Chapter 3 Review SEC330 Questions and Answers
CCMP/AES encryption adds an extra of overhead to the body of an 802.11 data frame.
A.
CCMP/AES encryption will add an extra 16 bytes of overhead to the body of an 802.11 data frame. Eight bytes are added by the CCMP header and 8 bytes are added by th...
Chapter 3 Review SEC330 Questions
and Answers
CCMP/AES encryption adds an extra of overhead to the body of an 802.11 data frame.
- answer A.
CCMP/AES encryption will add an extra 16 bytes of overhead to the body of an 802.11
data frame. Eight bytes are added by the CCMP header and 8 bytes are added by the
MIC. WEP encryption will add an extra 8 bytes of overhead to the body of an 802.11
data frame. When TKIP is implemented, because of the extra overhead from the
extended IV and the MIC, a total of 20 bytes of overhead is added to the body of an
802.11 data frame.
TKIP/ARC4 encryption adds an extra of overhead to the body of an 802.11 MPDU. -
answer C.
When TKIP is implemented, because of the extra overhead from the extended IV and
the MIC, a total of 20 bytes of overhead is added to the body of an 802.11 MPDU.
CCMP/AES encryption will add an extra 16 bytes of overhead to the body of an 802.11
MPDU. WEP encryption will add an extra 8 bytes of overhead to the body of an 802.11
MPDU.
An HT client STA is transmitting to an HT AP using modulation and coding scheme
(MCS) #12 that defines 16‐QAM modulation, two spatial streams, a 40‐MHz bonded
channel, and an 800 ns guard interval to achieve a data rate of 162 Mbps. According to
the IEEE, which types of encryption should be used by the HT client STA? (Choose all
that apply.) - answer D.
The IEEE 802.11n amendment states that an HT station should not use WEP or TKIP
when communicating with other STAs that support stronger ciphers. HT STAs should
not use pre-RSNA security methods to protect unicast frames if the RA or address 1 of
the
Chapter 3: Encryption Ciphers and Methods 559
frame corresponds to an HT STA. On September 1, 2009, the Wi-Fi Alliance also began
requiring that all HT radios (802.11n) not use TKIP when using HT data rates. TKIP is
also not supported for VHT radios (802.11ac) when using VHT data rates.
CCMP/AES uses a temporal key and encrypts data in blocks. - answer A.
The AES algorithm is de ned in FIPS PUB 197-2001. All AES processing used within
CCMP uses AES with a 128-bit key and a 128-bit block size.
When using an encryption suite that implements an asymmetric algorithm, which of the
fol- lowing statements is true? (Choose all that apply.) - answer C, D.
Asymmetric algorithms use a pair of keys—a private key that is used for decryption and
a public key that is used for encryption. Asymmetric algorithms generally require more
computer processing power than symmetric algorithms.
The benefits of buying summaries with Stuvia:
Guaranteed quality through customer reviews
Stuvia customers have reviewed more than 700,000 summaries. This how you know that you are buying the best documents.
Quick and easy check-out
You can quickly pay through credit card or Stuvia-credit for the summaries. There is no membership needed.
Focus on what matters
Your fellow students write the study notes themselves, which is why the documents are always reliable and up-to-date. This ensures you quickly get to the core!
Frequently asked questions
What do I get when I buy this document?
You get a PDF, available immediately after your purchase. The purchased document is accessible anytime, anywhere and indefinitely through your profile.
Satisfaction guarantee: how does it work?
Our satisfaction guarantee ensures that you always find a study document that suits you well. You fill out a form, and our customer service team takes care of the rest.
Who am I buying these notes from?
Stuvia is a marketplace, so you are not buying this document from us, but from seller Pogba119. Stuvia facilitates payment to the seller.
Will I be stuck with a subscription?
No, you only buy these notes for $10.99. You're not tied to anything after your purchase.
