Which of the following description for PSK certification is correct? (Select 3 Answers)

Question

Options

• APSK certification need to configure the same pre-shared key in the wireless client and equipment
• BWPA and WPA2 are both support PSK certification
• CThe process of PSK certification is like the process of shared-key authentication, so the same
• DPSK certification is through four handshake Key negotiation to verify the legitimacy of the STA side

• A
  79% (42)
• C
  21% (11)

Explanation

PSK (Pre-Shared Key) authentication requires both the wireless client and the access point to be configured with the identical pre-shared key (A), which serves as the foundation for deriving session keys. Both WPA-PSK and WPA2-PSK modes exist and are widely deployed (B), so both standards legitimately support this method. Authentication is verified through the 4-way EAPOL handshake (D), which confirms the client (STA) holds the correct key without ever transmitting it directly over the air.

Option C is wrong because PSK is fundamentally different from WEP's shared-key authentication - WEP's challenge-response mechanism exposes the key to passive capture, whereas PSK uses the 4-way handshake to prove knowledge of the key cryptographically without revealing it.

Memory tip: Think of PSK as "Same Key, Safe Shake" - both sides share the Same Key, and legitimacy is proven via the 4-way handShake. WEP's shared-key auth is the insecure impostor that PSK replaced, so never confuse the two.

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