HP HPE7-A08 Online Practice Questions and Exam Preparation

HP HPE7-A08 Online Questions & Answers

• Question 1:

  You have run a script to configure a new VLAN on a CX switch, but are receiving a '404 - Not Found' HTTP response code.

  What do you need to do to resolve the issue?

  A. Send a POST request to the /rest/v1/login resource.
  B. Correct syntax error contained in the data payload.
  C. Enable the switch REST API in read/write mode.
  D. Specify the /rest/v1/system/vlan URI in the request.
  D. Specify the /rest/v1/system/vlan URI in the request.

  ---

  Explanation

  When receiving a '404 - Not Found' HTTP response while attempting to configure a VLAN via REST API, the most common cause is specifying an incorrect URI endpoint. The correct approach is to specify the exact resource path for VLAN

  configuration, which is /rest/v1/system/vlan. Without the correct URI, the API will return a 404 error indicating the resource is not found.

  Sending a POST request to login is necessary but not related to 404 after login.

  Syntax errors in payload lead to 400-series errors but usually not 404. Enabling REST API read/write is important but would result in different errors.

  References:

  ArubaOS-CX REST API Developer Guide

  HPE Aruba Networking REST API Documentation

  Aruba CX Switch RESTful API Examples

• Question 2:

  You are about to make a change to the HPE Aruba Networking CX switch in HPE Aruba Networking Central and are encountering the condition displayed above. What needs to be done to make a change to the switch with multi-edit?

  

  A. Select configuration status and enable edit config
  B. Enable edit config mode using the gear icon
  C. Override state
  D. Select the device in multi-edit and enable edit config mode
  B. Enable edit config mode using the gear icon

  ---

  Explanation

  To make configuration changes using multi-edit in Aruba Central when encountering the shown condition, you must enable edit config mode using the gear icon. This unlocks the configuration for editing and allows you to make batch changes

  safely.

  Selecting configuration status or device in multi-edit alone is not sufficient.

  Overriding state is not a standard approach in Aruba Central for editing configs.

  References:

  Aruba Central User Guide ?Multi-Edit Features

  HPE Aruba Configuration Management Best Practices

  Aruba Central GUI Documentation

• Question 3:

  You are configuring a CX 8325 switch and need to ensure that user traffic does not bypass access policies even during a VSX synchronization delay. Which feature should be enabled?

  A. VSX Graceful Restart
  B. VSX Shutdown-on-split
  C. VSX Keepalive Boost
  D. VSX MAC-pinning
  B. VSX Shutdown-on-split

  ---

  Explanation

  Enabling shutdown-on-split ensures the primary VSX switch disables interfaces during a split-brain condition to prevent unintended traffic forwarding.

• Question 4:

  You’re upgrading a VSX cluster with minimal downtime. Which command should be used?

  A. copy tftp://image.bin boot
  B. vsx upgrade firmware
  C. vsx update-software scp:///image.bin vrf mgmt
  D. install image scp:///image.bin
  C. vsx update-software scp:///image.bin vrf mgmt

  ---

  Explanation

  The vsx update-software command performs ISSU (In-Service Software Upgrade) with minimal service impact in VSX pairs.

• Question 5:

  You are remotely connected to an HPE Aruba Networking CX 6200F switch using SSH to change the Control Plane ACL, allowing only defined subnets to access the switch. Which AOS-CX command allows you to roll back your change if the ACL change is wrongly formed and you can no longer log in to the switch?

  A. Use the checkpoint commit command after you commit the change.
  B. Use the checkpoint auto command before you commit the change.
  C. Use the checkpoint auto command after you commit the change.
  D. Use the checkpoint commit command before you commit the change.
  B. Use the checkpoint auto command before you commit the change.

  ---

  Explanation

  When making changes remotely to critical configurations such as Control Plane ACLs on a CX switch, to protect against accidental lockout due to misconfiguration, you should enable checkpoint auto before committing the changes.

  Checkpoint auto creates an automatic rollback timer. If the administrator loses connectivity (e.g., because of the ACL change), the system automatically rolls back the change after the timer expires, preventing lockout.

  checkpoint commit is used after committing to save the checkpoint explicitly, but it does not provide automatic rollback.

  Running checkpoint auto before committing is essential to have the rollback safety net.

  References:

  ArubaOS-CX Configuration Rollback and Checkpoint Documentation

  Aruba CLI User Guide ?Checkpoint Commands

  HPE Aruba Best Practices for Remote Configuration

• Question 6:

  Which two configuration tasks must be performed when creating a device profile for an AP? (Select two.)

  A. Associate a role
  B. Associate a QoS policy
  C. Associate an LLDP group
  D. Associate a VLAN
  E. Associate an ACL
  A. Associate a role
  C. Associate an LLDP group

  ---

  Explanation

  When creating a device profile for an AP (Access Point) on Aruba CX switches, two essential configuration tasks include:

  Associating a role (Option A): This assigns specific permissions and access levels to the AP.

  Associating an LLDP group (Option C): LLDP groups define the LLDP settings for the AP, critical for device discovery and network management.

  Other options like QoS policy, VLAN, or ACL associations are typically handled separately or at the VLAN or policy level.

  References:

  Aruba AP Profile Configuration Guide

  ArubaOS-CX Network Role-Based Access Control Documentation

  HPE Aruba Network Device Profiles and LLDP Settings

• Question 7:

  Which license is required on an Aruba CX 6100 switch to enable UBT?

  A. Base
  B. Advanced
  C. Foundation
  D. UBT is unsupported
  D. UBT is unsupported

  ---

  Explanation

  The CX 6100 series does not support UBT; it lacks the hardware capabilities required for tunneling and segmentation.

• Question 8:

  You are reviewing the configuration of a VSX LAG and have noticed the command LACP fallback. Why might this have been configured?

  A. For operation using a single partner LACP interface.
  B. For backward compatibility with LACP v1.
  C. To support provisioning a gateway without LACP.
  D. To allow operation with active or passive LACP.
  C. To support provisioning a gateway without LACP.

  ---

  Explanation

  The LACP fallback command in Aruba VSX configurations allows the system to continue forwarding traffic even if LACP negotiation fails or is not established. This is useful when provisioning a gateway or link that does not support LACP,

  ensuring that the port remains operational in a static manner.

  It is not specifically for backward compatibility with LACP v1. It does not relate to operation with a single partner interface.

  It also is not about active/passive LACP modes per se.

  Therefore, LACP fallback is configured to support provisioning a gateway without LACP.

  References:

  ArubaOS-CX LACP Configuration Guide

  Aruba VSX LAG and Fallback Documentation

  HPE Aruba Networking Best Practices for Link Aggregation

• Question 9:

  A database administrator has reported intermittent connectivity issues with a SQL server hosted in the data center and has provided you with the source and destination IP addresses. Which troubleshooting methodology would be the most suitable to start with?

  A. Spot the difference
  B. Follow the path
  C. Divide and conquer
  D. Top-down/Bottom-up
  B. Follow the path

  ---

  Explanation

  Comprehensive Detailed Explanation:

  When troubleshooting intermittent connectivity issues with known source and destination IPs, the Follow the path methodology is most suitable. This involves tracing the packet flow from source to destination step-by- step, checking each

  device or segment for failures.

  Spot the difference compares configurations, which is less targeted here.

  Divide and conquer isolates sections but follow the path is more direct for connectivity.

  Top-down/bottom-up is more general troubleshooting.

  References:

  Aruba Troubleshooting Methodology Guide

  HPE Aruba Network Issue Resolution Best Practices

  Network Troubleshooting Training Materials

• Question 10:

  Your customer's CX switches are managed in HPE Aruba Networking Central. If a VSX primary switch is accidentally powered off, which alert will be triggered?

  A. Switch Reboot
  B. Switch Stack Conductor Change
  C. Switch Disconnected
  D. Switch STP Root Change
  C. Switch Disconnected

  ---

  Explanation

  When a VSX primary switch is powered off, it loses connectivity with management systems such as HPE Aruba Central. This causes the management system to trigger a "Switch Disconnected" alert because the switch is no longer reachable.

  "Switch Reboot" alerts would indicate a restart, not power off.

  "Switch Stack Conductor Change" refers to stack leadership changes, not VSX primary down.

  "Switch STP Root Change" relates to Spanning Tree Protocol root bridge changes. Hence, powering off the VSX primary causes a "Switch Disconnected" alert.

  References: HPE Aruba VSX Management and Monitoring Guide Aruba Central Documentation on Alerts and Events ArubaOS-CX VSX Best Practices