Which type of frames are ACK and CF-ACK?
A. control
B. management
C. RTS/CTS
D. association
Correct Answer: A
Explanation/Reference:
Explanation:
Wireless LANs come in three frame types:
Frame Types Table
Management
Control
Data
Beacon
Request to Send (RTS)
Simple data
Probe Request
Clear to Send (CTS)
Null function
Probe Response
Acknowledgment
Data+CF-ACK
Association Request
Power-Save-Poll (PS-Poll)
Data+CF-Poll
Association Response
Contention Free End (CF-End)
Data+CF-Ack
Authentication Request
Contention Free End + Acknowledgment (CF-End +ACK)
ACK+CF-Poll
Authentication Response
CF-ACK
Deauthentication
CF-ACK+CF-Poll
Reassociation request
Reassociation response
Announcement traffic indication message (ATIM)
http://www.ciscopress.com/articles/article.asp?p=1271797&seqNum=2
Explanation/Reference:
Explanation:
Wireless LANs come in three frame types:
Frame Types Table
Management
Control
Data
Beacon
Request to Send (RTS)
Simple data
Probe Request
Clear to Send (CTS)
Null function
Probe Response
Acknowledgment
Data+CF-ACK
Association Request
Power-Save-Poll (PS-Poll)
Data+CF-Poll
Association Response
Contention Free End (CF-End)
Data+CF-Ack
Authentication Request
Contention Free End + Acknowledgment (CF-End +ACK)
ACK+CF-Poll
Authentication Response
CF-ACK
Deauthentication
CF-ACK+CF-Poll
Reassociation request
Reassociation response
Announcement traffic indication message (ATIM)
http://www.ciscopress.com/articles/article.asp?p=1271797&seqNum=2