[&] What role does the key confirmation key (KCK) serve in the exchange?
- Verifies message integrity -- Correct
- Encrypts broadcast messages
- Encrypts unicast data
- Confirms user's device identity

[&] In WPA3, which hashing function is used for key derivation?
- HMAC-MD5
- HMAC-SHA256 -- Correct
- HMAC-SHA1
- RC4

[&] What must be developed before the first EAP over LAN exchange in WPA2 and WPA3?
- Key encryption key
- Pairwise master key -- Correct
- Key confirmation key
- Temporal key

[&] What is a 'nonce' in the context of key exchanges?
- A number used once -- Correct
- A hash digest value
- A shared secret key
- A fixed password

[&] What function is invoked to create the pairwise transient key in WPA2?
- CSPRNG
- PRF512 -- Correct
- HMAC-SHA256
- PRF256

[&] How does the access point ensure the client has derived the same PTK?
- By re-sending initial handshake messages
- By checking the client's IP address
- By validating the message integrity code -- Correct
- Through periodic authentication requests