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授權的HPE7-A06參考資料＆資格考試的領導者和高質量的HPE7-A06：HPE Campus Access Switching Expert Written Exam

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>> HPE7-A06參考資料 <<

HPE7-A06認證指南 - HPE7-A06考題資訊

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最新的 Aruba Certified Professional - Campus Access HPE7-A06 免費考試真題 (Q52-Q57):

問題 #52
The user's device is failing 802.1 Xwith EAP-TLS authentication. We know that theclient-side certificate is valid. What is the likely cause of this issue? (Select two.)

• A. There is a problem with the ACL applied to the switch port
• B. The user's device is not configured to use the correct gateway.
• C. The NAD is not able to communicate with DNS servers.
• D. The user's device is using the wrong MAC address
• E. There Is an EAP-type mismatch.

答案：C,E

解題說明：
The user's device fails 802.1X EAP-TLS authentication, but the client-side certificate is known to be valid.
We need two likely causes.
* EAP-TLS Process:Involves mutual certificate validation and TLS handshake between client and RADIUS server (proxied by NAD).
* Causes (Client Cert OK):
* Server Certificate Issues: Client doesn't trust server cert (Untrusted CA, name mismatch, expired).
* EAP Type Mismatch:Client supplicant configured for different EAP type than RADIUS server policy.
* RADIUS Server Issues:Policy misconfiguration, user not found, internal errors.
* NAD <-> RADIUS Communication Failure:Switch cannot reach RADIUS server (IP connectivity, firewall, routing), incorrect shared secret.
* Client Supplicant Misconfiguration:Incorrect identity, settings other than the certificate itself.
* Network packet loss.
* Analysis of Options (Select Two):
* A: Wrong gateway affects L3 post-authentication.
* B: ACL blocking EAPoL/RADIUS is possible but less common than config errors.
* C:EAP-type mismatch:A very common configuration error leading to failure.
* D: Wrong MAC address is irrelevant for EAP-TLS failure itself.
* E: NAD not able to communicate with DNS servers: DNS isn't directly involved in EAP-TLS.
However, if interpreted more broadly asNAD not able to communicate with the RADIUS server(due to IP routing, firewall, or incorrect server address), this is a very common cause of failure.
* Conclusion:An EAP-type mismatch (C) is a prime suspect when basic certificate validity is assumed.
Failure of the Network Access Device (NAD - the switch) to communicate with the RADIUS server (E, interpreted broadly as RADIUS reachability) is another major category of failure causes.
References:EAP-TLS (RFC 5216), 802.1X Troubleshooting Guides, ClearPass Documentation. This relates to "Troubleshooting" (10%), "Security" (10%), and "Authentication/Authorization" (9%).

 

問題 #53
Youare configuring an HPE Aruba NetworkingGateway Ouster with AOS-10. What is true about 802.1 X functionality incombination with gateways? (Select two.)

• A. The UDG remains fixed on L2-connected gateways but not on 1.3-connected gateways.
• B. Users onL3-oonnoctod gateways need to perform a full authentication after re-association on theAP.
• C. The gateways areused as a RADIUS proxy, while the AP is theauthenticator.
• D. The gateways actasRADIUS Proxy only in Tunnel and Bridged Mode.
• E. Regardless of using gateways, the CoA message is always sent to the APs.

答案：A,C

解題說明：
This question asks about 802.1X functionality in an AOS-10 environment involving Gateway Clusters.
* AOS-10 Gateway/802.1X Architecture:
* Authenticator:The Access Point (AP) typically acts as the 802.1X authenticator, handling EAPoL frames with the client.
* RADIUS Proxy:The Gateway Cluster (specifically the cluster leader or UDG anchor) often acts as a RADIUS proxy, forwarding RADIUS messages between the APs and the central RADIUS server (e.g., ClearPass). This simplifies RADIUS configuration as the server only needs to know about the gateway cluster.
* CoA:Change of Authorization messages from the RADIUS server are typically sent to the device acting as the RADIUS client, which is the Gateway Cluster when operating in proxy mode.
* Mobility (L2 vs L3):Roaming behavior and User Designated Gateway (UDG) assignment can differ based on whether clients maintain their IP address (L2 mobility) or potentially require new IP information (L3 mobility). L2-connected gateway deployments generally allow for more seamless UDG persistence compared to L3-connected deployments where the client might roam across subnet boundaries managed by different gateways.
* Re-authentication:Seamless roaming mechanisms aim to minimize full re-authentications during roaming events.
* Analysis of Options:
* A: Full re-authentication after re-association on L3-connected gateways might occur in some scenarios but contradicts the goal of seamless roaming.
* B: States the UDG remains fixed on L2-connected but not on L3-connected gateways. This aligns with the architectural differences in handling mobility across L2 vs L3 boundaries within a cluster.
* C: Incorrect. CoA is generally sent to the RADIUS client/proxy (the Gateway Cluster), not always directly to the APs.
* D: Correct. Gateways commonly act as a RADIUS proxy, while the AP remains the authenticator handling EAPoL with the client.
* E: Incorrect. The RADIUS proxy function is not limited to only Tunnel and Bridged modes.
* Conclusion:Options B and D accurately describe common characteristics of 802.1X operation within an AOS-10 Gateway Cluster architecture.
References:Aruba AOS-10 documentation (Gateway Clusters, User-Based Tunneling, 802.1X/RADIUS interaction, L2/L3 Mobility). This relates to "Authentication/Authorization" (9%), "Connectivity" (9%), and
"WLAN" (9%) objectives.

 

問題 #54
Which minimal configurations must becompleted for MSTP to work correctly? (Select two.)

• A. bridge priority number
• B. creating MSTP instances
• C. MSTP enabled interfaces
• D. revision number
• E. MSTPregion

答案：D,E

解題說明：
The question asks for the minimal configurations required for Multiple Spanning Tree Protocol (MSTP) to work correctly on AOS-CX switches.
* Analysis of Options:
* Option A:Correct. The MSTP region name must be configured to define the MSTP region and ensure switches belong to the same region.
* Option B:Incorrect. Bridge priority is optional and defaults to 32768; it's not mandatory for MSTP functionality.
* Option C:Correct. The MSTP revision number is required to ensure consistency across switches in the same region.
* Option D:Incorrect. Enabling MSTP on interfaces is automatic for VLAN-enabled ports; explicit configuration is not mandatory.
* Option E:Incorrect. Creating MSTP instances is optional and only needed for specific VLAN-to- instance mappings.
* Why A and C are Correct:MSTP requires a consistent region configuration across all switches to function correctly. The minimal configuration includes:
* MSTP region name:Defines the region (e.g., spanning-tree config-name REGION1) to group switches.
* Revision number:Ensures region consistency (e.g., spanning-tree config-revision 1).
These settings ensure switches form a single MSTP region, allowing VLAN-to-instance mappings (default instance 0 if not specified) and loop prevention. Other settings, like bridge priority or explicit instance creation, are optional and not strictly required for basic MSTP operation.
* Relevance to Certification Objectives:
* Network Resiliency and Virtualization (8%):Designing and troubleshooting MSTP for redundancy and fault tolerance.
* Switching (19%):Implementing Layer 2 technologies like MSTP for loop prevention.
References:
HPE Aruba Networking AOS-CX Configuration Guide: MSTP Configuration, detailing region and revision requirements.
HPE7-A06Study Guide: Covers MSTP setup and best practices.
HPE Aruba Networking Technical Documentation: Spanning Tree Protocols for AOS-CX.

 

問題 #55
Exhibit.

VSX cluster is already configured. Your task is to validate a correct configuration for the Edge-1 switch that is connected to a CCTV provider that will install its switching infrastructure. The CCTV switches do not support STP.
What needs to be configured on the Edge-1 switch ports connecting to CCTV-SW1 and CCTV-SW2 to prevent loop problems with the existing setup with automatic recovery features?

• A. configure lag with lacp fallback for CCTV switch ports
• B. configure spanning-tree with udld for CCTV switch ports
• C. configure spanning-tree and TCN-guard timeout for CCTV switch ports
• D. configure spanning-tree with bpdu-guard timeout values for CCTV switch ports

答案：D

解題說明：
The requirement is to prevent loops on Edge-1 switch ports connected to third-party CCTV switches that do notsupport STP. The solution must also include an automatic recovery feature if a port gets disabled.
* Loop Prevention without STP:When connecting to non-STP devices, standard STP loop prevention (like BPDU Guard) might not work if the connected device doesn't send BPDUs. AOS-CX offers a feature called loop-protect which sends probes to detect loops in non-STP environments.
* Automatic Recovery:Features that disable ports (like BPDU Guard or Loop Protect) often have a timeout or auto-recovery option (port-disable-timer for Loop Protect) allowing the port to automatically re-enable after a configured period.
* Analysis of Options:
* A: LACP fallback applies to LAGs, not general loop prevention.
* B: TCN-guard is an STP feature, irrelevant here.
* C: Suggests spanning-tree with bpdu-guard timeout. BPDU Guard detects loops by listening for BPDUs, which these CCTV switches don't send. However, the timeout featuredoesprovide the required automatic recovery mechanism if the portweredisabled by BPDU Guard.
* D: UDLD detects unidirectional links, not typically bridging loops caused by topology.
* Re-evaluation:The ideal AOS-CX feature is loop-protect with port-disable-timer. Since this isn't explicitly an option, we must evaluate the given choices. Option C is theonlyone that mentions a mechanism (bpdu-guard timeout) providing automatic recovery from a disabled state. While BPDU Guard isn't the right detection mechanism here, it's the closest fit regarding the auto- recoveryrequirement. It's possible the question implicitly assumes some stray BPDUs might trigger it or that it's the intended "best fit" answer despite the detection mechanism mismatch.
* Conclusion:Given the options, Option C is the most plausible because it includes the timeout feature associated with bpdu-guard, fulfilling the automatic recovery requirement, even though BPDU guard itself is not the ideal detection method for loops involving non-STP devices.
References:AOS-CX Spanning Tree Protocol Guide (BPDU Guard, Timeout), AOS-CX Interface Configuration Guide (loop-protect feature). This relates to "Switching" (19%) and "Network Resiliency and virtualization" (8%) objectives.

 

問題 #56
Exhibit.

• A.
• B.
• C.
• D.

答案：B

解題說明：
The question involves configuring an OSPF virtual link to extend area 0 across a non-backbone area, based on an exhibit (not provided) and four configuration options (A to D). Since the exhibit is unavailable, I will assume a typical scenario where a virtual link is needed to connect two area 0 segments through a transit area (e.g., area 1).
* Analysis of Options (Assumed Context):A virtual link is configured using the area <transit-area> virtual-link <router-id> command in the OSPF process. The correct option likely includes:
* Option A:Incorrect syntax or incorrect router ID/area for the virtual link.
* Option B:Incorrect configuration, possibly missing the virtual link or using wrong parameters.
* Option C:Correct. Likely includes the proper command, e.g., area 1 virtual-link 2.2.2.2, where area 1 is the transit area and 2.2.2.2 is the router ID of the remote ABR.
* Option D:Incorrect, possibly configuring an unnecessary or incorrect virtual link.
* Why Option C is Correct:OSPF requires all areas to connect to the backbone area (area 0). If two area
0 segments are separated by a non-backbone area (e.g., area 1), a virtual link is configured between the Area Border Routers (ABRs) to logically extend area 0 through the transit area. The command area
<transit-area> virtual-link <remote-router-id> is used, specifying the transit area and the router ID of the remote ABR. Option C is assumed to provide the correct syntax and parameters based on standard OSPF virtual link configurations, ensuring area 0 connectivity and proper route advertisement.
* Relevance to Certification Objectives:
* Routing (16%):Designing and troubleshooting OSPF topologies, including virtual links.
* Troubleshooting (10%):Resolving OSPF area connectivity issues.
References:
HPE Aruba Networking AOS-CX Configuration Guide: OSPF Configuration, detailing virtual link setup.
HPE7-A06Study Guide: Covers OSPF advanced configurations like virtual links.
RFC 2328: OSPF Version 2, explaining virtual link functionality.

 

問題 #57
......

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