How many usable L2 VLANs are available?

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Multiple Choice

How many usable L2 VLANs are available?

Explanation:
VLAN IDs are defined by a 12-bit field in the 802.1Q tag, which allows 4096 possible IDs (0 through 4095). However, two values are reserved and cannot be used as actual VLAN numbers: 0 is used to indicate priority-tagged frames (or no VLAN in some tagging modes), and 4095 is reserved for future use/implementation. Removing these leaves 4094 usable VLANs. In practice, networks often avoid VLAN 1 for security reasons, but the total number of usable L2 VLANs remains 4094.

VLAN IDs are defined by a 12-bit field in the 802.1Q tag, which allows 4096 possible IDs (0 through 4095). However, two values are reserved and cannot be used as actual VLAN numbers: 0 is used to indicate priority-tagged frames (or no VLAN in some tagging modes), and 4095 is reserved for future use/implementation. Removing these leaves 4094 usable VLANs. In practice, networks often avoid VLAN 1 for security reasons, but the total number of usable L2 VLANs remains 4094.

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