Pass the HPE Networking HPE6-A90 Questions and answers with Dumpstech

Technical explanation

Loop protection can emit and detect dedicated loop-detection frames on ports where spanning-tree participation is unavailable or inappropriate. When the device sees its loop-detection traffic return, it can disable or otherwise isolate the problem interface according to configured action and recovery behavior. BPDU Guard requires reception of spanning-tree BPDUs; a loop formed between two ordinary edge ports or through a device that does not emit BPDUs can evade that trigger. Define recovery policy to avoid repeated flapping into an unresolved loop.

LACP bundles links but is not a general defense against accidental edge patch loops. BPDU Guard reacts to received BPDUs; a silent loop can bypass it. Loop protection tests for loopback behavior itself.

Official HPE references | Creating a Port Profile for Switches • Step 3—Configuring VLANs and Port Profiles | Study-guide topic: Managing Wired Networks with HPE Aruba Networking Central

Technical explanation

The timeline allows metrics and events to be viewed within the same historical period as the reported slowdown, making temporal correlation possible. Compare interface throughput, link errors, CPU alarms, client health and configuration changes for the chosen window. A coincident alert is only a lead; corroborate a causative relationship through device counters or reproducible symptoms. The Hardware card is best for component condition, and the Connectivity card may expose the metrics, but the time-range widget is what makes historical comparison practical.

Hardware inventory does not reveal the past throughput curve. Connectivity data is useful only when viewed at the required period; the Timeline widget is the explicit control for changing the observation window.

Official HPE references | Device Health Card • Troubleshooting Tools | Study-guide topic: Managing Wired Networks with HPE Aruba Networking Central

Technical explanation

An 802.1Q trunk must interpret untagged frames consistently at both ends. Matching native VLAN configuration prevents an untagged frame from being mapped to different VLANs across the link. Also compare the allowed VLAN list, tagged/untagged treatment and whether the platform tags the native VLAN by explicit policy. Symmetric tagging may be valid as a separate design decision, but it is not a substitute for agreement on VLAN semantics. Test management and user reachability after any trunk change to detect silent VLAN leakage or blackholing. Native VLAN is a deliberate configuration, not something the switch dynamically chooses from broadcasts. Using different native VLANs can leak untagged traffic into unintended segments. Tagging the native VLAN on both sides is a separate compatible design, not the general consistency rule the question tests.

Official HPE references | Creating a VLAN Profile • Step 3—Configuring VLANs and Port Profiles | Study-guide topic: Managing Wired Networks with HPE Aruba Networking Central

Technical explanation

Split-detection mechanisms determine which VSF fragment may continue forwarding after stacking-link partition, preventing two active control domains from advertising identical management identities or gateway addresses. On supported 6200/6300 families, management ports participate in detection; certain 4100i/6100 platforms instead use a dedicated MAD VLAN with front-plane ports. The standby fragment can disable non-VSF ports when the conductor fragment remains active. MC-LAG design does not solve a split-brain event inside a VSF stack, and daisy-chain topology offers less fault tolerance than a ring where supported.

MC-LAG applies to multichassis link aggregation, not detecting a partitioned VSF stack. A daisy chain may create a single break point rather than preventing split brain. VSF split detection is built for isolating dangerous dual-active fragments.

Official HPE references | VSF Profile • VSF Split Detection | Study-guide topic: Managing Wired Networks with HPE Aruba Networking Central

Technical explanation

AirWave was a traditional network management and monitoring product, whereas Central consolidates broader cloud-native configuration, lifecycle management, AI insight and cross-domain operations. A migration requires checking device support, licensing, configuration equivalence and historical monitoring requirements rather than assuming a simple database replacement. ClearPass continues to provide policy and AAA services where deployed, and Mobility Controllers or gateways participate in wireless traffic forwarding; these products are not the legacy management software intended by the question. ClearPass remains an access-policy/AAA product; a Mobility Controller or VPN concentrator forwards or terminates traffic. AirWave is the legacy network-management platform whose visibility and operations Central supersedes for supported deployments.

Official HPE references | Planets in Global Monitoring Page • HPE Aruba Networking Unified Infrastructure - Solution Overview | Study-guide topic: Network Management with HPE Aruba Networking Central

Technical explanation

Developer Hub provides API documentation and a live request facility. After choosing an endpoint, an operator can supply an access token and cluster and execute the API call. A GET may simply read telemetry; a write-capable request with the right privileges can modify cloud-managed objects or configuration. For that reason, the portal must be handled with the same safeguards as a production automation client. HPE’s API FAQ expressly describes execution of API calls from the API Reference page.

The sample-code-only claim in B is contradicted by the authenticated “try out” workflow. C is equally misleading: calls are real requests, although only a write-capable endpoint changes configuration. Option A therefore needs that HTTP-method qualification.

Official HPE references | Application Programming Interface (API) FAQ • Multi-Level Hierarchy | Study-guide topic: Network Management with HPE Aruba Networking Central

Technical explanation

The network overview provides initial orientation: overall sites, client health, device condition, active alerts and operational issues requiring follow-up. It supports a drill-down workflow from high-level impact to individual sites and devices. Inventory and licensing are specialized administration views; neither is a comprehensive home dashboard for network state. Operators should confirm selected tenant and workspace because administrative context determines which sites and subscriptions are visible after launching Central from GreenLake.

The subscriptions page is an administrative entitlement view, alerts show exceptions, and inventory shows the device roster. Network overview is the broader landing context for health, sites, clients, and conditions needing investigation.

Official HPE references | Planets in Global Monitoring Page • Device Health Card | Study-guide topic: Network Management with HPE Aruba Networking Central

Technical explanation

DPI identifies traffic according to application signatures and behavioral characteristics beyond traditional IP-address, port and protocol matches. That classification enables role-based rules and QoS decisions for applications such as collaboration, streaming or file sharing, even when services reuse common transport ports. DPI should not be equated with universal SSL interception; decryption requires separate, explicit capabilities and trust arrangements. Nor does it perform DHCP address allocation or Wi-Fi channel selection, which belong to different network subsystems.

DHCP relaying and RF channel selection are separate functions. Decrypting arbitrary SSL traffic is not implied by DPI; that would require additional TLS-interception capabilities and trust. DPI is useful because recognized application identities can be inputs to traffic policy.

Official HPE references | Application Visibility • AOS-10 Cloud Services | Study-guide topic: Introduction to AOS-10

Technical explanation

AOS-10 APs send operating state, radio channel and transmit-power parameters, RF noise/retry indicators, client counts and related performance telemetry to Central. Analytics services aggregate these measurements for RF optimization, health scoring, anomaly detection and troubleshooting. Authentication secrets are not normal monitoring telemetry, and AP reporting is not a replacement for extracting arbitrary upstream router tables. When connectivity to Central is disrupted, APs can continue their currently applied forwarding and RF plans, although cloud-dependent optimizations may be delayed. A useful operational validation is to compare AP-reported RF counters and connectivity status before and after a known interference or availability event. The resulting time-series permits trend diagnosis without copying authentication credentials into the management platform.

DHCP lease information and learned routes can exist elsewhere in the topology but are not the defining AOS-10 AP telemetry category. Secret authentication material is not a routine performance-telemetry feed. Radios report operational metrics used in health and RF decisions.

Official HPE references | AOS-10 Cloud Services • Roaming and the Key Management Service | Study-guide topic: Introduction to AOS-10

Technical explanation

The licensing distinction must be read against the actual entitlement matrix, not assumed from feature names. HPE lists base AI Insights under Foundation, while its official Classic Central AP license table lists Unified Communications and Collaboration (UCC) and Live Upgrades under Advanced. UCC visibility concerns voice/video collaboration experience; Live Upgrade is a firmware-maintenance orchestration capability. The test’s answer key singles out UCC, but the wording admits another Advanced-only selection in that documented matrix.

The Foundation license includes AI Insights, making C ineligible as an Advanced-only distinction. However, HPE’s official Classic Central license table places both UCC and Live Upgrades in the Advanced column. Accordingly, A is the supplied key but B also satisfies the literal wording; the question is not unambiguous as a single-choice item.

Source-specific qualification: HPE’s AP Foundation and Advanced License table places both UCC and Live Upgrades under Advanced. A single-answer interpretation of this question therefore requires the intended curriculum/release context.

Official HPE references | AP Foundation and Advanced License – HPE Aruba Networking Central • Dynamic Application Prioritization Profile | Study-guide topic: Introduction to AOS-10