CCIE CCIE Enterprise Wireless

Question 1

Which 802.11 amendment introduced OFDMA and multi-user MIMO for the 6 GHz band?

Accepted Answer

802.11ax (Wi-Fi 6/6E)

Answer

IEEE 802.11ax (Wi-Fi 6/6E) introduced OFDMA and MU-MIMO for both uplink and downlink, with Wi-Fi 6E extending to the 6 GHz band.

Question 2

In Cisco wireless, what is the function of the CAPWAP protocol?

Accepted Answer

Providing tunnel between lightweight APs and WLC

Answer

CAPWAP (Control And Provisioning of Wireless Access Points) provides the control and data tunnel between lightweight APs and the WLC.

Question 3

What is the maximum number of spatial streams supported by 802.11ax (Wi-Fi 6)?

Accepted Answer

8

Answer

802.11ax supports up to 8 spatial streams for MU-MIMO, maintaining the same maximum as 802.11ac Wave 2.

Question 4

Which Cisco WLC feature automatically adjusts AP transmit power and channel assignment to optimize RF coverage?

Accepted Answer

RRM (Radio Resource Management)

Answer

Radio Resource Management (RRM) dynamically adjusts AP transmit power and channel assignments based on RF environment analysis.

Question 5

In 802.11 security, what protocol replaced TKIP for stronger encryption in WPA2?

Accepted Answer

AES-CCMP

Answer

AES-CCMP replaced TKIP/RC4 in WPA2, providing much stronger encryption using the AES block cipher with CCMP mode.

CCIE - Cisco Certified Internetwork Expert Practice Test