ACMA Mobility Architecture & Infrastructure 2 — Questions and Answers
Question 1: Which Aruba component acts as the central policy enforcement point in a campus WLAN deployment?
- Aruba Mobility Controller (Correct answer)
- Aruba Access Point
- AirWave
- ClearPass Policy Manager
Correct answer: Aruba Mobility Controller
The Aruba Mobility Controller enforces security policies, manages RF, and terminates client tunnels in a campus deployment.
Question 2: In Aruba's hierarchical controller architecture, what is the role of a Master Controller?
- Forwards client data to the internet
- Provides AP termination only
- Manages configuration and coordinates Local Controllers (Correct answer)
- Acts as a RADIUS server
Correct answer: Manages configuration and coordinates Local Controllers
The Master Controller pushes configuration to Local Controllers and coordinates network-wide policy and mobility.
Question 3: What protocol do Aruba APs use to communicate with the Mobility Controller in a tunnel mode deployment?
- CAPWAP (Correct answer)
- GRE over IPsec
- LWAPP
- L2TP
Correct answer: CAPWAP
Aruba APs use CAPWAP (Control And Provisioning of Wireless Access Points) to communicate control and data traffic to the controller.
Question 4: Which Aruba AP operating mode allows the AP to function without an active controller connection by caching configuration locally?
- Monitor mode
- Air monitor mode
- Survivability mode (Correct answer)
- Mesh mode
Correct answer: Survivability mode
Survivability mode lets APs continue servicing clients using a cached configuration when the controller becomes unreachable.
Question 5: In an Aruba cluster deployment, what is the primary benefit of controller clustering?
- Reduces RF interference between APs
- Enables seamless client roaming and load sharing across controllers (Correct answer)
- Provides out-of-band management
- Eliminates the need for RADIUS authentication
Correct answer: Enables seamless client roaming and load sharing across controllers
Aruba controller clustering enables zero-downtime roaming and distributes AP and client load across multiple controllers.
Question 6: Which Aruba architecture uses a cloud-managed approach where all configuration and visibility are handled via a SaaS platform?
- ArubaOS-Switch architecture
- Aruba Central architecture (Correct answer)
- Mobility Master architecture
- AirWave on-premises architecture
Correct answer: Aruba Central architecture
Aruba Central is the cloud-native SaaS platform for managing APs, switches, and gateways without on-premises controllers.
Question 7: What is the function of the Aruba Mobility Master in a large enterprise deployment?
- Terminates all client Wi-Fi associations
- Acts as a centralized management plane for Managed Devices (Correct answer)
- Serves as the primary DHCP server
- Provides RF spectrum analysis only
Correct answer: Acts as a centralized management plane for Managed Devices
Mobility Master separates the management plane from the data plane, centralizing configuration and licensing management for Managed Devices.
ACMA Mobility Architecture & Infrastructure 2
Which Aruba component acts as the central policy enforcement point in a campus WLAN deployment?