A retail store has newly built a WLAN network. For the in-store barcode scanner business, users require multiple barcode scanners to connect to the same SSID, but each barcode scanner needs to be…

Question

Options

• AWPA/WPA2-DPSK authentication
• BWPA/WPA2-PPSK authentication
• CStatic WEP authentication
• DWPA/WPA2-802.1X authentication

• A
  4% (1)
• B
  81% (22)
• C
  4% (1)
• D
  11% (3)

Explanation

WPA/WPA2-PPSK (Private Pre-Shared Key) is the correct answer because it allows multiple clients to share the same SSID while each device is assigned its own unique pre-shared key - all without requiring a backend RADIUS or authentication server, which is exactly what this scenario demands.

Why the distractors fail:

• A (DPSK - Dynamic PSK): Despite the similar name, DPSK dynamically generates keys through a backend server, violating the "no authentication server" requirement.
• C (Static WEP): WEP uses a single, shared key across all devices - there is no mechanism to assign per-device keys, and it is also cryptographically broken.
• D (802.1X): This is an enterprise authentication framework that requires a RADIUS server (EAP-based), directly contradicting the constraint.

Memory tip: Think of the P in PPSK as "Personal/Private" - each device gets its own private PSK on a shared SSID, no server needed. If the question mentions "per-device keys + no server," PPSK is always the answer.

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