What problem does Spanning Tree Protocol (STP) address in a LAN?

• A. STP prevents Layer 2 loops by creating a loop-free tree topology and blocking redundant paths.
• B. STP encrypts data across the local network to prevent eavesdropping.
• C. STP assigns IP addresses automatically to devices on the network.
• D. STP manages VLAN tagging across switches.

Answer: (D)