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Question 45 - JN0-351 discussion

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What is a purpose of using a spanning tree protocol?

A.
to look up MAC addresses
Answers
A.
to look up MAC addresses
B.
to eliminate broadcast storms
Answers
B.
to eliminate broadcast storms
C.
to route IP packets
Answers
C.
to route IP packets
D.
to tunnel Ethernet frames
Answers
D.
to tunnel Ethernet frames
Suggested answer: B

Explanation:

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.

asked 18/09/2024
Helania Stevenson
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