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| Certification Vendor: | Hewlett Packard Enterprise (HPE) |
|---|---|
| Exam Name: | HPE Aruba Networking Switching Professional Exam |
| Exam Number: | HPE7-A08 |
| Passing Score: | 65% |
| Certificate Validity Period: | 3 years |
| Available Languages: | English |
| Exam Price: | $350 USD |
| Related Certifications: | HPE Aruba Networking Certified Expert - Switching |
| Exam Format: | Multiple choice, Multi-select, Scenario-based |
| Exam Duration: | 120 minutes |
| Real Exam Qty: | 75 |
| Recommended Training: | Implementing Aruba AOS-CX Switching (Rev 24.31) Official HPE7-A08 Study Guide |
| Exam Registration: | HPE Certification & Pearson VUE |
| Sample Questions: | HP HPE7-A08 Sample Questions |
| Exam Way: | Online proctored or onsite at Pearson VUE test centers |
| Pre Condition: | Recommended: 6–12 months experience with Aruba AOS-CX switches and enterprise switching; no mandatory prerequisites |
| Official Syllabus URL: | https://www.hpe.com/us/en/certification/exams/hpe7-a08.html |
>> HPE7-A08 Exam Objectives <<
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NEW QUESTION # 102
Refer to the exhibits.
The interface is configured on an HPE Aruba Networking CX 8320 for a VMware server NIC. The server admin complains that the VMware vMotion traffic on VLAN 3903 fails, but the server can ping other peers with a large payload size. What must be done to correct the issue based on the provided interface status and configuration?
Answer: B
Explanation:
To resolve vMotion connectivity issues on an Aruba AOS-CX 8320, we must ensure the network infrastructure supports Jumbo Frames end-to-end.
MTU and vMotion Requirements: VMware vMotion is highly sensitive to the Maximum Transmission Unit (MTU). For optimal performance and reliability, a 9000-byte MTU is standard. If any switch port in the path is left at the default 1500-byte MTU, vMotion operations will typically time out or fail, even if standard small- packet traffic (like a basic ping) works.
AOS-CX Configuration Syntax: In the AOS-CX operating system, Jumbo frame support is enabled by modifying the MTU at the interface level.
The standard command is mtu 9198.
The value 9198 is used because it accounts for the 9000-byte payload plus L2 headers and tagging overhead.
Unlike the older AOS-S (ProCurve) software, AOS-CX does not use the jumbo command; it uses the mtu command under the physical interface context.
Analyzing the Exhibits:
The Configuration: The exhibit for interface 1/1/35 shows a standard trunk configuration but no MTU command. This confirms the port is operating at the default 1500-byte limit.
The Statistics: The show interface extended output shows TX Jumbos: 6666. This indicates that jumbo packets have been sent, but in a troubleshooting context, this may represent previous stats or the switch counting oversized frames before dropping them or failing to receive them from the server.
Why Option B is the Correct Fix: Even if " large " pings (e.g., 2000 bytes) work due to fragmentation or " baby giant " tolerances, the specific high-throughput requirements of vMotion necessitate that the physical transport layer (interface 1/1/35) be explicitly configured to handle the full 9000-byte frame size using the mtu 9198 command.
Addressing the SVI (Option A): While an SVI (interface vlan 3903) also has an MTU, the physical port is the primary gatekeeper for Layer 2 traffic. If the physical port is set to 1500, no jumbo frame will ever reach the SVI or be switched to another port on that VLAN.
NEW QUESTION # 103
Which CLI command removes an applied QoS policy from an interface?
Answer: B
Explanation:
The no service-policy input command detaches a QoS policy from an interface, stopping traffic classification and prioritization rules from affecting packet flows.
NEW QUESTION # 104
You are attempting to configure an interface, but you are seeing the error message below. What could explain this?
Access-1(config)# interface 1/1/1
Invalid input: interface
Answer: D
Explanation:
The error message "Invalid input: interface" typically appears if the switch is managed by HPE Aruba Central, which restricts CLI interface configuration to prevent configuration drift. When managed externally, certain commands are disabled or locked.
Password recovery mode or authorization enabled would not cause this error.
Manager context is not a concept in Aruba CX CLI.
References:
Aruba Central Management Mode Documentation
HPE Aruba Switch CLI Behavior When Centrally Managed
ArubaOS-CX CLI Access Control Guide
NEW QUESTION # 105
You want to upgrade a re-provisioned Mobility Gateway that is currently using LACP. What feature will allow you to do this without removing interfaces from LAG?
Answer: B
Explanation:
LACP fallback is specifically designed to preserve connectivity when a device connected to an LACP- enabled LAG is temporarily unable to participate in LACP negotiation. This is particularly relevant to an HPE Aruba Networking Mobility Gateway during provisioning, reprovisioning, or an upgrade cycle, when the Gateway can temporarily operate without its normal LACP configuration.
HPE Aruba Networking ' s validated campus design guidance states that LAGs with LACP Fallback allow an active LACP interface to establish forwarding behavior before receiving LACP protocol data units from its peer. In Gateway deployments, Aruba also recommends enabling LACP fallback on the attached switching infrastructure to accommodate periods during which the Gateway does not yet have its LACP configuration available. Aruba Networks This eliminates the operational requirement to remove the physical interfaces from the LAG merely to preserve connectivity during the transition. Once the Gateway resumes sending valid LACP PDUs, normal dynamic LAG negotiation and aggregation can resume.
LACP active and passive only determine which participant initiates LACP negotiation. They do not provide forwarding when the peer is temporarily unable to negotiate LACP. A static LAG likewise changes the aggregation method rather than providing transitional LACP behavior.
Study Guide References: Link Aggregation; LACP Operation; LACP Fallback; Gateway Port Channels; VSX MC-LAG; Gateway Provisioning and Reprovisioning.
NEW QUESTION # 106
Which two Aruba Central features help in provisioning and managing switches at scale? (Select two)
Answer: A,C
Explanation:
Template Groups standardize configurations across multiple switches, while Configuration Snippets allow modular changes, enabling scalable and efficient provisioning.
NEW QUESTION # 107
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