HPE7-A07 Exam - Topic 3 Question 25 Discussion

Actual exam question for HP's HPE7-A07 exam

Question #: 25
Topic #: 3

An ACME company employee complained about a recent poor-quality VoIP call while moving around their office environment HPE Aruba Networking Central reported a fair UCC score for this call while your VoIP engineer reported that their systems reported a MOS of 2, 3. The VoIP devices are operating over the 5GHz frequency band.

What are the possible contributing factors? (Select two.)

ACoverage AP deployment plans generally don't support enough cell overlap for VoIP.

B802.tr is enabled in the WLAN Security settings.

CThere was localized interference at the caller's location

D802.1K is disabled in the WLAN Security settings

EThe client roamed into an area that continuously operates Zigbee.

Show Suggested Answer

Suggested Answer: A

USB dongles often require additional power, which may exceed the power delivery capabilities of Class 4 PoE switches. Aruba AP-615 and AP-635 are designed to work with USB dongles that require additional power for proper operation. Since the Cat 6A cable can support higher power levels, replacing the Class 4 PoE switches with Class 6 PoE switches, which can deliver higher power, should resolve the issue with the dongles not powering up.

by Azzie at Oct 19, 2024, 05:06 AM

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Yolande

3 months ago

Zigbee interference? That's surprising!

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Kanisha

3 months ago

Wait, 802.tr in WLAN settings? Is that really a problem?

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Denny

3 months ago

Coverage overlap is crucial for good calls, too!

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Elliott

4 months ago

I agree, localized interference makes sense.

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Bobbye

4 months ago

Sounds like interference could be a big issue here.

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Eulah

4 months ago

I recall that 802.1K is related to network security, but I'm not sure how it would impact VoIP calls directly.

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Georgiana

4 months ago

I practiced a similar question about roaming issues, and I think E could be relevant if the client moved into a Zigbee area.

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Krissy

4 months ago

I'm not entirely sure, but I think localized interference could definitely affect call quality, so C seems likely too.

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Christoper

5 months ago

I remember we discussed how coverage and cell overlap are crucial for VoIP quality, so I think A might be a factor.

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Casey

5 months ago

This seems like a good opportunity to apply my knowledge of wireless networking best practices. I'll focus on analyzing the AP deployment and potential sources of interference in the office environment.

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Tarra

5 months ago

Based on the information provided, I'm leaning towards either the coverage issue or the localized interference as the most likely culprits. I'll make sure to carefully evaluate those two options.

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Elfriede

5 months ago

I'm a bit confused by the mention of 802.tr and 802.1K in the options. I'll need to double-check my understanding of those standards to determine if they're relevant here.

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Merilyn

5 months ago

Okay, let's see. The low MOS score and the UCC report suggest there's likely an issue with the wireless connection. I'm thinking it could be either coverage or interference-related.

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Jenise

5 months ago

Hmm, this seems like a tricky one. I'll need to carefully consider the details about the VoIP call and the network environment.

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Staci

10 months ago

I'm just picturing the VoIP engineer throwing their hands up in the air, muttering 'MOS of 2-3? That's not very mossy of you, is it?'

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Billye

8 months ago

C: Yeah, those could definitely be contributing factors to the poor-quality VoIP call.

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Shawnna

8 months ago

B: Or there could have been localized interference at the caller's location.

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Merilyn

8 months ago

A: Maybe the coverage AP deployment plans are the issue.

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Von

10 months ago

Ah, the age-old struggle of VoIP vs. the office environment. Coverage and interference, my friends. I bet the poor employee was walking around like a zombie, trying to get a decent call.

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Tequila

10 months ago

I'm going with coverage and interference too. 802.1K? What is this, a network exam from the 90s? That's got to be a red herring.

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Aimee

8 months ago

E) The client roamed into an area that continuously operates Zigbee.

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Willard

8 months ago

Yeah, I agree. Those seem like the most likely factors. 802.1K does seem outdated.

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Julieta

8 months ago

C) There was localized interference at the caller's location

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Novella

8 months ago

A) Coverage AP deployment plans generally don't support enough cell overlap for VoIP.

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Irma

10 months ago

Coverage and interference, for sure. I mean, who uses Zigbee in an office these days? That's just asking for trouble with your VoIP.

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Elbert

10 months ago

C) There was localized interference at the caller's location

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Maurine

10 months ago

A) Coverage AP deployment plans generally don't support enough cell overlap for VoIP.

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Louvenia

10 months ago

I bet it's the coverage and interference issues. VoIP is pretty sensitive to those kinds of problems. The MOS score of 2-3 is pretty low, so that tracks.

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Quentin

9 months ago

C) There was localized interference at the caller's location

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Elvis

9 months ago

A) Coverage AP deployment plans generally don't support enough cell overlap for VoIP.

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Mitzie

10 months ago

C) There was localized interference at the caller's location

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Silvana

10 months ago

A) Coverage AP deployment plans generally don't support enough cell overlap for VoIP.

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Alysa

10 months ago

Maybe the AP deployment plans not supporting enough cell overlap is also a factor.

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Torie

10 months ago

Hmm, I'm not sure about the 802.tr one. Isn't that something to do with time-sensitive networking? The interference and Zigbee factors seem more likely to me.

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Antonio

11 months ago

I agree, that could definitely affect the call quality.

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Gabriele

11 months ago

I think the localized interference could be a contributing factor.

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