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I have a query on one of the review questions of SOHO 802.11 Security chapter of Sybex study guide.

When configuring an 802.11 client station for WPA2-Personal, what security credentials can be used? (Choose all that apply)
A. Server-sidew certificate
B. 64-bit PSK
C. 8-63 Character PSK
D. Token card
E. Client-side certificate
F. 64-character passphrase
G. 8-to-63 character passphrase.

They had mentioned that B and G are the correct answers.

WPA2-Personal uses 256-bit PSK. Hence I beleive 64-bit PSK is the wrong answer. If it were 64 hex character then it would have been fine. Correct me if I am wrong.

Thanks in advance.

You are correct.
The PSK is 256 bit, and a 64 hex character key is 256 bits.

If a passphrase is used, it goes through the PBKDF2-HMAC-SHA1 algorithm to also become a 256 bit key for use.

Yea, I have this as an error in my notes. Great attention to detail! Your level of detail is what is needed to pass the CWNP exams. Keep it up!