CCIE CCIE Enterprise Wireless 3

Question 1

Which protocol is used for centralized AAA authentication in Cisco wireless deployments?

Accepted Answer

RADIUS

Answer

RADIUS is the standard protocol used for AAA (Authentication, Authorization, Accounting) in wireless deployments, including 802.1X authentication.

Question 2

In 802.11 OFDMA (used in Wi-Fi 6), what are the sub-channel allocations called?

Accepted Answer

Resource Units (RUs)

Answer

OFDMA divides the channel into Resource Units (RUs), which are groups of subcarriers that can be allocated to different clients simultaneously.

Question 3

What is the primary benefit of Target Wake Time (TWT) in 802.11ax for IoT devices?

Accepted Answer

Scheduled wake/sleep cycles for improved battery life

Answer

TWT allows APs to schedule specific wake times for clients, enabling IoT devices to sleep longer and significantly extend battery life.

Question 4

Which Cisco wireless architecture mode requires the WLC to handle all client data traffic through the controller?

Accepted Answer

Local mode (centralized)

Answer

In Local (centralized) mode, all client data traffic is tunneled through CAPWAP to the WLC, which then forwards it to the network.

Question 5

What does the Cisco Hyperlocation feature use to achieve sub-meter location accuracy?

Accepted Answer

Angle of Arrival (AoA) with dedicated antenna arrays

Answer

Cisco Hyperlocation uses Angle of Arrival (AoA) measurements from a specialized antenna module to achieve sub-meter location accuracy.

CCIE - Cisco Certified Internetwork Expert Practice Test