CWNP CWISA-102 Exam - Topic 5 Question 20 Discussion

Actual exam question for CWNP's CWISA-102 exam

Question #: 20
Topic #: 5

[All CWISA-102 Questions]

What factor severely limits the range of systems operating in the 60GHz band?

AAtmospheric Scattering

BSolar Radiation

CRain Fade

DOxygen Fade

Show Suggested Answer

Suggested Answer: D

60GHz Absorption:The 60GHz band experiences significant signal attenuation due to absorption by oxygen molecules in the atmosphere. This severely restricts the usable range of wireless systems operating in this frequency.

Why Other Options Don't Apply:

Atmospheric Scattering:Impacts longer wavelength transmissions, less significant at 60GHz.

Solar Radiation:Can cause interference on some frequencies, but not a primary range limitation at 60GHz.

Rain Fade:Primarily affects higher frequencies (above 10GHz), but its impact is less severe than oxygen absorption at 60GHz.

References:

60GHz Propagation Characteristics:Technical papers discussing oxygen absorption and its influence on range limitations.

Millimeter-wave (mmWave) Communication:Overviews highlighting the challenges and short-range applications of 60GHz systems.

by Muriel at Sep 14, 2024, 02:43 AM

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Michel

3 months ago

Atmospheric Scattering is also a factor, but not the main one.

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Merlyn

3 months ago

Wait, is Oxygen Fade really that significant? Sounds odd.

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Elliott

3 months ago

Yeah, I've read that too, but Oxygen Fade is a big deal.

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Diane

4 months ago

I thought it was mostly Rain Fade!

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Brianne

4 months ago

It's definitely Oxygen Fade that limits the range.

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Noelia

4 months ago

I have a vague memory of solar radiation being discussed, but it seems less likely compared to oxygen fade.

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Craig

4 months ago

I practiced a question similar to this, and I think rain fade was one of the options. But I don't recall if it was the main limiting factor.

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Regenia

4 months ago

I remember studying about the 60GHz band, and I feel like oxygen fade was mentioned as a significant factor.

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Soledad

5 months ago

I think the answer might be related to atmospheric effects, but I'm not entirely sure if it's scattering or something else.

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Shanice

5 months ago

I'm pretty confident the answer is C - rain fade. The 60GHz band is susceptible to attenuation from water vapor in the atmosphere.

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Leanora

5 months ago

I'm a bit confused on this one. Is it something to do with the absorption of the signal by atmospheric gases?

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Tamie

5 months ago

Okay, let's see. I know atmospheric scattering can be an issue at higher frequencies, so that's my first guess.

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Lashunda

5 months ago

Hmm, this one seems tricky. I'll need to think carefully about the factors that can limit the range of systems in the 60GHz band.

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Tayna

5 months ago

Ah, good point. The oxygen absorption in the 60GHz band is probably the key factor limiting the range here.

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Isabelle

5 months ago

I think the safest approach would be to redeploy VM1 and VM2 to the same availability set. That way, we can ensure they are properly load-balanced and highly available.

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Bobbye

1 year ago

Hey, at least it's not B) Solar Radiation. Can you imagine trying to get a 60GHz link to work during a solar flare? That's like trying to text during a lightning storm.

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Izetta

1 year ago

I'm going with C) Rain Fade. Gotta love how 60GHz signals are more sensitive to water than a cat to a bath.

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Alecia

1 year ago

A) Atmospheric Scattering, for sure. Those 60GHz signals are about as directional as a fire hose. Good luck hitting your target!

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Elinore

1 year ago

D) Oxygen Fade, no doubt. I heard it's like running a Wi-Fi network inside a giant oxygen tank. Challenging stuff.

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Idella

1 year ago

B) Solar Radiation can also cause interference in the 60GHz band.

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Ernest

1 year ago

D) Oxygen Fade is definitely a major limitation in this band.

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Brendan

1 year ago

C) Rain Fade is another factor to consider when dealing with 60GHz systems.

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Lettie

1 year ago

A) Atmospheric Scattering can also have a big impact on the range.

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Shawnda

1 year ago

Definitely C) Rain Fade. I've seen those 60GHz links get wiped out by a light drizzle.

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Staci

1 year ago

Oxygen fade? More like oxygen overload. That's what I'll be if I have to study one more obscure wireless topic for this exam.

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Lashunda

1 year ago

Solar radiation? Really? I thought that was more of an issue for satellite communications, not terrestrial systems. This exam is testing some weird stuff.

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