HPE6-A90 Exam Dumps - HPE Networking Questions and Answers

Technical explanation

Design overlapping coverage cells such that a client can detect and associate to an alternative AP if a neighbor fails. Validate the secondary AP's signal strength, channel availability and capacity under a failure scenario rather than relying on a fixed overlap percentage. Survey from client height and account for wall attenuation, antenna patterns and voice-roaming requirements. Setting maximum EIRP everywhere tends to enlarge contention domains, while forcing all radios onto one channel undermines spatial reuse and reliable failover.

A single shared channel causes more co-channel contention, not resilient coverage. Maximum transmit power may make APs visible from farther away while clients still lack a viable return link. Redundancy requires usable neighboring coverage with capacity to absorb failures.

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

Technical explanation

When many access ports share the same traffic role, centrally define admin state, speed/MTU, access or trunk VLAN mode, QoS, authentication and protection in a reusable Port Profile. Association of that profile with the desired interfaces yields repeatable intent and easier compliance inspection. Separate templates should be maintained for users, voice/phones, printers and uplinks where the behavior differs. A unique or short-lived diagnostic change on one port does not justify broad profile reuse and may cause unintended outages if inherited. Under Configuration > Interfaces > Port Profile, use Create profile for the shared baseline and assign it to eligible switch interfaces.

A unique uplink or a temporary lab change needs local handling rather than a shared policy object. Reading counters and LLDP is a monitoring task, not a profile-deployment task. Profiles pay off when many ports must share a stable baseline.

Official HPE references | Creating a Port Profile for Switches • Creating a VLAN Profile | Study-guide topic: Managing Wired Networks with HPE Aruba Networking Central

Technical explanation

Troubleshooting History preserves the session identifier, device context, executed test and results so a diagnostic run can be compared with earlier observations. Operators can export relevant records for incident notes or maintenance evidence. Historical tests reveal changes in latency, reachability or cable status, whereas an audit trail primarily records who performed an action and when. Retention is version-dependent, so export sessions that must survive the platform's history window and record the requested time range in the incident ticket. From a site, open Network, select the device, launch Troubleshoot, then choose History to reopen earlier sessions.

Audit Trail answers who changed configuration; it is not the archive of test output. A Network overview Events card records network events, not earlier diagnostic command results. History in Troubleshoot is where a second engineer retrieves a prior session.

Official HPE references | Troubleshooting Tools • Troubleshooting History | Study-guide topic: Network Management with HPE Aruba Networking Central

Technical explanation

Anomaly detection compares observed telemetry against baselines rather than relying exclusively on static thresholds. Recurrent association failures, unusual RF retries, interface errors and abnormal device restarts can then be surfaced before incident volume grows. AI Insights should be treated as a prioritized diagnostic hypothesis: verify affected sites and devices, inspect contributing evidence, and implement a controlled corrective change. Not every recommendation is executed automatically; change control and operational ownership remain with administrators.

B reduces the platform to ticket creation, ignoring telemetry correlation and recommendations. C incorrectly portrays hardware replacement as a standard autonomous step. Engineers still assess whether an insight points to RF conditions, authentication, software, or failing hardware.

Official HPE references | AirMatch • AOS-10 Cloud Services | Study-guide topic: Network Management with HPE Aruba Networking Central

Technical explanation

Configure a VSX LAG on both core peers and a matching LACP bundle on the access switch. The logical LAG can use available links to both core chassis simultaneously without ordinary spanning-tree blocking one of the uplinks. A peer failure leaves the remaining physical member operational provided the access switch and VLAN design are correct. Ensure consistent VLAN tagging, LACP parameters and an adequately designed VSX ISL/keepalive. Independent VLANs do not offer equivalent transparent redundancy, and static routes cannot replace a Layer 2 aggregated access uplink. With one member to each VSX core, an access switch can forward across both links. If one core fails, the LAG retains the surviving member instead of waiting for STP to unblock a redundant standalone trunk.

Putting each uplink into different access VLANs is segmentation, not a shared resilient bundle. Static routes to an access switch do not aggregate the pair’s L2 member links. A VSX LAG presents a logical LACP endpoint spanning the two cores.

Official HPE references | VSX and VSF Connectivity Design - Validated Solution Guide • Creating a VSX Pair | Study-guide topic: Managing Wired Networks with HPE Aruba Networking Central

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

Create a VSX pair in the aggregation tier and a VSX LAG/MC-LAG extending to each aggregation member, while the access stack uses LACP toward the two peers. The access device sees a single logical bundle even though the links terminate on different chassis. Correct ISL, peer keepalive, VLAN membership and LACP settings are essential for deterministic failover. Separate unaffiliated access ports force spanning-tree or routed-design considerations and do not deliver the same active-active link aggregation behavior.

Two independent access ports are not an LACP bundle across two chassis. Making a separate VRF for each link only isolates routing state. VSX with a multi-chassis LAG supports forwarding on both uplinks while preserving peer independence. For acceptance, disconnect each upstream aggregation peer in turn and confirm the LACP bundle remains up on the other peer. An undersized VSX ISL or incorrectly routed keepalive can defeat the intended resilience.

Official HPE references | VSX and VSF Connectivity Design - Validated Solution Guide • Creating a VSX Pair | Study-guide topic: Managing Wired Networks with HPE Aruba Networking Central

Technical explanation

Each VRF owns its own forwarding and routing table, allowing Guest, IoT and Employee segments to use separate default routes and route-import policies on supported switches. Associate the corresponding SVIs or routed interfaces with the intended VRF and control any deliberate inter-VRF leakage through explicit security mechanisms. An SVI on its own creates a Layer 3 interface but not an independent routing domain. Check DHCP relay, DNS access and upstream reachability per VRF, because control-plane separation does not automatically provision the services that each tenant needs. Where guest must reach a shared DNS server, use deliberate inter-VRF route leaking or firewall-controlled service access. A VRF does not automatically create a permitted path between tenant routing tables.

Routed interfaces by themselves do not establish separate routing-table instances. A single shared SVI profile cannot isolate tenant RIBs. Multiple VRFs create independent forwarding tables, with carefully controlled route leaking if cross-tenant access is required.

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

RBAC separates identity, the abstract permission set and the resources to which those rights apply. Create roles with explicit privileges, assign those roles to users or groups and restrict scope to authorized sites or device functions. Users inherit privileges from their role membership; network devices do not inherit user access permissions from a 'role assignment' in the same sense. Validate least privilege using a test operator account rather than giving broad administrator rights simply to resolve visibility issues. In option A, devices incorrectly inherit the operator permissions. Option B attaches permissions to individual users rather than roles. Option C conflates equipment ownership with authorization. Mapping privileges to roles and roles to users is the RBAC principle.

Official HPE references | Multi-Level Hierarchy • HPE Aruba Networking Unified Infrastructure - Solution Overview | Study-guide topic: Network Management with HPE Aruba Networking Central

Technical explanation

VSX preserves independent control planes and distinct management endpoints for the two aggregation peers while coordinating shared L2 behavior and downstream multi-chassis LAGs. Test failures of the ISL, keepalive path and one switch separately, because their protective actions are not identical. Static routing between unrelated switches supplies reachability but not the paired logical aggregation capabilities requested. VSF is suitable for a single-control-plane stack, but that is the opposite of the independent-control-plane design requirement. Split-brain handling, peer keepalive and ISL loss are distinct failure cases; the design review should document all three rather than assuming a single “core failed” test covers VSX behavior.

Static routes alone do not supply MC-LAG-like dual-attached switching, and VSF deliberately shares its stack control plane. VSX retains two independently managed systems and coordinates their high-availability role.

Official HPE references | VSX and VSF Connectivity Design - Validated Solution Guide • Creating a VSX Pair | Study-guide topic: Managing Wired Networks with HPE Aruba Networking Central