Free HP HPE6-A29 Exam Practice Questions & Explanations
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A retail chain's network architect is evaluating solutions to reduce manual network re-configuration time when opening new branch stores, and also wants centralized programmability to enforce dynamic policies based on real time application traffic patterns detected by an analytics engine. The customer explicitly needs the ability to have a centralized controller push flow-level changes across the network in response to that analytics engine's recommendations. Which HPE offering should the architect recommend as the foundation of this solution?
The correct answer is B. This scenario explicitly calls for centralized programmability and integration with an external analytics engine driving dynamic, flow-level policy changes, which is the defining use case for an SDN architecture. The Aruba SDN Controller's northbound API allows an SDN application (built in-house or by a partner) to consume analytics data and programmatically instruct the controller to make flow-level changes across the network. ClearPass Guest (A) only handles guest onboarding, not flow-level SDN programmability. A flat manually configured network (C) contradicts the goal of reducing manual configuration. Instant AP clusters (D) lack centralized SDN control. AirWave dashboards (E) provide visibility and reporting but cannot programmatically push flow changes, making it insufficient alone for this requirement.
A customer operating a large multi-controller Aruba mobility network wants to ensure that if the master controller becomes unavailable, a local controller can automatically assume master responsibilities to maintain licensing, configuration synchronization, and RF management without requiring manual intervention.
True or False: Configuring VRRP between a master and standby (backup master) controller, with the backup controller's priority sufficiently high, satisfies this requirement for automatic master failover.
The statement is True. VRRP (Virtual Router Redundancy Protocol) is used in Aruba's redundancy design to provide a virtual master IP address shared between an active master and a standby (backup) master controller. When the active master fails, the standby controller with the higher priority automatically takes over the virtual IP and assumes master responsibilities, including licensing management, configuration database synchronization, and centralized RF management (via ARM), all without manual intervention. This is a core and current design pattern in Aruba multi-controller mobility architectures for achieving high availability.
A hospital campus has three buildings, each served by its own Mobility Controller. Clients frequently roam between buildings while running mission critical VoWLAN applications. The customer requires session persistence and minimal roaming latency across controllers, along with controller-level redundancy in case any single controller fails. Which design best satisfies these requirements?
The correct answer is B. In a multi-controller mobility architecture, configuring controllers within a mobility domain enables seamless Layer 3 roaming by maintaining client session state (via the Mobility Manager/Home Agent-Foreign Agent concept) as users move between controllers. Adding VRRP-based Master-Standby (or Master-Local) redundancy ensures that if one controller fails, another can take over master functions with minimal disruption, achieving both session persistence and redundancy. Option A causes session drops and voice call interruptions since DHCP renewal is slow and disruptive. Option C prevents seamless roaming since there's no mobility domain communication. Option D removes redundancy entirely, violating the requirement for controller-level failover.
An enterprise wants to deploy an SDN app that automatically detects and mitigates DDoS attacks by dynamically reprogramming flow tables on the network without manual intervention. Which capability of the HPE SDN architecture directly enables this kind of automated, application-driven network control?
The correct answer is B. The SDN Controller's northbound REST API allows purpose-built SDN applications, such as an automated DDoS mitigation app, to communicate with the controller and dynamically reprogram network flows in real time. VLAN pooling (A) is a WLAN capacity feature unrelated to SDN app control. GRE tunneling (C) is a data-plane technique for traffic encapsulation, not app-driven automation. AirWave survey data (D) relates to RF planning and has no role in flow-level SDN mitigation.
A campus network is being redesigned to use an SDN-based approach for automated traffic steering and network-wide visibility. The customer wants a centralized platform that can programmatically control network paths and integrate with third-party applications via a northbound API. Which HPE Aruba component fulfills this SDN controller role?
The correct answer is B. The Aruba SDN Controller (based on the VAN SDN Controller framework) provides centralized, programmable control over the network with a northbound REST API that allows third-party applications to interact with and control network behavior, enabling use cases such as automated traffic steering. AirWave (A) is a network management and monitoring tool, not an SDN controller. ClearPass (C) is a policy and NAC platform, not an SDN control plane. A standalone Mobility Controller (D) manages WLAN/mobility functions but does not provide SDN programmability or a northbound API for third-party integration.