Network Management and Troubleshooting Flashcards
7 cards from real ACP practice questions. Tap to flip, then mark Knew It or Still Learning — missed cards come back until you master them.
Read the first 7 Network Management and Troubleshooting flashcards as text
Which Aruba tool provides AI-driven anomaly detection and root-cause analysis for wireless performance degradation?
Answer: Aruba AIOps in Central
Aruba AIOps (within Aruba Central) uses machine learning to detect network anomalies and provides root-cause analysis with remediation suggestions.
A technician needs to verify that OSPF adjacencies are forming correctly on an Aruba switch. Which command provides this information?
Answer: show ip ospf neighbor
'show ip ospf neighbor' displays the state of all OSPF neighbor relationships including their current FSM state (e.g., FULL, 2WAY).
In Aruba Instant (IAP) deployments, what happens to client connectivity if the Virtual Controller AP goes offline?
Answer: A new VC is automatically elected from remaining APs and clients reconnect
Aruba Instant uses an automatic VC election process; when the current VC fails, the remaining APs elect a new VC within seconds and client services resume.
Which syslog severity level should be configured to capture authentication failures without overwhelming storage with debug messages in Aruba OS?
Answer: Level 6 (Informational)
Syslog level 6 (Informational) captures authentication events and general operational messages without the volume overhead of Debug-level logging.
A roaming client on an Aruba network experiences a 2-second interruption every time it moves between APs. Which feature, when enabled, would most reduce this roaming latency?
Answer: Opportunistic Key Caching (OKC) / PMK caching
OKC (Opportunistic Key Caching) allows clients to reuse cached PMKs when roaming between APs on the same controller, eliminating the full 802.1X re-authentication delay.
Which Aruba ClearPass profiling method uses DHCP fingerprinting to identify device types?
Answer: Passive endpoint profiling through DHCP option snooping
ClearPass passively analyzes DHCP option strings (fingerprints) forwarded from network devices to classify endpoints by OS and device type without agent installation.
After upgrading Aruba controller firmware, several APs fail to rejoin and show 'cert-mismatch' in the AP debug log. What is the correct remediation?
Answer: Re-provision the controller certificate and push updated AP whitelist
A cert-mismatch error indicates the AP cannot validate the controller's certificate; re-provisioning the controller's certificate and ensuring the AP whitelist is current resolves this.