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Juniper Exam JN0-351 Topic 1 Question 46 Discussion

Actual exam question for Juniper's JN0-351 exam
Question #: 46
Topic #: 1
[All JN0-351 Questions]

What is a purpose of using a spanning tree protocol?

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Suggested Answer: B

A broadcast storm is a network condition where a large number of broadcast packets are sent and received by multiple devices, causing congestion and performance degradation1.A broadcast storm can occur when there are loops in the network topology, meaning that there are multiple paths between two devices2.

A spanning tree protocol is a network protocol that prevents loops from being formed when switches or bridges are interconnected via multiple paths.It does this by creating a logical tree structure that spans all the devices in the network, and disabling or blocking the links that are not part of the tree, leaving a single active path between any two devices3.

By eliminating loops, a spanning tree protocol also eliminates broadcast storms, as broadcast packets will not be forwarded endlessly along the looped paths.Instead, broadcast packets will be sent only along the tree structure, reaching each device once and avoiding congestion3.


by Kaitlyn at Jul 31, 2025, 04:51 AM

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Tracey
5 days ago
I remember practicing a question about broadcast storms, and I think option B might be the right answer since STP helps with that.
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Gerri
11 days ago
I think spanning tree protocol is mainly about preventing loops in the network, but I'm not sure which option that relates to.
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Anthony
16 days ago
I'm confident the answer is B. Spanning tree protocols are designed to identify redundant links in a network and block them to prevent broadcast storms and maintain a loop-free topology.
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Galen
21 days ago
Okay, I remember learning about spanning tree protocols in class. I believe the main purpose is to prevent network loops and ensure redundant links don't cause issues, so I'll select option B.
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Dorothy
26 days ago
Hmm, I'm a bit confused on this one. I know spanning tree protocols have something to do with network topology, but I'm not sure if it's for looking up MAC addresses or routing IP packets. I'll have to think this through carefully.
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Candra
1 months ago
I'm pretty sure the purpose of a spanning tree protocol is to eliminate broadcast storms, so I'll go with option B.
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Trina
1 months ago
Haha, tunneling Ethernet frames? That's a new one! I'm going to have to go with B on this one. Spanning tree keeps those pesky loops at bay.
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Angelyn
2 months ago
Yes, that's correct. Spanning tree protocol is used to prevent loops in a network.
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Blythe
2 months ago
I'm going with B. Broadcast storms are the bane of network admins, and spanning tree is the solution to that problem. The other choices just don't seem as relevant.
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Annelle
2 months ago
I believe it also helps in creating a loop-free topology.
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Laurel
3 months ago
Hmm, I'd say B or C. Routing IP packets seems like a reasonable use case for spanning tree, but eliminating broadcast storms is the classic one. Not sure about the other options though.
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Reiko
3 months ago
I agree with Katlyn, using a spanning tree protocol helps prevent broadcast storms.
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Barrie
3 months ago
Definitely B. Spanning tree protocol is all about preventing broadcast storms and maintaining a loop-free topology. I'm pretty sure that's the main purpose.
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Martha
2 months ago
Without spanning tree protocol, networks could experience issues with loops and broadcast storms.
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Kris
2 months ago
It also helps maintain a loop-free topology, which is important for network stability.
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Phyliss
3 months ago
I agree, B is the correct answer. Spanning tree protocol helps prevent broadcast storms.
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Katlyn
3 months ago
I think the purpose is to eliminate broadcast storms.
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