Which two VLAN IDs represent default or reserved VLANs? (Choose two.)
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Correct answer: 1, 1005.
Why this is the answer
VLAN 1 is the default VLAN on Cisco switches. All ports are initially members of VLAN 1, and it cannot be deleted or renamed. It's also the default for control plane protocols like CDP and VTP. VLANs 1002-1005 are reserved for legacy token ring and FDDI VLANs and cannot be used for Ethernet. Therefore, VLAN 1 and VLAN 1005 are both reserved or default VLANs. VLAN 0 is not a valid VLAN ID. VLAN 1006 is a valid, user-configurable VLAN ID, not reserved. VLAN 4096 is outside the standard 1-4094 range for 802.1Q VLANs.
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