ACMA Access Point Deployment 5 — Questions and Answers
Question 1: What is the purpose of configuring an AP's 'LMS IP' (Local Management Switch) during deployment?
- To define the VLAN for management traffic
- To specify the primary controller the AP should connect to (Correct answer)
- To set the IP address of the local network switch
- To configure the NTP server for the AP
Correct answer: To specify the primary controller the AP should connect to
The LMS IP tells the AP which controller to contact first for management, enabling directed controller discovery without relying solely on DHCP option 43.
Question 2: An Aruba AP deployed outdoors begins experiencing interference from a neighboring business's Wi-Fi network on channel 6. Which ARM feature should resolve this automatically?
- Client match
- Channel quality monitoring with automatic reassignment (Correct answer)
- Band steering
- Airtime fairness
Correct answer: Channel quality monitoring with automatic reassignment
ARM continuously monitors channel quality and automatically reassigns the AP to a less congested channel when interference is detected.
Question 3: What happens to an Aruba IAP (Instant AP) cluster when the Virtual Controller AP fails?
- All APs in the cluster stop serving clients until the VC recovers
- The cluster elects a new Virtual Controller automatically (Correct answer)
- APs revert to standalone mode with no shared configuration
- A backup controller must be manually promoted
Correct answer: The cluster elects a new Virtual Controller automatically
Aruba Instant AP clusters automatically elect a new Virtual Controller from the remaining APs, ensuring seamless continuity.
Question 4: Which deployment consideration is most important when mounting an Aruba AP on a metal ceiling grid?
- Using an isolation mount to prevent RF reflection from the grid (Correct answer)
- Enabling 2.4 GHz only to penetrate metal better
- Increasing beacon interval to compensate for signal loss
- Connecting the metal grid to the AP's ground port
Correct answer: Using an isolation mount to prevent RF reflection from the grid
An isolation mount (mounting bracket with non-metallic standoff) prevents the AP's internal antennas from being detuned by the metal ceiling grid.
Question 5: During a post-deployment validation, an AP shows correct association but clients report slow throughput. Which metric should be checked first?
- AP uptime in the controller dashboard
- Channel utilization and retry rates on the AP radio (Correct answer)
- Number of VLANs configured on the AP
- DHCP lease time for wireless clients
Correct answer: Channel utilization and retry rates on the AP radio
High channel utilization and elevated retry rates indicate RF congestion or interference that directly degrades client throughput.
Question 6: What Aruba deployment feature allows different SSIDs on the same AP to be forwarded to different upstream VLANs?
- VLAN pooling
- Per-SSID VLAN mapping (Correct answer)
- Dynamic VLAN assignment via RADIUS
- GRE tunnel per SSID
Correct answer: Per-SSID VLAN mapping
Per-SSID VLAN mapping assigns each SSID to a specific upstream VLAN, enabling traffic segmentation from a single AP.
Question 7: An organization deploys Aruba APs in a hospital where medical devices use 802.11b at 2.4 GHz. What AP configuration protects performance for newer clients while maintaining compatibility?
- Disable 2.4 GHz radio entirely on all APs
- Enable 802.11b protection mechanisms and set minimum basic rate to 5.5 Mbps (Correct answer)
- Set minimum basic rate to 1 Mbps to include all legacy devices
- Enable band steering to move all clients to 5 GHz
Correct answer: Enable 802.11b protection mechanisms and set minimum basic rate to 5.5 Mbps
Setting the minimum basic rate to 5.5 Mbps excludes the slowest 802.11b rates while protection mechanisms accommodate remaining legacy devices.
ACMA Access Point Deployment 5
What is the purpose of configuring an AP's 'LMS IP' (Local Management Switch) during deployment?