I would say I messed up but I am willing to fix whatever mistake I made. And say it kindly
Answer:
Any of the following:
1. Root Guard
2. BPDU Guard
3. BPDU Filtering
Explanation:
Given that STP an acronym of Spanning Tree Protocol, and its major purpose is to stop the bridge loops and the broadcast radiation that emanates from its topology.
Cisco carried out three instruments or tools to protect the STP topology. These protection tools accompany the STP, and they are the following:
1. Root Guard
2. BPDU Guard
3. BPDU Filtering
I think it’s A
Hope that helped :)
<listname-subscriexample.org>
You can use this address command to initiate a subscription for a different address than the one from which you send the email containing the command, but the confirmation request will be sent to the account being subscribed before a subscription will be added. This prevents others from subscribing you via email without your permission.
The command begins with the familiar 'listname-subscribe' command address described previously, but you also need to provide the address of the alternate account. Just add a hyphen and your address (substituting an equal sign () instead of an at sign )) after the command.
Unless this is a public list, this command will probably be rejected