CWNP CWNA-109 Exam - Topic 6 Question 13 Discussion

Actual exam question for CWNP's CWNA-109 exam

Question #: 13
Topic #: 6

You support a WLAN using dual-band 802.11ac three stream access points. All access points have both the 2.4 GHz and 5 GHz radios enabled and use 40 MHz channels in 5 GHz and 20 MHz channels in 2.4 GHz. A manager is concerned about the fact that each access point is connected using a 1 Gbps Ethernet link. He is concerned that the Ethernet link will not be able to handle the load from the wireless radios. What do you tell him?

AHis concern is valid and the company should upgrade all Ethernet links to 10 Gbps immediately.

BHis concern is valid and the company should immediately plan to run a second 1 Gbps Ethernet link to each AP.

CHis concern is invalid because the AP will compress all data before transmitting it onto the Ethernet link.

DDue to 802.11 network operations and the dynamic rates used by devices on the network, the two radios will likely not exceed the 1 Gpbs Ethernet link.

Show Suggested Answer

Suggested Answer: D

What you should tell him is thatdue to 802.11 network operations and the dynamic rates used by devices on the network, the two radios will likely not exceed the 1 Gbps Ethernet link. This is because the actual throughput of an 802.11 network is much lower than the theoretical data rates due to factors such as overhead, contention, interference, retransmissions, and environmental conditions. Moreover, the data rates used by devices on the network vary depending on their distance, signal quality, capabilities, and configuration. Therefore, it is unlikely that both radios of the AP will simultaneously use the maximum data rates and saturate the 1 Gbps Ethernet link. Upgrading to a 10 Gbps Ethernet link or running a second 1 Gbps Ethernet link may be unnecessary and costly. Compressing all data before transmitting it onto the Ethernet link may introduce additional overhead and latency.Reference:[CWNP Certified Wireless Network Administrator Official Study Guide: Exam CWNA-109], page 227; [CWNA: Certified Wireless Network Administrator Official Study Guide: Exam CWNA-109], page 217.

by Carry at Sep 13, 2024, 03:47 AM

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Lashaunda

3 months ago

Upgrading to 10 Gbps seems like overkill to me.

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Samira

3 months ago

Totally agree, the dynamic rates will keep it under control!

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Quentin

3 months ago

Wait, are we sure the APs compress data? That sounds off.

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Johnna

4 months ago

I think the 1 Gbps link should be fine for most scenarios.

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Eden

4 months ago

The 5 GHz band can handle more data, but it depends on the number of users.

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Gail

4 months ago

I think the APs manage traffic pretty well, so maybe the concern isn't as big as it seems. Option D sounds like the right choice based on what we've studied.

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Tawanna

4 months ago

I feel like the manager's concern could be valid, but I don't recall if we ever talked about needing to upgrade to 10 Gbps links.

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Viola

4 months ago

I remember practicing a similar question where we discussed how the dynamic rates of devices affect overall bandwidth. I think option D makes sense.

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Delmy

5 months ago

I'm not entirely sure, but I think the 1 Gbps link should be enough since the actual throughput is usually lower than the maximum.

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Arminda

5 months ago

Okay, let me see if I can break this down. The access points have dual-band 802.11ac radios, which can support high data rates. But the Ethernet link is only 1 Gbps, so that could be a bottleneck. I'll need to consider the real-world usage and traffic patterns to determine if the Ethernet link is sufficient.

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Stefanie

5 months ago

Hmm, this is a tricky one. I'm thinking the key is understanding how the wireless radios and Ethernet link work together. I'll need to think through the data rates and throughput to figure out the best approach.

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Avery

5 months ago

I'm not sure about this one. The question seems to be asking about the capacity of the Ethernet link, but I'm not sure how the 802.11ac radios and channel widths factor into that.

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Matt

5 months ago

I've got this one! The manager's concern is valid, but the solution is simple. The 802.11ac radios can easily saturate a 1 Gbps Ethernet link, so the company should upgrade to 10 Gbps links right away. That will give them plenty of headroom for the wireless traffic.

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Mitzie

5 months ago

Okay, let's see here. The developer updated the blueprint, so it's probably not an issue with saving or publishing the changes. I'm leaning towards either A or B as the most likely reason.

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Jillian

1 year ago

Hey, why don't we just tell the manager to install a giant hamster wheel to power the APs? That'll solve the Ethernet link issue. But seriously, I think D is the way to go here.

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Mica

1 year ago

D) Due to 802.11 network operations and the dynamic rates used by devices on the network, the two radios will likely not exceed the 1 Gpbs Ethernet link.

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Johna

1 year ago

C) His concern is invalid because the AP will compress all data before transmitting it onto the Ethernet link.

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Estrella

1 year ago

C? Are you kidding me? Data compression won't help here. The AP doesn't have that kind of processing power. I'm going with D. The manager is worrying too much.

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Stevie

1 year ago

I disagree. The manager's concern is valid. Even though the theoretical throughput is lower, the real-world usage could exceed the 1 Gbps Ethernet link, especially with multiple high-bandwidth clients. I'd go with B and plan to run a second Ethernet link.

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Mitzie

1 year ago

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Leonora

1 year ago

D) Due to 802.11 network operations and the dynamic rates used by devices on the network, the two radios will likely not exceed the 1 Gpbs Ethernet link.

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Kasandra

1 year ago

B) His concern is valid and the company should immediately plan to run a second 1 Gbps Ethernet link to each AP.

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Jospeh

1 year ago

I think the correct answer is D. The 802.11ac access points have a combined theoretical maximum throughput of 1.3 Gbps, which is lower than the 1 Gbps Ethernet link. The dynamic rates used by the devices will ensure that the Ethernet link won't be saturated.

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Eleonora

1 year ago

But wait, maybe the AP will compress the data before sending it over the Ethernet link.

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Yuki

1 year ago

If the manager is really worried, he should just switch to wired Ethernet. No more pesky wireless problems to deal with! *chuckles*

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Nickolas

1 year ago

If the manager is really worried, he should just switch to wired Ethernet. No more pesky wireless problems to deal with! *chuckles*

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Portia

1 year ago

D) Due to 802.11 network operations and the dynamic rates used by devices on the network, the two radios will likely not exceed the 1 Gpbs Ethernet link.

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Bok

1 year ago

C) His concern is invalid because the AP will compress all data before transmitting it onto the Ethernet link.

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Jose

1 year ago

Option C is just plain silly. Data compression won't magically make the Ethernet link handle more traffic. I think the manager is right to be concerned here.

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Linn

1 year ago

D) Due to 802.11 network operations and the dynamic rates used by devices on the network, the two radios will likely not exceed the 1 Gpbs Ethernet link.

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Ronny

1 year ago

B) His concern is valid and the company should immediately plan to run a second 1 Gbps Ethernet link to each AP.

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Val

1 year ago

A) His concern is valid and the company should upgrade all Ethernet links to 10 Gbps immediately.

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Kasandra

1 year ago

I agree, we should consider upgrading the Ethernet links.

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Hana

1 year ago

Upgrading to 10 Gbps Ethernet is overkill. Running a second 1 Gbps link is a more reasonable solution to handle the load from the wireless radios.

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Gilma

1 year ago

Running a second 1 Gbps link is a more reasonable solution to handle the load from the wireless radios.

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Bo

1 year ago

Upgrading to 10 Gbps Ethernet is overkill.

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Catherin

1 year ago

D) Due to 802.11 network operations and the dynamic rates used by devices on the network, the two radios will likely not exceed the 1 Gpbs Ethernet link.

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Delila

1 year ago

B) His concern is valid and the company should immediately plan to run a second 1 Gbps Ethernet link to each AP.

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Annabelle

1 year ago

The manager's concern seems valid, as the wireless radios could potentially saturate the 1 Gbps Ethernet link. Option D seems like the best choice, as the dynamic nature of 802.11 should prevent the radios from exceeding the bandwidth.

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Katie

1 year ago

I agree, the network operations and dynamic rates should help manage the load on the Ethernet link.

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Oneida

1 year ago

Option D seems like the best choice, as the dynamic nature of 802.11 should prevent the radios from exceeding the bandwidth.

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Ma

1 year ago

I think the manager's concern is valid.

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