HPE6-A90 Exam Dumps - HPE Networking Central Exam

Technical explanation

If the WLAN uses EAP-TLS, validate certificate issuance, identity mapping, chain of trust, validity dates and the server certificate's extended key usage. Also verify that clients trust the RADIUS server and that the authentication backend permits the negotiated TLS version and cipher suites. WPA3-Enterprise does not inherently require EAP-TLS in every deployment; the first check depends on the actual EAP method selected. A personal-mode preshared key and captive portal are not substitutes for an enterprise 802.1X authentication exchange. A server presenting an expired leaf certificate or an intermediate CA missing from the client trust store can fail even when RADIUS reachability is healthy. Compare the EAP method negotiated by the supplicant with the authentication server policy.

A PSK is irrelevant to 802.1X enterprise key exchange. Captive portal is a web authorization stage, not an EAP-TLS handshake repair. Certificate checks are decisive only when this SSID actually uses EAP-TLS; with PEAP or another EAP method, inspect that method instead.

Official HPE references | Configuring VLAN Settings for WLAN SSID in Tunnel and Mixed Mode • AOS-10 Cloud Services | Study-guide topic: Introduction to AOS-10

Technical explanation

Run tests and, where authorized, command sessions from Troubleshooting so their timestamps, device context and results appear in History. The session record allows comparison before and after an intervention and can be exported as operational evidence. For accountability, also consult Audit Trail, which records administrative actions rather than being a substitute for diagnostic output. Preserve results externally when a regulatory or investigation retention period exceeds Central's operational history retention window. Central records troubleshooting sessions under Troubleshoot > History; select a session ID to read its outputs and any associated notes.

A configuration-change event cannot replay the output of a cable test or ping. The site timeline helps correlate incidents but is not a test archive. History contains prior sessions and can be reviewed for repeated diagnostics or handover.

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

Technical explanation

Application Visibility uses traffic classification, including DPI where supported, to show application families, usage and performance context rather than merely physical neighbors. Filter by site, wired/wireless client, time window and application category to identify misuse or policy-impacting traffic. Compare classified flows with user-role rules, access controls and QoS treatment. Encryption limits the visibility of payload contents, so classification often relies on signatures, protocol characteristics and metadata; it should not be confused with unrestricted decryption of every application session.

A topology diagram does not categorize application flows, and inventory only identifies assets. Application Visibility supplies classified usage information that can be compared with QoS and role-based policies, subject to the available telemetry and DPI capabilities.

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

Technical explanation

Instant AP groups traditionally use a local elected virtual conductor or equivalent cluster coordination model. AOS-10 APs do not select a local AP conductor for these centralized functions; configuration, RF planning, neighbor coordination and key-management services are orchestrated by Central. This does not imply that an AP is helpless during a cloud outage: existing datapath and configuration continue to operate within documented survivability limits. Some new coordination operations may be deferred until Central connectivity returns, whereas previously synchronized roaming information may remain available.

An elected AP conductor is the Instant model being contrasted, not the AOS-10 architecture. Peer-only telemetry and local controller-based roaming do not describe Central’s cloud-supported services; individual APs maintain their datapaths while Central provides relevant shared services.

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

Technical explanation

Choose the affected site, associate the correct device function and apply the routing configuration at that scope. The effective configuration is determined by Central's profile association and inheritance rules, including whether an object is shared or local; a site-level adjustment should not be assumed to propagate into other sites. Verify any cross-scope dependencies such as VRFs, interfaces, next hops and named objects. After deployment, compare the site's effective settings and switch routing table with an unaffected location to ensure no unintended global change.

Device scope is more specific but does not propagate “up” the hierarchy. Site collection affects multiple sites if inherited, making it too broad. Site scope retains the global baseline elsewhere while allowing the targeted routing configuration to differ.

Official HPE references | Multi-Level Hierarchy • System Profiles | Study-guide topic: Network Management with HPE Aruba Networking Central

Technical explanation

For multiple affected users, compare Client Event Log entries for a shared SSID, RADIUS server, authentication method and time interval. Similar failures concentrated after a policy or certificate change indicate a systemic cause; only one model or supplicant version failing suggests a client compatibility issue. Check whether the log reports rejection, response timeout or association loss before changing RADIUS policies. The broader Client dashboard helps establish scale, but the per-event failure messages supply the direct diagnostic evidence requested.

The Client dashboard is the route into a particular user session, but the Client Event Log contains the concrete failure record. Site Inventory lists managed assets rather than authentication exchanges. Use multiple affected clients to determine whether the issue is shared.

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

Technical explanation

Central's newer configuration design uses Global, Site Collection, Site, Device and Device Group scopes to associate reusable profiles with the intended managed objects. Inheritance reduces repetitive work but introduces precedence and object-linkage considerations. A Library profile is reusable, yet it has no effective device scope until assigned appropriately. The earlier Classic Central concepts of UI groups and template groups remain relevant to migration knowledge, but they are not the distinctive structural feature of the unified multi-level model presented in this question.

UI groups/MultiEdit and templates describe older or parallel management approaches; neither defines the new multi-level configuration architecture. Scope inheritance across Global, Site Collections, Sites, Device Groups, and Devices is the characteristic being examined.

Official HPE references | Multi-Level Hierarchy • System Profiles | Study-guide topic: Network Management with HPE Aruba Networking Central

Technical explanation

A GreenLake workspace defines the organizational boundary containing services, users, resource associations and access controls. Establish the workspace, grant appropriate administrator rights and then onboard or assign devices and subscriptions to the Central application. Subscription tier selection remains an important later step but is not the organizational prerequisite asked here. Ensure that invited users and devices are associated with the correct workspace to avoid accidental cross-tenant visibility or assigning entitlements to an unintended environment.

Assigning subscriptions and enabling auto-assignment follow the existence of an organizational workspace. Compliance data upload is not the prerequisite to creating a Central service. Workspace and roles establish the management boundary first.

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