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What is the role of the root port in a switched network?

A.

It replaces the designated port when the designated port fails

Answers
A.

It replaces the designated port when the designated port fails

B.

It is the best path to the root from a nonroot switch.

Answers
B.

It is the best path to the root from a nonroot switch.

C.

It replaces the designated port when the root port fails.

Answers
C.

It replaces the designated port when the root port fails.

D.

It is administratively disabled until a failover occurs.

Answers
D.

It is administratively disabled until a failover occurs.

Suggested answer: B

Explanation:

The root port is the port on a nonroot switch that has the lowest cost to reach the root bridge in a switched network. The root bridge is the switch that is elected as the central point of the network by the spanning tree protocol (STP). The root port is responsible for forwarding traffic to the root bridge, and it is always in a forwarding state. The cost of a port is determined by the speed and bandwidth of the link, and the lower the cost, the better the path. If there are multiple paths to the root bridge with the same cost, the switch will choose the one with the lowest bridge ID as the tiebreaker. The root port does not replace or replace any designated port, which is the port that forwards traffic on a network segment.The root port is also not administratively disabled or enabled, but it is dynamically selected by STP1234.

1: Solved: STP: Root port vs. designated port - Cisco Community

2: Difference between Root Port and Designated Port - GeeksforGeeks

3: What is a Root Port - Snabay Networking

4: What is a Root Port - omnisecu.com

asked 07/10/2024
Opeyemi Oguntodu
35 questions
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