Refer to the exhibit. Which VLAN ID is associated with the native VLAN?

The correct answer is A. VLAN 1. In Cisco switches, if the native VLAN is not explicitly configured on a trunk port, it defaults to VLAN 1.

Submitted by tarun92· Mar 5, 2026Network Access

Question

Exhibits

Options

AVLAN 1
BVLAN 5
CVLAN 10
DVLAN 20

How the community answered

(64 responses)

A
94% (60)
B
2% (1)
C
3% (2)
D
2% (1)

Why each option

In Cisco switches, if the native VLAN is not explicitly configured on a trunk port, it defaults to VLAN 1.

AVLAN 1Correct

By default, on Cisco switches, VLAN 1 is assigned as the native VLAN for 802.1Q trunks if no other VLAN is explicitly configured using the `switchport trunk native vlan` command.

BVLAN 5

VLAN 5 is a user-defined VLAN and not the default native VLAN unless explicitly configured as such.

CVLAN 10

VLAN 10 is a user-defined VLAN and not the default native VLAN unless explicitly configured as such.

DVLAN 20

VLAN 20 is a user-defined VLAN and not the default native VLAN unless explicitly configured as such.

Concept tested: Default native VLAN on Cisco switches

Source: https://www.cisco.com/c/en/us/td/docs/switches/lan/catalyst3560/software/release/12-2_55_se/configuration/guide/3560scg/swvlan.html

Topics

#Native VLAN#VLAN Trunking

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