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200-301 · Question #1144

200-301 Question #1144: Real Exam Question with Answer & Explanation

The correct answer is A: Switch(config-if)#switchport mode trunk. To pass traffic from multiple VLANs and set a custom native VLAN, an interface must be configured as a trunk port.

Submitted by kevin_r· Mar 5, 2026Network Access

Question

Refer to the exhibit. An engineer configures interface fa0/1 on SW1 and SW2 to pass traffic from two different VLANs. For security reasons, company policy requires the native VLAN to be set to a nondefault value. Which configuration meets this requirement?

Options

  • ASwitch(config-if)#switchport mode trunk
  • BSwitch(config-if)#switchport mode trunk
  • CSwitch(config-if)#switchport mode dynamic
  • DSwitch(config-if)#switchport mode access

Explanation

To pass traffic from multiple VLANs and set a custom native VLAN, an interface must be configured as a trunk port.

Common mistakes.

  • B. This option is identical to A, but it's a duplicate and not the designated correct answer.
  • C. The switchport mode dynamic command relies on DTP negotiation, which may not always result in a trunk link or allow for consistent native VLAN configuration across different switches.
  • D. The switchport mode access command configures an interface to carry traffic for only a single VLAN, which fails the requirement to pass traffic from two different VLANs.

Concept tested. Trunk port configuration with native VLAN

Reference. https://www.cisco.com/c/en/us/td/docs/switches/lan/catalyst3750/software/release/12-2_55_se/configuration/guide/scg/swtrunks.html

Topics

#VLAN trunking#Native VLAN#Switchport configuration

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