ACMA Controller Architecture 4

Question 1

Which Aruba controller redundancy mechanism ensures active AP sessions are maintained during a controller failover?

Accepted Answer

Hot standby with state synchronization

Answer

Aruba controller clustering uses state synchronization to maintain active AP and client sessions during failover without requiring re-association.

Question 2

What is the maximum number of controllers that can form an Aruba controller cluster?

Accepted Answer

4

Answer

An Aruba controller cluster supports up to 4 controllers sharing AP load and client state for redundancy and scalability.

Question 3

Which Aruba controller feature provides RF spectrum analysis to identify non-Wi-Fi interference sources?

Accepted Answer

Spectrum Analysis

Answer

Spectrum Analysis on Aruba APs (with compatible hardware) identifies non-802.11 interference sources such as microwave ovens and Bluetooth devices.

Question 4

In Aruba's controller architecture, which table maps client MAC addresses to their associated AP and controller?

Accepted Answer

User table

Answer

The controller's user table tracks each wireless client's MAC, IP, role, AP association, and authentication state.

Question 5

What is the role of the PEFNG (Policy Enforcement Firewall Next Generation) license in Aruba controllers?

Accepted Answer

Enable stateful user-based firewall and role-based access control

Answer

The PEFNG license unlocks stateful firewall policies, user roles, and application-layer inspection capabilities on the controller.

(ACMA) Aruba Certified Mobility Associate Practice Test