What is one way in which STP protects a redundant Ethernet network?
A) Protects against frames looping the Layer 2 domains
B) Reduces collision domain size
C) Identifies and deletes invalid MAC to IP address mapping
D) Makes sure DTP VLANs do not have frame collisions
A
Explanation: A) The main function of Spanning Tree Protocol (STP) is to ensure that only one path is active at any one time on the network.
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