Module 9

Question 1

What is the security level in 802.11 ?

Answer 1

basic to high
SSID or ESSID
WEP
TKIP (WPA 1)
CCMP(WPA 2)

Question 2

what is the Weakness of SSID ?

Answer 2

SSID can be sniffed

Mac address can be spoofed

Question 3

What security goals WEP achieved ?

Answer 3

confidentiality, access control, integrity and authentication

Question 4

What kind of key WEP use for encryption and authentication between clients and access point ?

Answer 4

shared secret key

key size 40 bits or 104 bits

Question 5

What are the weakness of WEP list 5 ?

Answer 5

1. shared secret key: every user use same key
2. static key: key not change unless manually change
3. IV in plain text
4. size of IV is 24 bits
5. one-way authentication

Question 6

What are the two weakness of TKIP ?

Answer 6

1. one- way authentication

2. management frame not protected

Question 7

What are the three parties involved in the authentication and key management procedure in 3G cellular networks?

Answer 7

USIM card
VLR: visitor location register
AuC: authentication centre