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CWNP CWSP-207 Exam - Topic 2 Question 29 Discussion

In the basic 4-way handshake used in secure 802.11 networks, what is the purpose of the ANonce and SNonce? (Choose 2)
D) They are input values used in the derivation of the Pairwise Transient Key. and E) They allow the participating STAs to create dynamic keys while avoiding sending unicast encryption keys across the wireless medium.
A) They are used to pad Message 1 and Message 2 so each frame contains the same number of bytes.
B) The IEEE 802.11 standard requires that all encrypted frames contain a nonce to serve as a Message Integrity Check (MIC).
C) They are added together and used as the GMK, from which the GTK is derived.

CWNP CWSP-207 Exam - Topic 2 Question 29 Discussion

Actual exam question for CWNP's CWSP-207 exam
Question #: 29
Topic #: 2
[All CWSP-207 Questions]

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

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Suggested Answer: D, E

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

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Noelia
8 months ago
I thought they were just for padding frames, but I guess not!
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Ceola
8 months ago
Wait, are they really used for that? Sounds a bit off.
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Laura
9 months ago
Definitely! It's all about dynamic key creation.
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Melda
9 months ago
They help derive the Pairwise Transient Key, right?
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Arthur
9 months ago
Yeah, they’re crucial for avoiding unicast key sharing.
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Kaitlyn
9 months ago
I'm a bit confused about the role of nonces in the handshake. I thought they were just for integrity checks, but now I'm not so sure.
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Rosenda
9 months ago
I feel like I saw a question similar to this in practice exams, and it was about how they help in creating dynamic keys.
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Floyd
10 months ago
I remember something about them being used in the key derivation process, maybe for the Pairwise Transient Key? That sounds familiar.
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Beth
10 months ago
I think the ANonce and SNonce are definitely related to key generation, but I'm not sure if they directly create the GTK or something else.
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Dusti
10 months ago
The nonces are used to create dynamic keys and avoid sending encryption keys over the wireless medium. That's option E, which seems to be the best answer here.
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Tamekia
10 months ago
Hmm, I'm not entirely sure about this one. I know the nonces are important for security, but I'm not confident I can explain their exact purpose. I'll have to think this through carefully.
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Shenika
10 months ago
Okay, I've got this. The ANonce and SNonce are used as input values to derive the Pairwise Transient Key. That's option D, so I'll go with that.
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Raul
11 months ago
I'm a bit confused by the options here. I'll need to review my notes on the 4-way handshake to make sure I understand the role of the nonces.
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Nguyet
11 months ago
This question looks tricky, but I think I can figure it out. The key is to focus on the purpose of the ANonce and SNonce in the 4-way handshake.
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Ahmad
1 year ago
I'm just impressed they managed to work the word 'nonce' into a networking question. That's some next-level vocabulary right there.
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Tawny
1 year ago
I believe they are also used in the derivation of the Pairwise Transient Key.
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Celeste
1 year ago
Option C is just plain weird. Adding the nonces to get the GMK? What is this, amateur hour? I'm going with D and E, no doubt about it.
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Nenita
11 months ago
Definitely, D and E are the right answers. ANonce and SNonce play important roles in key derivation.
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Jolanda
11 months ago
Yeah, D and E seem like the correct choices for the purpose of ANonce and SNonce.
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Tatum
11 months ago
I agree, option C does sound strange. D and E make more sense.
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Elroy
1 year ago
I agree, they help in avoiding sending unicast encryption keys over the wireless medium.
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Antonio
1 year ago
I think the purpose of ANonce and SNonce is to create dynamic keys.
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Lashunda
1 year 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
1 year 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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Geraldo
1 year ago
It's important to understand the purpose of ANonce and SNonce in the 4-way handshake process.
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Odette
1 year ago
Yes, the nonces play a key role in creating dynamic keys without the need to send encryption keys over the air.
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Alishia
1 year ago
I agree, D and E are the correct answers. The nonces are crucial for deriving the PTK.
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