Which of the following statements about VLAN stacking is FALSE?

The statement regarding VLAN stacking that is indicated as false highlights a common misconception about the VLAN ID field's size. When VLAN stacking is employed, also known as Q-in-Q, it does allow for the insertion of an additional VLAN tag into the Ethernet frame but does not change the size of the existing VLAN ID field.

In standard Ethernet frames, the VLAN ID field within the IEEE 802.1Q header is always 12 bits long, which allows for a maximum of 4096 VLANs. When VLAN stacking is used, the original Ethernet frame retains its existing VLAN tag (the outer tag) while a new tag is added (the inner tag). However, both tags use the same 12-bits for their respective VLAN IDs, meaning the maximum number of VLANs that can be supported does not increase due to a larger VLAN ID field; rather, it leverages existing IDs to allow for another layer of tagging.

This mechanism effectively allows for greater VLAN segmentation while utilizing the same ID length, making the assertion that VLAN stacking increases the size of the VLAN ID field false. The other statements accurately reflect key features of VLAN stacking, including service provider capabilities to support overlapping VLAN IDs and the overall increase in the number of VLANs managed through the additional