Which of the following is a spanning tree option in EX Series switches?

Root protection is a spanning tree option in EX Series switches, and it plays a crucial role in enhancing the stability and reliability of a network. This feature is designed to prevent a switch from becoming the root bridge unintentionally, which can lead to network issues like loops and instability.

When enabled, root protection ensures that if a switch receives a Bridge Protocol Data Unit (BPDU) that has a higher priority than its configured value, it will not participate in becoming the root bridge. Instead, it will put the participating port into a blocking state if it happens to receive such BPDUs from a port that is normally used for connecting to other switches. This effectively helps to safeguard the existing topology and maintain a desired bridge structure.

This robust mechanism prevents unauthorized devices from altering the spanning tree topology, ensuring that only the designated root bridge remains as the root of the spanning tree. By doing so, it strengthens the overall security of the network and maintains its efficiency in managing data traffic.

In the context of the other options, while MAC move limiting, root guard, and BPDU source guard all have their respective functionalities in managing network traffic and security, they do not specifically serve as spanning tree options in the same way root protection does. Root guard, although designed