300-115 question 102 discussion


What does the command vlan dot1q tag native accomplish when configured under global

  • A. All frames within the native VLAN are tagged, except when the native VLAN is set to 1.
  • B. It allows control traffic to pass using the non-default VLAN.
  • C. It removes the 4-byte dot1q tag from every frame that traverses the trunk interface(s).
  • D. Control traffic is tagged.
Created 9 months, 1 week ago by n.warnakula@gmail.com


D seems to be the wrong answer. A seems to be more plausible


I think D is the correct answer. Control traffic passes in the native vlan, which gets tagged by the command, making D the only 100% true statement. A is true as far as 'all frames in the native vlan are tagged', but there is not exception when native vlan is 1.




D: To enable dot1q (IEEE 802.1Q) tagging for all native VLANs on all trunked ports on the switch, use the vlan dot1Q tag native command.