Which of the following best describes the purpose of 802.1Q in switching?

Study for the Network+ exam with Jason Dion's Course Test. Dive into multiple-choice questions, detailed explanations, and hints that prepare you for success. Secure your certification with confidence!

Multiple Choice

Which of the following best describes the purpose of 802.1Q in switching?

Explanation:
802.1Q defines how VLAN tagging is performed on Ethernet frames so multiple VLANs can share a single trunk between switches. It inserts a tag into each frame that carries the VLAN ID, allowing every switch along the trunk to know which VLAN the frame belongs to and forward it accordingly. This tagging enables separation of traffic across the same physical link, which is the essence of VLAN trunking. This isn’t about wireless security, IP addressing management, or transport-layer flow control—those are handled by other mechanisms at different layers or by different technologies.

802.1Q defines how VLAN tagging is performed on Ethernet frames so multiple VLANs can share a single trunk between switches. It inserts a tag into each frame that carries the VLAN ID, allowing every switch along the trunk to know which VLAN the frame belongs to and forward it accordingly. This tagging enables separation of traffic across the same physical link, which is the essence of VLAN trunking.

This isn’t about wireless security, IP addressing management, or transport-layer flow control—those are handled by other mechanisms at different layers or by different technologies.

More Multiple Choice Questions
Subscribe

Get the latest from Passetra

You can unsubscribe at any time. Read our privacy policy