In a Cisco Unified Wireless Network environment, which two of these are required in order for
clients to connect with MCS data rates? (Choose two.)
A.
EDCF
B.
client MFP
C.
multiple spatial streams
D.
AES-CCMP
E.
40-MHz channels
which two of these are required in order for clients to connect with MCS data rates?
In a Cisco Unified Wireless Network environment, which two of these are required in order for
clients to connect with MCS data rates? (Choose two.)
Should be C,E
(MCS) Modulation and Coding Scheme
MCS Index: The Modulation and Coding Scheme (MCS) index determines the number of spatial streams, the modulation, the coding rate, and data rate values.
Channel Width
This is the width of the channel being used by the wireless link. 802.11n allows channel widths of 20 or 40 MHz. The rule of thumb is the wider the channel, the higher the data rate. Whilst you might be tempted to have 40MHz channels at all times, you can’t deploy them when using 2.4GHz WiFi because there are only 3 non-overlapping 20MHz channels available. Additionally, wider frequency channels are more difficult to maintain in challenging environments where RF interference is common.
Spatial Streams
Currently, the 802.11n standard allows up to 4 spatial streams using MIMO technology. At a simplified level, MIMO allows the same frequency space to transmit and receive multiple data streams. 802.11ac will increase the number of spatial streams from 4 to 8.