Cisco WLC v7.0 is configured on 2.4 GHz for mandatory data rates of 9 and 18 Mb/s. Data rates of 6, 12, 24, 36, 48, and 54 Mb/s are configured as supported. All other data rates are disabled. Which three results can be determined from this configuration? (Choose three.)
A. 802.11b/g/n clients are able to connect.
B. 802.11a/n clients are able to connect.
C. Clients must be able to receive packets at 18 Mb/s.
D. Clients must be able to receive packets at 9 Mb/s.
E. Broadcast and multicast packets are sent at 18 Mb/s.
F. Broadcast packets are sent at 9 Mb/s, while multicast packets are sent at 18 Mb/s.
G. Broadcast packets are sent at 18 Mb/s, while multicast packets are sent at 9 Mb/s.
A, D, E
2.4GHz 802.11g/n can connect to the network
For the wireless clients to associate to the AP, they must be able to currently receive packets at the LOWEST
mandatory rate
If more than one data rate is set to mandatory, multicast and broadcast frames are sent at the HIGHEST common mandatory transmission rate of all associated clients.
https://mrncciew.files.wordpress.com/2013/03/entbp-appmobdevs-on-wlans.pdf
But that assumes that there is no clients connected a 9Mbps. You are allowing 6Mbps as well so there is a good chance that clients will be some distance away and not everyone will be connected at min of 18mbps. Also you can note that multicast is sent at the highest COMMON mandatory rate so if someone who is on the multicast and connected at 9Mbps, then everyone will get the multicast at 9Mbps.
Lets break this down:
A. 802.11b/g/n clients are able to connect. – Possible, but 802.11b rates ARE disabled (1,2,5.5,11)
B. 802.11a/n clients are able to connect. – WRONG 5Ghz – Question states 2.4Ghz
C. Clients must be able to receive packets at 18 Mb/s. – WRONG minimum mandatory is 9 for initial connection.
D. Clients must be able to receive packets at 9 Mb/s. – Sure!
E. Broadcast and multicast packets are sent at 18 Mb/s. – WRONG , Beacons/Brodcast lowest mandatory.
F. Broadcast packets are sent at 9 Mb/s, while multicast packets are sent at 18 Mb/s. – Sure
G. Broadcast packets are sent at 18 Mb/s, while multicast packets are sent at 9 Mb/s. – WRONG as per E
So we have A, D, F (A only technically because it’s the least wrong, suspect a typo)
BDE are correct
2.4ghz is b/g/n rates.
Multicast is sent at highest mandatory rate, broadcast lowest mandatory rate.
A,D,F is correct