HPE7-A08 Exam Dumps - HPE Aruba Networking Certified Professional – Switching

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.

Valid Network Analytics Engine (NAE) agent actions include:

Running CLI commands (Option A), allowing automated command execution for remediation or data collection.

Generating local system logs (Option C) for event tracking and audit purposes.

Other options:

Generating SNMP traps (B) and starting/stopping packet captures (D) are not typical NAE actions.

Creating a new TAC case (E) is an external process, not an automated NAE action.

The Aruba CX switches REST API supports the JSON (JavaScript Object Notation) data format for both requests and responses. JSON is widely adopted for REST APIs due to its lightweight and readable format.

XML and YAML are not supported for REST API on CX switches.

SOAP is a different protocol not used by Aruba CX REST API.

Therefore, JSON is the correct and supported data format.

Comprehensive Detailed Explanation:

For live upgrading a VSX cluster, the correct procedure is to use the vsx update-software option, which allows in-service software upgrade (ISSU) with minimal disruption by upgrading switches one at a time while maintaining synchronization.

issu update-software is not a recognized command in Aruba CX.

Reloading the primary first risks service disruption.

Compatibility mode is not required prior to reboot.

In a VSX cluster, certain configurations such as DHCP relay need to be synchronized between both nodes. To sync DHCP relay configuration from the primary to the secondary, the command:

vsx-sync dhcp-relay

must be added under the VSX configuration on the primary switch. This ensures that DHCP relay settings are pushed to the secondary member automatically.

Adding vsx-sync ip-helper relates to IP helper addresses, not DHCP relay specifically.

Adding the sync command on the secondary has no effect as synchronization originates from primary.

To isolate wired ports on the same VLAN on a large scale (such as hotel rooms) but allow communication within the same VLAN for common areas, Private VLANs (PVLANs) are recommended. PVLANs allow segmentation within a single VLAN by dividing it into primary and secondary VLANs, controlling communication between ports.

VPN and VXLAN are overlay technologies for different purposes.

UBT (User-Based Tunneling) is related to wireless user segmentation, not wired port isolation.

Therefore, PVLANs provide the simplest and most effective solution to isolate room ports within a single VLAN.