ACMA Controller Architecture 2 — Questions and Answers
Question 1: Which Aruba Mobility Controller model is designed specifically for branch office deployments with limited power and space?
- MC-VA
- 7005 (Correct answer)
- 7210
- 7240XM
Correct answer: 7005
The 7005 is Aruba's entry-level hardware controller suited for small branch offices with minimal footprint requirements.
Question 2: In an Aruba controller-based WLAN, which protocol do APs use to communicate with the controller?
- SNMP
- CAPWAP (Correct answer)
- LWAPP
- SSH
Correct answer: CAPWAP
CAPWAP (Control and Provisioning of Wireless Access Points) is the standard protocol used for AP-to-controller communication in Aruba deployments.
Question 3: What is the primary role of the Mobility Master (MM) in an Aruba Mobility Master-based architecture?
- Terminate user traffic
- Provide centralized policy and configuration management (Correct answer)
- Act as a RADIUS server
- Serve as the DHCP server for APs
Correct answer: Provide centralized policy and configuration management
The Mobility Master provides centralized configuration, policy management, and visibility across all Mobility Controllers in the hierarchy.
Question 4: Which Aruba controller component is responsible for enforcing firewall policies on user traffic?
- ARM
- Policy Enforcement Firewall (PEF) (Correct answer)
- AirMatch
- UCC
Correct answer: Policy Enforcement Firewall (PEF)
The Policy Enforcement Firewall (PEF) module on the controller inspects and enforces stateful firewall policies on wireless user traffic.
Question 5: In a hierarchical Aruba deployment, a Managed Device (MD) refers to which component?
- An IAP cluster
- A Mobility Controller managed by Mobility Master (Correct answer)
- An AP in campus mode
- A ClearPass server
Correct answer: A Mobility Controller managed by Mobility Master
A Managed Device is a Mobility Controller that receives its configuration and policies from a Mobility Master.
Question 6: What happens to wireless client traffic when an Aruba AP operates in tunnel mode?
- Traffic is bridged locally at the AP
- Traffic is encrypted and tunneled to the controller (Correct answer)
- Traffic is sent directly to the internet via the local gateway
- Traffic is processed by a cloud broker
Correct answer: Traffic is encrypted and tunneled to the controller
In tunnel mode, the AP encapsulates all client traffic in a GRE or CAPWAP tunnel and forwards it to the Mobility Controller for processing.
Question 7: Which Aruba architecture allows APs to switch client traffic locally without sending it to a central controller?
- Centralized forwarding
- Distributed forwarding (split-tunnel or bridge mode) (Correct answer)
- MC-VA mode
- Remote AP tunnel mode
Correct answer: Distributed forwarding (split-tunnel or bridge mode)
Distributed forwarding (bridge or split-tunnel mode) allows APs to switch some or all client traffic locally, reducing WAN bandwidth consumption.
ACMA Controller Architecture 2
Which Aruba Mobility Controller model is designed specifically for branch office deployments with limited power and space?