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Difficulty: EasySwitching Concepts and VLANs

Match each Layer 2 switching and VLAN concept on the left with its corresponding primary function or operational characteristic on the right.

  • Access PortCarries traffic for a single assigned VLAN and connects directly to end-host devices.
  • Trunk PortCarries traffic for multiple VLANs simultaneously across a inter-switch connection.
  • Native VLANCarries untagged traffic across a trunk link without adding a VLAN header.
  • IEEE 802.1QStandard networking protocol that inserts a 4-byte VLAN tag into Ethernet frames.

Answer

Access Port matches with carrying traffic for a single assigned VLAN to end-host devices; Trunk Port matches with carrying traffic for multiple VLANs across inter-switch connections; Native VLAN matches with carrying untagged traffic across a trunk link; IEEE 802.1Q matches with the standard protocol that inserts a 4-byte tag into Ethernet frames.
Each concept directly aligns with its fundamental Layer 2 definition: Access ports connect single-VLAN end devices, Trunk ports carry multi-VLAN traffic across switches, Native VLAN handles untagged trunk traffic, and IEEE 802.1Q is the standard 4-byte framing protocol.

Step-by-Step Solution

1
Identify the basic definitions of switch port modes.
Access ports serve individual host devices in one VLAN, whereas trunk ports aggregate multiple VLANs across switch links.
Differentiating access vs. trunk ports is essential for proper Layer 2 interface configuration.
2
Identify trunking mechanisms and standards.
IEEE 802.1Q provides frame tagging by adding 4 bytes to the header, while Native VLAN handling defines how untagged frames are managed over that trunk.
Understanding 802.1Q tagging behavior ensures correct frame forwarding and prevents trunking configuration errors.

Key Concept

Switch Port Modes, VLAN Trunking, and 802.1Q Tagging Mechanisms
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Topics

Switching Concepts and VLANs

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