CWNP Exam CWSP-207 Topic 2 Question 29 Discussion

Actual exam question for CWNP's CWSP-207 exam

Question #: 29
Topic #: 2

In the basic 4-way handshake used in secure 802.11 networks, what is the purpose of the ANonce and SNonce? (Choose 2)

AThey are used to pad Message 1 and Message 2 so each frame contains the same number of bytes.

BThe IEEE 802.11 standard requires that all encrypted frames contain a nonce to serve as a Message Integrity Check (MIC).

CThey are added together and used as the GMK, from which the GTK is derived.

DThey are input values used in the derivation of the Pairwise Transient Key.

EThey allow the participating STAs to create dynamic keys while avoiding sending unicast encryption keys across the wireless medium.

Show Suggested Answer

Suggested Answer: D, E

by Avery at Jul 05, 2025, 06:06 AM

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Antonio

9 days ago

I think the purpose of ANonce and SNonce is to create dynamic keys.

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Lashunda

15 days ago

Ah, the good old 4-way handshake! I bet the exam writer threw in some red herrings to trip us up. But I'm on to them - gotta love those nonces!

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Francene

16 days ago

D and E seem to be the right answers here. The nonces are used to derive the PTK, and they also help in creating dynamic keys without sending encryption keys over the wireless link.

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