought high power levels would help, but I guess not!

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Nguyet

3 months ago

Wait, are we sure about that? Seems too simple.

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Lorrine

3 months ago

Totally agree, 20 MHz helps avoid interference.

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Rolande

4 months ago

D) transmit at 20 MHz bandwidth is correct!

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Buddy

4 months ago

D) all the way. 20 MHz is the sweet spot to avoid that pesky adjacent channel mess.

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Sheron

4 months ago

Haha, B) transmit at high power levels? Yeah, that'll really help with the interference. Not!

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Phillip

5 months ago

C) transmit at low power levels is also a good option. Less power means less spillover to adjacent channels.

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Princess

5 months ago

Definitely D. Wider channels mean more overlap and interference. Gotta keep it tight at 20 MHz.

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Loise

5 months ago

D) transmit at 20 MHz bandwidth is the correct answer. 5GHz channels have less interference at narrower bandwidths.

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Jamika

5 months ago

I'm uncertain, but I think transmitting at lower power levels might not help with adjacent channel interference, so I would lean towards D as well.

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Cheryll

5 months ago

I vaguely recall a practice question about 5GHz channels, and I think 20 MHz was mentioned as a way to avoid interference.

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Denny

5 months ago

I feel like we discussed how lower bandwidth can reduce adjacent channel interference, so maybe it's D?

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Elza

6 months ago

I think I remember something about bandwidth affecting interference, but I'm not sure if it's 20 MHz or 40 MHz that helps.

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Marshall

6 months ago

Alright, I got this. The 20 MHz bandwidth is the key to avoiding adjacent channel interference on 5GHz. The lower bandwidth helps keep the signals more contained and reduces overlap between channels. Feeling good about this one.

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Yuki

6 months ago

Ugh, I'm drawing a blank on the specifics of 5GHz channels. Let me think this through step-by-step. Bandwidth, power levels... Hmm, I'll have to make an educated guess on this.

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Yolande

6 months ago

Ah, I remember learning about this in class. I'm pretty sure the 20 MHz bandwidth is the right answer, since it helps reduce interference between adjacent channels. Feels confident about this one.

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Earnestine

6 months ago

Okay, I'm a bit confused on this one. Is it something to do with the power levels? I'm not super familiar with 5GHz channels, so I'll have to think this through.

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Zachary

7 months ago

Hmm, I think the key here is to look at the different channel widths. I'm guessing the 20 MHz bandwidth might help avoid interference, but I'm not totally sure.

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Twana

10 days ago

Low power levels could also help, right?

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Gwenn

16 days ago

But what about 40 MHz? It might cause more overlap.

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Samira

2 months ago

I agree, 20 MHz could reduce interference.

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