HP HPE7-A02 Exam With Confidence Using Practice Dumps

To minimize disruption time if an AOS-CX switch reboots while implementing DHCP snooping and ARP inspection, you should save the IP-to-MAC bindings to external storage. This ensures that the DHCP snooping and ARP inspection tables, which are crucial for preventing spoofing attacks, are preserved across reboots. When the switch restarts, it can reload these bindings from the external storage, thereby maintaining network security and reducing the downtime associated with rebuilding these tables.

1.Preserving Bindings: Saving IP-to-MAC bindings to external storage ensures that these critical security tables are not lost during a reboot, maintaining network integrity.

2.Security Continuity: This practice helps to quickly restore security features like DHCP snooping and ARP inspection, minimizing the window of vulnerability.

3.Operational Efficiency: By preserving these bindings, the switch can resume normal operations faster, reducing disruption to network services.

Installing Agents for SSE (Secure Service Edge):

Agents installed on remote users' devices allow posture checks (e.g., antivirus status, OS version) to ensure compliance.

Based on the results of the posture checks, different permissions and security policies can be applied dynamically.

This improves the security posture of remote users before granting access to resources.

Option A: Correct. Agents enable posture checks and enforce conditional access based on compliance.

Option B: Incorrect. Admins manage SSE policies centrally, not via agents.

Option C: Incorrect. Access to private servers via SSH does not require agents; it relies on policies and tunnels.

Option D: Incorrect. Local sandboxing is generally a function of endpoint protection solutions, not SSE agents.

Comprehensive Detailed Explanation

The configuration includes the command aaa authentication allow-fail-through, which specifies that if the TACACS+ server fails to respond (e.g., times out), the switch will proceed to the next authentication method in the sequence, which is local. In this scenario:

The switch first attempts to authenticate the user against the TACACS+ server.

When the TACACS+ server fails to respond, the switch falls back to local authentication.

The user netadmin is a local account configured on the switch and belongs to the operators group.

As a result, the user is successfully authenticated locally and is granted operator level access.

References

Aruba AOS-CX User Guide: Authentication fallback mechanisms.

TACACS+ fallback behavior for HPE Aruba switches.