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Cisco Certified Network Associate (CCNA) · Cisco
Select 2 answers.
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Written by other learners. Comments can disagree with the marked answer — check the official documentation when in doubt.
VLAN 1 This is the default VLAN on all Cisco switches. All switch ports are assigned to VLAN 1 by default. It is used for: Default traffic Control protocols (CDP, STP, etc.)🔹 VLAN 0 VLAN 0 is used to carry priority-tagged frames It indicates: The frame is untagged for VLAN membership But can still carry 802.1Q priority information It is treated as part of the default VLAN behavior
show vlan this command will help you see the default vlans 1 1002 1003 1004 1005
VLAN Name Status Ports ---- -------------------------------- --------- ------------------------------- 1 default active Fa0/1, Fa0/2, Fa0/3, Fa0/4 Fa0/5, Fa0/6, Fa0/7, Fa0/8 Fa0/9, Fa0/10, Fa0/11, Fa0/12 Fa0/13, Fa0/14, Fa0/15, Fa0/16 Fa0/17, Fa0/18, Fa0/19, Fa0/20 Fa0/21, Fa0/22, Fa0/23, Fa0/24 Gig0/1, Gig0/2 1002 fddi-default active 1003 token-ring-default active 1004 fddinet-default active 1005 trnet-default active