ACP Network Management and Troubleshooting 2

Question 1

An Aruba controller shows that an AP is in 'ip-assigned' state but never reaches 'up' state. What is the most likely cause?

Accepted Answer

The PAPI communication between AP and controller is being blocked by a firewall

Answer

PAPI (UDP 8211) must be open between the AP and controller; blocking it prevents the AP from completing its bootstrap beyond ip-assigned.

Question 2

When using Aruba Central, which feature allows administrators to run CLI commands on multiple APs simultaneously without opening individual SSH sessions?

Accepted Answer

Device Bulk Actions / Remote Console

Answer

Aruba Central's Device Bulk Actions (Remote Console) lets admins execute CLI commands across multiple devices in a single operation.

Question 3

A network admin notices high retry rates on a 5 GHz SSID. Which Aruba AirMatch or ARM feature should be tuned first to address co-channel interference?

Accepted Answer

Channel and transmit power reoptimization interval

Answer

Reducing the AirMatch/ARM reoptimization interval allows the system to reassign channels and power levels more frequently to resolve interference.

Question 4

In Aruba ClearPass, which log file is most useful for diagnosing a failed 802.1X authentication attempt?

Accepted Answer

Access Tracker under Monitoring

Answer

Access Tracker in ClearPass provides real-time and historical authentication request details, including failure reasons and policy evaluation steps.

Question 5

A customer reports that clients connected to an Aruba AP can reach the internet but not internal servers after a VLAN reconfiguration. What should be verified first?

Accepted Answer

AP group SSID VLAN tagging and upstream trunk port configuration

Answer

Mismatched VLAN tagging between the AP/controller SSID profile and the upstream switch trunk port is the most common cause of selective connectivity loss after VLAN changes.

(ACP) Aruba Certified Professional Certification Practice Test

(ACP) Aruba Certified Professional Certification Practice Test

ACP Network Management and Troubleshooting 2