Juniper Exam JN0-363 Topic 2 Question 17 Discussion

Actual exam question for Juniper's JN0-363 exam

Question #: 17
Topic #: 2

You are bringing a new network online with three MX Series devices enabled for STP. No root bridge priority has been configured. Which statement is true in this scenario?

AThe device with the lowest MAC address will be elected as the root bridge.

BThe device with the highest MAC address will be elected as the root bridge.

CThe device with the lowest numerical lo0 IP address will be elected as the root bridge.

DThe device with the highest numerical lo0 IP address will be elected as The bridge.

Show Suggested Answer

Suggested Answer: C, D

by Brandon at Jul 29, 2023, 10:09 PM

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Leonardo

23 days ago

I heard the root bridge is chosen by the network administrator throwing darts at a dartboard with the device MAC addresses written on it. Closest one to the bullseye wins.

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Delsie

25 days ago

I bet the root bridge election is decided by a game of rock-paper-scissors between the MX Series devices. Highest score wins!

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Mariann

29 days ago

What? The device with the highest numerical lo0 IP address? That's just silly. Who designed these questions, a bunch of network gnomes?

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Herman

14 days ago

I think it's just to test our knowledge on STP configurations.

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Timothy

20 days ago

I agree, that does sound silly. Who comes up with these questions?

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Lamonica

1 months ago

Hmm, I'm leaning towards option C. The device with the lowest numerical lo0 IP address seems like the logical choice, right? Wait, do I even have a lo0 interface?

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Lynelle

4 days ago

User 2: But what if none of the devices have a lo0 interface? What happens then?

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Aliza

21 days ago

User 1: I think option C is correct. The device with the lowest numerical lo0 IP address will be elected as the root bridge.

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Ozell

1 months ago

I'm not sure about that. Shouldn't the device with the highest MAC address be elected as the root bridge in this scenario? This is confusing.

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Colette

10 days ago

No problem! It can be confusing, but now you know.

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Nieves

17 days ago

Oh, I see. Thanks for clarifying that.

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Alona

21 days ago

Actually, it's the device with the highest MAC address that will be elected as the root bridge.

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Cecil

1 months ago

I think the device with the lowest MAC address will be elected as the root bridge.

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Dottie

2 months ago

I'm not sure, but I think the rationale behind A) is that STP uses the Bridge ID, which is a combination of the bridge priority and MAC address to elect the root bridge.

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Richelle

2 months ago

I disagree, I believe the answer is B) The device with the highest MAC address will be elected as the root bridge.

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Oretha

2 months ago

I think option A is the correct answer. Without a configured root bridge priority, the device with the lowest MAC address will be elected as the root bridge.

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