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HPE Campus Access Switching Expert Written Exam 認定 HPE7-A06 試験問題 (Q62-Q67):

質問 # 62
Exhibit.

AGG-SW1 and AGG-SW2 are configured with iBGP and eBGP to AS65000. Both agg-sw1 and agg-sw2 useroute-map BGP-EXPORT and ip-prefix list local-export in the bgp configuration.
What must be done on agg-swl for the adjacent router to prefer to route all exported routes by agg-sw2?

A. Add set as-path prepend 65345 65345 65345 65345 to the route-map BGP-EXPORT Match with local- export Ip prefix-list.
B. Add set metric 200 to the route-map BGP-EXPORT.
C. Add set as-path 65345 65345 65345 65345 to the route-map BGP-EXPORT Match with local-export ip prefix-list.
D. Add set local-preference 200 to the route-map BGP-EXPORT

正解：A

解説：
The goal is to make the adjacent router prefer routes exported by AGG-SW2 over AGG-SW1 for iBGP and eBGP routes to AS65000. Both switches use a route-map BGP-EXPORT with an ip-prefix list local-export.
BGP path selection uses attributes like local preference, AS path length, and metric to determine the preferred route.
* Analysis of Options:
* Option A:Setting local-preference 200 affects iBGP route selection within the same AS but has no impact on eBGP peers (external AS65000), as local preference is not advertised externally.
* Option B:Prepending the AS path with 65345 65345 65345 65345 increases the AS path length for routes exported by AGG-SW1, making them less preferred by the adjacent router (both iBGP and eBGP peers) compared to AGG-SW2's routes, which have a shorter AS path.
* Option C:Setting metric 200 affects the MED (Multi-Exit Discriminator), which is used for eBGP route selection within the same AS but is less influential than AS path length and not applicable for iBGP.
* Option D:Incorrect syntax (set as-path without prepend) and does not achieve the desired effect.
* Why Option B is Correct:BGP route selection prioritizes the shortest AS path for both iBGP and eBGP. By prepending AS 65345 multiple times to AGG-SW1's exported routes, AGG-SW1's routes appear less attractive due to a longer AS path, causing the adjacent router to prefer AGG-SW2's routes.
This is a standard BGP traffic engineering technique.
* Relevance to Certification Objectives:
* Routing (16%):Involves designing and troubleshooting BGP routing topologies, including manipulating path attributes like AS path.
* Troubleshooting (10%):Includes remediating BGP routing issues by adjusting route-maps.
References:
HPE Aruba Networking AOS-CX Configuration Guide: BGP Configuration, covering route-maps and AS path prepending.
HPE7-A06Study Guide: Details BGP path selection and traffic engineering.
HPE Aruba Networking Technical Documentation: BGP Route Manipulation, explaining AS path prepending for route preference.

質問 # 63
Refer to the exhibit and cede sample.

What is the effect when you add thestatement "neighbor 10.2.0.3 send-community both" to the ipv4 address family? (Select two.)

A. The feature will be enabled without consequence to the R1established session with R2.
B. Itcauses R1to allow the exchange ofcommunities with NLRI records in both inbound and outbound direction
C. It causes R1 to negotiate the ability to send and receive standard and extended communities with R2.
D. It will cause existing BGP peering between R1and R2 to flap.
E. It causes R1to negotiate for the ability to import and export all type-1 and lype-2 communities with R2.

正解：C、D

解説：
The question asks for the effects of adding the command neighbor 10.2.0.3 send-community both to the BGP configuration under the IPv4 address family context for neighbor R2 (10.2.0.3) on router R1.
* send-community both:This command instructs R1 to send both standard (RFC 1997) and extended (RFC 4360) BGP community attributes to neighbor R2. By default, communities are not sent.
* BGP Capability Negotiation:Adding or changing features like community advertisement modifies the BGP capabilities exchanged between neighbors during session establishment. Any change to these capabilities requires the BGP session to be reset (flap) so that the peers can renegotiate using the new capabilities.
* Analysis of Options (Select Two):
* A: Correct (partially). It enables R1 tosendstandard and extended communities. The ability to receivedepends on the peer and local config. The capability isnegotiatedupon session reset.
* B: Incorrect. Changing capabilities requires the session to flap; it's not without consequence.
* C: Incorrect. It primarily enablesoutboundsending from R1. Inbound acceptance is implicit if the neighbor is activated.
* D: Correct. Modifying BGP neighbor capabilities, such as enabling send-community, necessitates a BGP session reset (flap) for the change to take effect.
* E: Incorrect terminology ("import/export", "type-1/type-2 communities").
* Conclusion:The command enables R1 to send communities (A describes the purpose/capability), and adding this command to an existing session will cause the session to flap for renegotiation (D describes the immediate consequence).
References:RFC 1997, RFC 4360, AOS-CX BGP Configuration Guide (communities, neighbor configuration). This relates to the "Routing" (16%) objective.

質問 # 64
A customer wants to deploy loT security devices that are PoE-powered. Dueto its criticality. it is required that those devices remain active even during a switch software upgrade. What is a valid solution to meet customer requirements?

A. a VSX pairof switches for redundancy
B. power-over-ethernel priority
C. power-over-ether net quick-poe
D. power-over-ethernet always-on

正解：D

解説：
The question involves a customer deploying PoE-powered IoT security devices (e.g., door locks) that must remain active during an AOS-CX switch software upgrade. The task is to identify a valid solution.
* Analysis of Options:
* Option A:Incorrect. A VSX pair provides redundancy but does not guarantee PoE continuity during a single switch's upgrade.
* Option B:Incorrect. quick-poe reduces PoE startup time but does not ensure power during upgrades.
* Option C:Correct. power-over-ethernet always-on ensures PoE remains active during software upgrades, meeting the requirement.
* Option D:Incorrect. PoE priority adjusts power allocation but does not guarantee continuity during upgrades.
* Why Option C is Correct:The power-over-ethernet always-on feature on AOS-CX switches ensures that PoE power delivery continues uninterrupted during software upgrades or reboots, critical for devices like IoT security door locks that require constant power. This feature prevents power cycling on PoE ports, maintaining device operation. For example, enabling it on relevant ports (e.g., interface 1/1/1 power-over-ethernet always-on) ensures compliance with the customer's requirement, as per HPE Aruba Networking's PoE high-availability guidelines.
* Relevance to Certification Objectives:
* Connectivity (9%):Configuring PoE for critical device deployment.
* Network Resiliency and Virtualization (8%):Ensuring device uptime during maintenance.
* Troubleshooting (10%):Resolving PoE continuity issues.
References:
HPE Aruba Networking AOS-CX Configuration Guide: PoE Always-On Feature.
HPE7-A06Study Guide: Covers PoE configuration for high-availability devices.
HPE Aruba Networking Technical Documentation: PoE Best Practices for IoT.

質問 # 65
Review the diagram and existing configuration of RouterA above. Which configuration changes are necessary to permit load balancing between RouterA and RouterB? (Selecttwo) Exhibit.

正解：B、D

解説：
Analyze Topology and Existing Configuration:
* RouterA (AS 64500) peers with RouterB (AS 64512) using eBGP.
* Peering is configured between loopback interfaces (RouterA Lo0 10.3.0.3 to RouterB Lo0 10.255.0.12).
* Two parallel physical links connect the routers (10.255.102.0/30 and 10.255.102.4/30).
* RouterA has two static routes pointing to RouterB's loopback (10.255.0.12/32), one via each physical link's next hop (10.255.102.1 and 10.255.102.5). This provides reachability to the BGP peer address over both paths.
* RouterA's BGP config activates the neighbor 10.255.0.12 for IPv4 unicast but is missing key commands for stable loopback peering and load balancing.
Goal:Permit load balancing for traffic exchanged via BGP between RouterA and RouterB. This requires BGP ECMP (Equal Cost Multi-Path).
Requirements for eBGP ECMP over Loopbacks:
* Stable Peering:Peering must use loopback addresses. This requires:
* update-source loopback <id>: To source BGP TCP packets from the loopback IP.
* ebgp-multihop <ttl>: Because loopbacks are not directly connected (TTL > 1 needed).
* ECMP Enabled:BGP must be configured to allow multiple paths in the routing table. This requires:
* maximum-paths <n> (or maximum-paths ebgp <n>): To allow more than the default 1 path.
* Equal Paths:BGP must see multiple paths to thesameprefix learnedfrom RouterBthat are considered equal based on BGP path selection attributes (Weight, Local_Pref, AS_Path, Origin, MED, etc.). Since routes are learned from the same neighbor IP (RouterB's loopback), these attributes will likely be identical for routes learned via this peering. RouterA already has equal static routestothe BGP next hop (10.255.0.12).

質問 # 66
Which setof commands willapply the device profile 'AP'to the device shown in the LLDP neighbor output below?

正解：D

解説：
The goal is to configure the switch to automatically apply a specific device profile (named AP-PROFILE in the options) to ports where an Aruba AP Model 635 connects, using LLDP information for detection.
* LLDP Information:The LLDP neighbor output shows:
* Neighbor Chassis-Description: ArubaOS (MODEL: 635), Version Aruba AP
* Neighbor Chassis-Name: AP-42
* Device Profile Mechanism:This involves creating an LLDP group that matches specific attributes of the desired device, creating a device profile containing the desired port configurations (VLAN, PoE, QoS, Role, etc.), associating the profile with the LLDP group, and enabling the feature globally.
* Analyzing Configuration Options:All options configure an LLDP group AP-LLDP-GROUP and a device profile AP-PROFILE. The key is the matching condition within the LLDP group and the completeness of the profile configuration.
* Matching Condition:
* Options A, C, D use seq 10 match sys-desc 635. This condition checks if the LLDP System Description contains the string "635". Based on the output (...MODEL: 635...), this conditionwill matchthe target AP.
* Option B uses seq 10 match sys-name 635. This checks if the LLDP System Name contains
"635". The output shows Neighbor Chassis-Name: AP-42. This conditionwill not match.

質問 # 67
......

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HPE7-A06試験の準備方法｜信頼的なHPE7-A06復習教材試験｜認定するHPE Campus Access Switching Expert Written Exam復習対策書

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