Free HPE7-A08 Practice Test Questions 2026

Explanation:

The show checkpoint output in the exhibit lists several automatically created checkpoints from the previous day. Since the current startup-config no longer contains the device profile, you can compare it against an earlier checkpoint without altering the switch configuration.

Use:

checkpoint diff startup-config <checkpoint-name>

For example:

checkpoint diff startup-config CPC2024040119222_Access-1_6300

AOS-CX documents checkpoint diff specifically for comparing checkpoints, running-config, and startup-config. It only displays the differences, so it is safe for validation and does not roll back or modify the active configuration.

Why the other options are incorrect

A. show checkpoint:
Shows checkpoint information/configuration, but it does not directly produce a comparison between startup-config and a checkpoint.

C. copy startup-config checkpoint ...:
Creates/copies configuration data rather than simply comparing it.

D. checkpoint rollback:
Would actually restore a checkpoint and therefore change the configuration, which the question explicitly says to avoid.

Answer:
B. Use checkpoint diff to check for differences between the startup-config and available checkpoints.

Explanation:

The current configuration shows:

router ospf 1
  router-id 10.1.0.3
  area 1 stub

A normal stub area blocks external OSPF routes, but it can still receive inter-area summary routes from the ABR. That explains why the branch routing table still contains OSPF routes in addition to the default route.

For a small branch that should receive essentially only a default route for destinations outside the area, configure the area as a Totally Stubby Area. On AOS-CX, this is done with:

area 1 stub no-summary

HPE Aruba documents stub no-summary as a totally stubby area, where summary LSAs/inter-area routes are not injected into the stub area.

Why the other options are incorrect

A. Totally NSSA:
Used when the area must redistribute external routes locally while suppressing other external/inter-area information.

B. Stub Area:
Already configured in the exhibit and still permits inter-area summary routes.

D. NSSA:
Allows redistribution of external routes as Type 7 LSAs, which is not required here.

Answer:
C. Totally Stubby Area

Explanation:

The HPE Aruba Networking CX 8320 uses the interface MTU to determine the maximum Ethernet frame size that can be received and forwarded.

In the exhibit, interface 1/1/35 is configured as a Layer 2 trunk, allowing VLANs 3903 and 4011. However, no MTU is explicitly configured.

The default MTU is 1500 bytes. To support jumbo frames, the interface MTU must be increased to the required value. HPE AOS-CX supports an interface MTU of up to 9198 bytes on the 8320.

Why the other options are incorrect

A. VLAN 3903 configured with MTU 9198:
The interface is a Layer 2 trunk. The relevant setting is the physical interface MTU.

C. VLAN 3903 configured with jumbo:
AOS-CX does not use a per-VLAN jumbo command for this configuration.

D. Interface 1/1/35 configured with jumbo:
AOS-CX uses the mtu command rather than a separate jumbo command.

Configuration

configure terminal
interface 1/1/35
mtu 9198

Ensure the MTU is compatible across the complete vMotion path, including the VMware NICs and intermediate switches.

Exam takeaway:
On an AOS-CX 8320, configure mtu 9198 on the physical interface to support jumbo Ethernet frames.

Explanation:

When troubleshooting a Downloadable User Role (DUR) implementation between HPE Aruba Networking CX switches and ClearPass Policy Manager (CPPM), the switch requires secure HTTPS communication to fetch the role definition files.

Why it is correct:
A Trust Anchor profile must be properly configured and verified on the switch. It contains the root Certificate Authority (CA) certificate used to validate the digital certificate presented by ClearPass during secure HTTPS/RADIUS transactions. If the trust anchor is missing, untrusted, or misconfigured, the switch will reject the secure connection, and the downloadable user role will fail to apply.

Why the others are incorrect:

- SNMP community string is used for basic network monitoring and management polling, not for downloading user roles from ClearPass.
- User-role configuration itself is dynamically downloaded from ClearPass rather than locally provisioned beforehand, so checking local static entries won't resolve a download breakdown.
- HTTPS client certificate is part of client/server authentication context, but the foundational validation required on the switch to trust the ClearPass server endpoint relies on the configured Trust Anchor profile.

Reference
ArubaOS-CX Security Guide – Downloadable User Roles & PKI Trust Anchor Configuration.

Explanation:

The behavior you are seeing—where the BFD session stays down while the OSPF neighbor state remains up—is a clear indicator that OSPF and BFD are operating independently on the local switch.

When you enable BFD for OSPF on an AOS-CX switch, OSPF registers with BFD to receive forwarding path detection failure messages. This means that for the BFD session to come up, both ends of the link must have BFD enabled and operational for that OSPF session.

If the remote switch does not support BFD, or simply does not have it enabled, the local switch will attempt to establish a BFD session but will receive no responses. The BFD session will therefore stay in a Down state. Meanwhile, OSPF itself continues to function normally because BFD failure does not tear down the OSPF adjacency—it is a separate mechanism meant to provide faster failure detection.

Why Other Options Are Incorrect

B. BFD is not supported on OSPF broadcast links:
BFD is supported on OSPF broadcast links on AOS-CX switches. The OSPF network type does not prevent BFD from functioning.

C. BFD has not been enabled at the global configuration level:
BFD can be enabled selectively on a per-interface basis for OSPF without a global BFD configuration. The ip ospf bfd command in interface configuration mode is sufficient to enable BFD for that specific OSPF interface.

D. The local switch uses OSPFv3, but the remote switch uses OSPFv2:
If the local switch is running OSPFv3 and the remote is running OSPFv2, the OSPF neighbor state would not be up. The fact that OSPF is up confirms that both switches are running the same OSPF version.

Key Concept

OSPF neighbor adjacency:
Established independently of BFD.

BFD session:
Requires BFD support and configuration on both ends of the link.

This is why you can have a stable OSPF neighbor while the BFD session remains down—OSPF and BFD are separate protocols that operate in parallel.

Explanation:

HPE Aruba Networking CX VSX supports changing the system MAC address in ServiceOS so that a replacement switch can use the original switch's system MAC address.

This maintains MAC address consistency during hardware replacement, helping preserve Layer 2 control-plane behavior and avoid disruptions.

However, the wording of option D is important: it refers to changing the system MAC in ServiceOS, rather than configuring a common VSX system MAC through the normal AOS-CX configuration.

Why the other options are incorrect

A. Reserved system-MAC ranges:
These ranges are used for locally administered MAC addresses, but their use alone does not ensure seamless hardware replacement.

B. VSX-sync:
Synchronizes supported configuration between VSX peers; it does not synchronize the system MAC through a VSX-sync option.

C. Entering the primary system MAC on the secondary:
This is not the mechanism described for replacing a switch while preserving its original hardware identity.

Important technical distinction

HPE's official VSX documentation recommends configuring a common system MAC on both VSX switches using system-mac. This helps maintain consistent Layer 2 control-plane identifiers, including STP and LACP, during hardware replacement.

Exam takeaway:
The expected answer is D, referring to preserving the original system MAC during hardware replacement.