Question: 1. Subnetting operates at Layer _________while VLANs function at Layer ___________.
2. Which VLAN on a switch manages untagged frames?
3. An attacker configures a VLAN frame with two tags instead of just one. The first tag directs the frame to the authorized VLAN. After the frame enters the first VLAN, the switch appropriately removes the tag, then discovers the next tag, and sends the frame along to a protected VLAN, which the attacker is not authorized to access. What kind of attack is this?
4. Why is a BPDU filter needed at the demarc point?
5. Only one exists on a network using STP.