Juniper Exam JN0-251 Topic 2 Question 26 Discussion

Actual exam question for Juniper's JN0-251 exam

Question #: 26
Topic #: 2

[All JN0-251 Questions]

Which statement is correct about a WLAN RF medium?

AA WLAN RF is a full duplex, contention free medium where each client transmits on a separate channel.

BA WLAN RF is a full-duplex, contention-free medium where 802.11 stations can transmit and receive at the same time.

CA WLAN RF is a half-duplex, shared medium where 802.11 stations contend with each other for access.

DA WLAN RF is a half-duplex, contention-free medium where the access point polls each station in turn.

Show Suggested Answer

Suggested Answer: C

According to the Cisco Content Hub1, Wi-Fi is half duplex, meaning we can either transmit (Tx) or receive (Rx) on the medium, the clients and the network take turns accessing the medium. Wi-Fi is contention based, meaning there are rules for stations trying to access the medium and collisions (due to two or more stations simultaneously accessing the medium) are worked out fairly so everyone gets a chance.

by Colette at Apr 15, 2024, 12:24 AM

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Shizue

6 months ago

I believe option B is correct because a contention-free medium allows stations to transmit and receive simultaneously.

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Suzi

6 months ago

But what about option C? Isn't a WLAN RF a shared medium where stations contend for access?

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Halina

6 months ago

I agree, because in a WLAN RF, 802.11 stations can transmit and receive at the same time.

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Frederic

6 months ago

I think the correct statement is B.

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Chandra

6 months ago

I'm not sure, but option D doesn't sound like how WLAN RF works to me.

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Theresia

6 months ago

I agree with User4, option B seems logical.

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Sarina

7 months ago

I think option B makes sense because it mentions full-duplex communication.

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Mirta

7 months ago

I'm pretty sure option C is the right answer.

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Jacinta

7 months ago

I disagree, I believe option B is the correct one.

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Carmela

7 months ago

I think the correct statement is option A.

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Okay, let's break this down. A WLAN RF medium is either full-duplex or half-duplex, and it's either contention-free or contention-based. I'm leaning towards option C, but I want to hear what the others think.

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Loise

8 months ago

Hmm, I'm not too sure about this one. A WLAN RF medium is something I don't have much experience with. Anyone have any insights to share?

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Dick

8 months ago

Okay, let's break this down. Full-duplex means you can transmit and receive at the same time, right? And contention-free means no one has to compete for the medium. I think option B is the winner here.

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Laurel

6 months ago

So, option B it is then.

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Lindsey

7 months ago

I agree, full-duplex and contention-free.

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Van

7 months ago

I think option B is correct.

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Lucina

8 months ago

You know, I bet the test writers are trying to trick us with all these technical details. I'm just going to go with my gut and choose the answer that sounds most plausible.

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Raymon

8 months ago

I think this question is a bit tricky, but I'm confident I can figure it out. Let's see what the others think.

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Candida

8 months ago

Haha, I bet the guy who wrote this question is sitting in his office, laughing maniacally at how confused we all are. Networking is not my strong suit, that's for sure.

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Viva

8 months ago

I think option C is the correct answer. A WLAN RF is a shared medium, and the 802.11 stations have to contend with each other to access it. That's the way I understand it, at least.

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Myra

8 months ago

Hmm, let me think about this. I'm pretty sure WLAN uses a half-duplex medium, where stations have to contend for access. But I could be wrong, these networking concepts can be confusing.

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Jolene

8 months ago

This is a tricky question, I'm not sure I fully understand the differences between the options. Can someone help me out here?

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Juniper Exam JN0-251 Topic 2 Question 26 Discussion

Contribute your Thoughts:

Shizue

Suzi

Halina

Frederic

Chandra

Theresia

Sarina

Mirta

Jacinta

Carmela

Lachelle

Loise

Dick

Laurel

Lindsey

Van

Lucina

Raymon

Candida

Viva

Myra

Jolene