ACMA Mobility Solutions 5 — Questions and Answers
Question 1: What is the purpose of Aruba's 'band steering' feature?
- To prioritize 5 GHz-capable clients over 2.4 GHz to reduce congestion (Correct answer)
- To increase the power output of the 2.4 GHz radio
- To assign different SSIDs to each frequency band
- To block 2.4 GHz clients from connecting
Correct answer: To prioritize 5 GHz-capable clients over 2.4 GHz to reduce congestion
Band steering encourages dual-band clients to connect on the less-congested 5 GHz band by delaying or suppressing probe responses on 2.4 GHz.
Question 2: In Aruba ClearPass Policy Manager, what is an 'Enforcement Profile' used for?
- Defining RADIUS server IP addresses
- Specifying what access or attributes to grant after a policy match (Correct answer)
- Scheduling posture checks on endpoints
- Configuring 802.1X supplicant settings on clients
Correct answer: Specifying what access or attributes to grant after a policy match
An Enforcement Profile defines the RADIUS attributes, VLAN, or role to be returned to the NAS device when a Policy Manager rule is matched.
Question 3: Which Aruba AP operating mode allows an AP to simultaneously serve clients AND monitor the RF spectrum for threats?
- Dedicated monitor mode
- Hybrid monitor mode (am-mode with serving)
- Hybrid AP mode (Correct answer)
- Spectrum analyzer mode
Correct answer: Hybrid AP mode
Hybrid AP mode lets an Aruba AP serve clients on one radio while using the other radio for air monitoring and WIDS functions simultaneously.
Question 4: What is the purpose of the CAPWAP protocol in Aruba campus AP deployments?
- To provide IPsec encryption between APs
- To carry control and data traffic between APs and the Mobility Controller (Correct answer)
- To perform 802.1X authentication for clients
- To synchronize time between APs using NTP
Correct answer: To carry control and data traffic between APs and the Mobility Controller
CAPWAP (Control and Provisioning of Wireless Access Points) is the standardized protocol Aruba uses to carry both control messages and optionally data traffic between APs and controllers.
Question 5: In Aruba Instant, if the Virtual Controller fails, what happens to client connectivity?
- All clients are immediately disconnected and cannot reconnect
- A new Virtual Controller is automatically elected and clients experience minimal disruption (Correct answer)
- Clients fall back to using the RADIUS server directly
- The network reverts to standalone AP mode with no SSIDs
Correct answer: A new Virtual Controller is automatically elected and clients experience minimal disruption
If the Virtual Controller fails, the remaining IAPs hold an election to select a new Virtual Controller, restoring cluster management with minimal disruption to connected clients.
Question 6: Which Aruba feature uses application identification to prioritize or block specific app traffic on the wireless network?
- RFProtect
- AirMatch
- AppRF (Correct answer)
- ClientMatch
Correct answer: AppRF
AppRF uses deep packet inspection to classify application traffic and allows administrators to apply QoS, rate limiting, or blocking policies per application.
Question 7: What distinguishes an Aruba 'AP group' from an individual AP configuration in the Mobility Controller?
- AP groups are used only for mesh deployments
- AP groups allow common configuration (SSIDs, radio settings) to be applied to multiple APs simultaneously (Correct answer)
- AP groups are required for 802.11ax support
- AP groups define geographic coverage areas for RF planning
Correct answer: AP groups allow common configuration (SSIDs, radio settings) to be applied to multiple APs simultaneously
AP groups act as templates on the Mobility Controller, letting administrators define shared SSIDs, radio profiles, and policies that apply to all APs assigned to the group.
ACMA Mobility Solutions 5
What is the purpose of Aruba's 'band steering' feature?