HP Aruba Certified Campus Access Mobility Expert Written Exam HPE7-A07 Exam Dumps: Updated Questions & Answers (December 2025)

In Aruba CX 6300 and other AOS-CX switches, device profiling enables automatic assignment of roles and policies to endpoints based on device attributes such as MAC OUI, LLDP, or DHCP fingerprint — without requiring an external authentication server such as ClearPass or RADIUS.

The configuration snippet shows:

mac-group iot

seq 10 match mac-oui 81:cd:93

port-access device-profile iot-prod

enable

associate role iot-prod

associate mac-group iot

This means that any device with a MAC address matching the OUI 81:cd:93 will automatically be assigned the iot-prod device profile and its associated role (iot-prod).

However, the requirement also specifies that any other device connected to the same interface (that does not match the OUI or device profile) should still be assigned a default role called iot-default.

To ensure that endpoints not matching any known device profile still receive limited network access, Aruba AOS-CX uses the fallback-role feature under port-access configuration.

The command:

port-access fallback-role iot-default

defines the role that will be automatically assigned to endpoints that fail to match any of the configured device-profile conditions.

This mechanism is crucial in lab or standalone environments where no external authentication (e.g., RADIUS, ClearPass) is configured. It ensures devices are still given a default policy, preventing them from being left in an unauthenticated or blocked state.

Official HPE Aruba Extract (ArubaOS-CX Security and Access Guide):

“The fallback-role command allows the switch to assign a predefined local role to a device when no authentication server is available, or when the device does not match any configured device profile.”

“This command is typically used in test or lab environments where profiling is local to the switch, and a baseline role must still be enforced for unknown devices.”

Therefore, in this case:

Devices matching the MAC OUI 81:cd:93 → assigned iot-prod role

All other devices → automatically assigned iot-default role via port-access fallback-role iot-default

Option Analysis:

A. Incorrect – The port-access onboarding-method precedence command changes the priority order between authentication methods (e.g., 802.1X, MAC-auth, device profile). It does not control fallback behavior.

B. Incorrect – The block-until-profile-applied option delays port activation until profiling completes, but it doesn’t provide a fallback role.

C. Correct – The port-access fallback-role iot-default command ensures that any device not matching the iot-prod profile receives the iot-default role.

D. Incorrect – Lowering precedence has no effect on assigning a default role.

Final Verified Answer: C

Reference Sources (HPE Aruba Official Materials):

Aruba AOS-CX Security and Access Configuration Guide – Device Profiling and Role Assignment

Aruba Certified Switching Professional (ACSP) Study Guide – Port Access and Device Profiling

ArubaOS-CX Fundamentals Guide – Port Access and Fallback Role Implementation

Dynamic Multicast Optimization (DMO) and Multicast Transmission Optimization are features that can help address issues with multicast traffic in wireless environments. DMO optimizes the way multicast traffic is transmitted over the air by converting multicast streams into unicast streams to the clients that need them. This reduces unnecessary traffic for clients that have not subscribed to the multicast group and can improve overall network performance. Multicast Transmission Optimization adjusts the transmission rate of multicast frames to ensure they are sent at optimal speeds, addressing the issue of multicast flow being received at slow speeds by all users.

Comprehensive and Detailed Explanation (Verified Extract from HPE Aruba Networking Switching Documentation)

VOQ (Virtual Output Queuing) is a hardware-based queuing mechanism used in the ArubaOS-CX architecture to prevent head-of-line blocking and minimize packet drops in high-throughput environments.

How VOQ Works:

Each ingress port maintains a separate queue for every egress port in the system.

When a packet arrives, it is placed in the ingress buffer corresponding to its destination egress port.

This structure ensures that traffic destined for one congested egress port does not block packets heading to other ports.

This architecture is critical in high-speed modular switches and aggregation cores (such as the Aruba 8400 and 10000 Series), allowing the fabric interconnect to forward traffic efficiently without dropping packets due to port congestion.

ArubaOS-CX Technical Extract:

“Virtual Output Queuing (VOQ) provides per-egress-port queuing at ingress buffers, preventing head-of-line blocking and ensuring high throughput across the switch fabric. Each ingress queue corresponds to a specific egress port, allowing packets to be transmitted as soon as the egress port becomes available.”

Option Analysis:

A. Incorrect – Refers to priority marking (QoS), not VOQ operation.

B. Correct – VOQ provides ingress buffers with queues for each egress port, reducing dropped packets and head-of-line blocking.

C. Incorrect – VOQ is not related to LACP or VSX link aggregation.

D. Incorrect – VOQ does not dynamically allocate egress buffer space; it segregates ingress queues per egress destination.

Final Verified Answer: B

Reference Sources (HPE Aruba Official Materials):

Aruba AOS-CX Technical Architecture Overview – Virtual Output Queuing (VOQ)

Aruba 8400/10000 Series Switches Hardware and Performance Guide

Aruba Certified Switching Expert (ACSE) Study Guide – Switch Fabric and Queuing Mechanisms

In an Aruba network, if an SSID is configured for a primary and secondary gateway cluster with cluster preemption enabled, each AP individually will decide to move to the secondary gateway cluster if all of the nodes in the primary gateway cluster are down. This decentralized decision-making process enhances network resilience and ensures uninterrupted service for clients connected to the APs.

During the testing of RadSec authentication over VXLAN, if the RadSec connection fails during the digital certificate exchange, it typically indicates an issue with the establishment of the TLS tunnel, which is required for RadSec's secure communication. The failure of TLS tunnel establishment can occur due to RADIUS TCP packets being dropped, preventing the secure exchange of digital certificates necessary for RadSec authentication. The other options, such as IPv6 address reachability, tracking mode settings, and proxy server misconfiguration, are not directly related to the failure of the TLS tunnel establishment during the certificate exchange process

In Aruba gateways/switches, LLDP decodes and displays standard LLDP TLVs by default. LLDP-MED inventory TLVs (including Asset ID) are shown only when LLDP-MED is enabled.

When LLDP-MED is not enabled, received MED TLVs are counted as Unknown TLVs and are not decoded in the neighbor detail output.

In the exhibit, show lldp statistics shows “Unknown TLVs: 2” and show lldp neighbor ... detail displays only basic LLDP fields (Chassis ID, Mgmt Address, Port Description, MTU), with no MED inventory fields such as Asset ID. This is the expected symptom of LLDP-MED being disabled.

LLDP TX is not required to receive and display neighbor TLVs; the missing Asset ID is unrelated to transmit state. MTU is also not relevant to TLV decoding.

References (HPE Aruba official materials): Aruba AOS-CX LLDP/LLDP-MED configuration—MED must be enabled to advertise/parse MED inventory TLVs (Asset ID, Serial, HW/FW/SW, etc.).

Comprehensive and Detailed Explanation (Verified Extract from HPE Aruba Networking Mobility and Switching Documentation)

In Aruba mobility deployments, traffic prioritization and QoS are key to maintaining performance for latency-sensitive applications like Remote Desktop Protocol (RDP) when the mobility gateway uplinks become congested.

By default, Aruba gateways treat all user traffic equally unless QoS policies are applied. The best way to ensure critical applications such as RDP are prioritized is by defining Access Control Lists (ACLs) with traffic classification and queue assignments within the user role.

The command:

user-role Employee

access-control-list position 3

and corresponding ACL entries can assign RDP (TCP port 3389) to high-priority queues and relegate less time-sensitive traffic (like FTP or email) to lower-priority queues.

ArubaOS and Gateway Documentation Extract:

“When user roles are configured with ACLs that include QoS queue assignment, the mobility gateway can prioritize latency-sensitive applications (e.g., RDP, voice, video) by assigning traffic to higher priority queues. This ensures responsiveness during uplink congestion.”

Changing the WLAN from tunneled to bridged (Option B) could bypass gateway bottlenecks but would also remove centralized security and traffic control, which is not a best practice for enterprise-managed WLANs.

Disabling spanning tree (Option D) has no effect on QoS or congestion; it affects loop prevention only.

Setting the WMM voice DSCP value (Option C) would only influence wireless airtime QoS, not gateway uplink queuing.

Option Analysis:

A. ✅ Correct – ACL-based traffic prioritization in the employee role directly addresses congestion by ensuring RDP traffic is queued higher.

B. Incorrect – Changing SSID mode removes central visibility and security.

C. Incorrect – WMM controls radio-level prioritization, not gateway uplink congestion.

D. Incorrect – Spanning tree setting is unrelated to uplink queuing or throughput.

✅ Final Verified Answer: A

???? Reference Sources (HPE Aruba Official Materials):

ArubaOS 10 Mobility and Policy Enforcement Guide – User Roles, ACLs, and QoS Prioritization

Aruba Certified Mobility Professional (ACMP) Study Guide – Traffic Management and Application Prioritization

Aruba Mobility Gateway Configuration Guide – QoS Queuing and Traffic Classification

VoIP quality can be negatively impacted by insufficient cell overlap in AP deployment plans, which can cause poor handoffs between APs as a user moves around. This results in a degraded VoIP experience. Additionally, roaming into an area with continuous Zigbee operation can cause interference with the 5GHz frequency band, further contributing to poor VoIP call quality. The Zigbee communication protocol operates on the same frequency band as Wi-Fi and can introduce noise and interference, which leads to a reduced MOS score, as reported by the VoIP engineer.

If users report interruptions to their phone service after the deployment of User-Based Tunneling (UBT), it can be due to the VLAN designated for UBT clients not being configured on the switch uplink. As a result, traffic from VoIP phones, which may be trying to use the same VLAN, could be dropped, leading to service interruptions. Ensuring that the VLAN is properly configured on the switch uplink is crucial for the seamless operation of UBT clients and VoIP services.

Comprehensive and Detailed Explanation (Verified Extract from HPE Aruba Networking AOS-10 Gateway and Cluster Design Documentation)

When primary and secondary gateway clusters are defined in an SSID profile in AOS-10, the Access Points (APs) dynamically distribute their tunnel termination sessions based on the availability of both clusters.

If both clusters are operational and cluster preemption is not enabled, the APs maintain their current session distribution, resulting in an approximately equal split of AP tunnels across both clusters.

Aruba Documentation Extract:

“When both primary and secondary gateway clusters are reachable and cluster preemption is disabled, APs remain distributed across both clusters to maintain balance and prevent disruption.”

“Cluster preemption, if enabled, causes APs associated with the secondary cluster to move back to the primary cluster once it becomes available, consolidating tunnel load.”

Thus:

The equal split (72 APs per cluster) indicates both clusters are active,

and cluster preemption is disabled (so APs remain distributed instead of failing back to the primary cluster).

Why the Other Options Are Incorrect:

A. Cluster homogeneity/heterogeneity does not influence AP distribution behavior.

B. If preemption were enabled, APs on the secondary cluster would fail back to the primary, not stay split.

D. The number of nodes does not determine AP load balancing or distribution.

✅ Final Verified Answer: C. The primary and secondary gateway clusters are up, but the cluster preemption is not enabled.

???? Reference Sources (HPE Aruba Official Materials):

Aruba AOS-10 Gateway Clustering and Redundancy Guide – AP Distribution and Preemption

Aruba Central Network Design Guide – SSID Profile Gateway Assignment Behavior

Aruba Certified Mobility Expert (ACMX) Study Guide – Gateway Clustering and Failover Logic