Controller Architecture Flashcards
7 cards from real ACMA practice questions. Tap to flip, then mark Knew It or Still Learning โ missed cards come back until you master them.
Read the first 7 Controller Architecture flashcards as text
Which Aruba controller redundancy mechanism ensures active AP sessions are maintained during a controller failover?
Answer: Hot standby with state synchronization
Aruba controller clustering uses state synchronization to maintain active AP and client sessions during failover without requiring re-association.
What is the maximum number of controllers that can form an Aruba controller cluster?
Answer: 4
An Aruba controller cluster supports up to 4 controllers sharing AP load and client state for redundancy and scalability.
Which Aruba controller feature provides RF spectrum analysis to identify non-Wi-Fi interference sources?
Answer: Spectrum Analysis
Spectrum Analysis on Aruba APs (with compatible hardware) identifies non-802.11 interference sources such as microwave ovens and Bluetooth devices.
In Aruba's controller architecture, which table maps client MAC addresses to their associated AP and controller?
Answer: User table
The controller's user table tracks each wireless client's MAC, IP, role, AP association, and authentication state.
What is the role of the PEFNG (Policy Enforcement Firewall Next Generation) license in Aruba controllers?
Answer: Enable stateful user-based firewall and role-based access control
The PEFNG license unlocks stateful firewall policies, user roles, and application-layer inspection capabilities on the controller.
Which Aruba controller CLI command displays the list of currently associated APs?
Answer: show ap active
The 'show ap active' command lists all APs currently associated with the controller along with their status and AP group.
In Aruba's architecture, an AP group is used to:
Answer: Apply a common set of virtual AP profiles and RF settings to multiple APs
AP groups allow administrators to apply consistent virtual AP, RF, and system profiles to a collection of APs, simplifying large-scale management.