In medium and large WLAN networks, if the VLAN Pool uses HASH to allocate VLANs, the number of users in each VLAN will be evenly divided.

Question

Options

• ATRUE
• BFALSE

• A
  27% (6)
• B
  73% (16)

Explanation

Option B (FALSE) is correct because HASH-based VLAN allocation assigns users to VLANs by hashing a client identifier (typically the MAC address or username), which produces a deterministic mapping - not a guaranteed equal one. Since hash outputs depend on the actual distribution of input values, some VLANs will naturally receive more clients than others, resulting in uneven user counts across VLANs.

Option A is wrong because it conflates "distributed" with "evenly divided" - a hash function spreads load across VLANs but makes no mathematical guarantee of equal distribution. If you want near-even distribution, a round-robin or sequential allocation method is the appropriate choice, as it assigns users to VLANs in rotation.

Memory tip: Think of hashing like sorting people by the last digit of their phone number - most digits will appear, but you won't necessarily get exactly the same count for each. "HASH = consistent assignment, not equal assignment."

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