DATA LINK LAYER WIRED NETWORKS
INTRODUCTION
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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4094
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4095
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4096
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4093
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Detailed explanation-1: -NOTE: A switch supports a maximum of 4096 VLANs, among which VLANs 0 and 4095 are reserved for system use, and VLAN 1 is the default VLAN. Therefore, you can only create VLANs 2 to 4094.
Detailed explanation-2: -4094, are allocated for internal use. Internally allocated. 3968-4047 and 4094. You cannot create, delete, or modify any VLANs within the block reserved for internal use. VLANs 3968 to 4047 and 4094 are reserved for internal use; these VLANs cannot be changed or used.
Detailed explanation-3: -Because there are 12 bits in the VLAN ID field of the IEEE 802.1Q header, 4096 is the upper boundary for the number of VLANs available on Catalyst switches.
Detailed explanation-4: -Why no. of VLANs allowed on a switch is 4096 which is huge compared to the maximum possibility of VLANs which will actually work at a time on a 24 port switch can be up to 24 only (if we have each port in a different VLAN). One reason could be for future use but 4096 port switch is hard to see in future.