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| Certification Vendor: | Hewlett Packard Enterprise (HPE) |
|---|---|
| Exam Name: | HPE Aruba Networking Switching Professional Exam |
| Exam Number: | HPE7-A08 |
| Exam Format: | Multi-select, Scenario-based, Multiple choice |
| Exam Price: | $350 USD |
| Available Languages: | English |
| Certificate Validity Period: | 3 years |
| Related Certifications: | HPE Aruba Networking Certified Expert - Switching |
| Exam Duration: | 120 minutes |
| Passing Score: | 65% |
| 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 |
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NEW QUESTION # 43
A customer has set global qos trust dscp on an HPE Aruba Networking CX 6300 VSF configuration, which replaced the existing HPE Aruba Networking 5406R VSF. After the change, a video streaming service connected to ports 1/1/20 and 2/1/20, bound to LAG 20, no longer maps to the CoS priority queue mappings used in the old configuration.
What configuration change would enable priority trust on DSCP by default and on traffic that requires CoS?
Answer: A
Explanation:
To resolve this QoS mapping issue on AOS-CX , you must understand the hierarchy of Trust Levels and how they interact with Link Aggregation Groups (LAGs) .
* Trust Hierarchy: AOS-CX switches use a " top-down " approach for QoS.
* Global Trust: Setting qos trust dscp globally means that, by default, every port on the switch will look at the Layer 3 DSCP markings to determine queue priority.
* Interface Override: You can override the global setting on a per-interface basis. If a specific device or service (like the video streaming service in this prompt) relies solely on Layer 2 CoS (802.1p) markings rather than DSCP, the switch will ignore those CoS markings under the global DSCP policy and place the traffic in a default (best-effort) queue.
* LAG Configuration Logic: In the AOS-CX architecture, a LAG is a logical interface (interface lag 20).
* Configuration parameters for the bundle (such as VLANs, ACLs, and QoS trust) should be applied to the logical LAG interface , not the individual physical member ports (1/1/20 and 2/1
/20).
* Once applied to the LAG, the settings are automatically inherited by all physical members.
* Analyzing the Options:
* Option D (Correct): By entering the interface lag 20 context and applying qos trust cos, you are instructing the switch to ignore the global DSCP setting for this specific bundle and instead trust the Layer 2 priority bits. This allows the video service to once again map correctly to the intended priority queues.
* Option A: This is unnecessarily complex. Setting the physical member ports to qos trust none and then the LAG to cos is redundant because the LAG configuration overrides the physical port settings in this context.
* Option B: qos trust dscp, cos is not a valid AOS-CX command. Unlike the older AOS-S (ProCurve) software which allowed a combined dscp-cos trust, AOS-CX requires you to choose a single trust type (DSCP, CoS, or None) per interface.
* Option C: This applies the configuration to the physical ports only. In an AOS-CX VSF/LAG environment, this is considered a configuration error or " best practice " violation, as the logical LAG interface should hold the configuration.
NEW QUESTION # 44
Which feature allows Aruba CX switches to detect and remediate network anomalies in real-time?
Answer: B
Explanation:
NAE continuously monitors the network for anomalies, using event-based automation to analyze and remediate issues, enhancing real-time network stability.
NEW QUESTION # 45
A recent routing change has caused an outage to one of your customer's branch sites. You are about to run the command below:
copy checkpoint 20240722 running-config
Which troubleshooting methodology does this exemplify?
Answer: C
Explanation:
In the Aruba troubleshooting framework, there are several structured approaches to resolving network issues.
* Replace Configuration (Option A): This methodology involves reverting the system to a known good state. In AOS-CX, Checkpoints are snapshots of the switch configuration. By running copy checkpoint
[name] running-config, the administrator is essentially performing a " rollback. " This is often used when a recent change (like the routing change mentioned) caused a failure, and the fastest way to restore service is to " replace " the current faulty configuration with a verified historical one.
* Evaluating Other Methodologies:
* Top-down/Bottom-up: These involve working through the OSI layers (either from physical to application or vice-versa).
* Spot the difference: This involves comparing a working device/configuration with a non- working one. While you might use checkpoint diff to find the error, the act of copying the checkpoint itself is the " Replace " method.
* Divide and conquer: This involves starting in the middle of a stack (e.g., Layer 3) and testing in both directions.
NEW QUESTION # 46
Which Aruba CX switch feature enables stacking multiple switches to operate as a single unit?
Answer: A
Explanation:
VSF allows multiple switches to function as a single logical switch, improving scalability, redundancy, and simplified management.
NEW QUESTION # 47
Which CLI command checks if a switch interface has learned any MAC addresses?
Answer: A
Explanation:
The show mac-address-table interface command confirms whether a switch port is actively learning MAC addresses, helping diagnose connectivity and VLAN issues.
NEW QUESTION # 48
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