HP HPE6-A90 Practice Exam Questions & Answers

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

The Connections card provides connection and session context for the selected clients, including whether attempts progressed through authentication and association. Group the failures by WLAN, radio, endpoint operating system and identity backend; a common failure stage often identifies the shared dependency. When an error appears as an authentication timeout, validate AAA transport and RADIUS responsiveness rather than assuming the passwords are incorrect. The RF Health and connectivity path cards answer different questions: spectrum condition and traffic path, respectively.

RF Health may explain weak links, while Connectivity Path is primarily a network-path view. Neither is as direct as the Connections card for linking unsuccessful authentication and connection status to actual client sessions.

Official HPE references | Troubleshooting Tools * Troubleshooting History | Study-guide topic: Network Management 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

Built-in tests run against supported Central-managed infrastructure, and available commands depend on the device type and release. APs, gateways, bridges and AOS-CX/AOS-S switches can expose appropriate ping, traceroute, DNS, cable or protocol diagnostics through their supported tools. A ClearPass appliance or arbitrary third-party firewall is not automatically a Central-managed troubleshooting endpoint. Choose the correct test origin; performing DNS resolution from an AP is not equivalent to testing client DNS access when the two paths use different policies.

Air monitors, conductors and DNS appliances are not all standard managed sources of these troubleshooting tests. Likewise, ClearPass servers and arbitrary firewalls are separate products, not automatically Central test endpoints. The capability follows supported managed device families.

Official HPE references | Troubleshooting Tools * Troubleshooting History | 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

Technical explanation

The central entity represents the context from which the operator is exploring relationships, while surrounding planets or objects provide contextual navigation to clients, devices, sites and applications. Changing the selected site or device changes the perspective, not necessarily the physical network topology. This visualization should be understood as an information-architecture mechanism rather than a literal routing map. A primary gateway, the internet edge or a severe alarm can be an object of interest, but none universally defines the central point. An internet edge, a gateway cluster, or an alert source may be visible in a given context but does not universally anchor the solar representation. The center represents the object currently being explored, allowing the surrounding relationships to shift.

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

Technical explanation

For supported live upgrade, the gateways stage their software images and restart sequentially rather than taking every tunnel termination point offline together. Cluster-state synchronization and surviving forwarding capacity let clients continue through another member during each transition. Monitor tunnel health, role state and datapath recovery between restarts; a healthy cluster is a prerequisite for claiming minimal disruption. Buffering all client traffic on APs or pausing AAA for the entire maintenance interval is not an equivalent continuity strategy and may cause application-level failure. Stateful failover depends on supported cluster topology, synchronization health and firmware compatibility. It minimizes service interruption rather than guaranteeing that every individual packet survives a gateway reboot.

Simultaneous gateway reboot would break the cluster's availability benefit. Authentication pauses and AP traffic buffering are not a substitute for an active peer holding client sessions. The peer state must be synchronized before taking each gateway offline.

Official HPE references | Creating a Firmware Policy * Live Upgrade | Study-guide topic: Introduction to AOS-10