HP HPE7-A07 Exam With Confidence Using Practice Dumps

In the design shown:

The BGP peering between agg-sw1 and agg-sw2 is being established using loopback interfaces as the BGP neighbor addresses (10.0.0.2 and 10.0.0.4)

When BGP peering uses loopbacks, you must configure the BGP session to originate updates from the same loopback interface that the neighbor’s address resolves to

Otherwise, the TCP session fails because:

The source IP does not match the configured neighbor remote-IP which is based on the loopback address

Aruba AOS-CX requirement:

“When configuring eBGP or iBGP neighbors using loopback interfaces, apply update-source under the IPv4 unicast address family so BGP uses the correct source interface for peering.”

VoIP quality can be negatively impacted by insufficient cell overlap in AP deployment plans, which can cause poor handoffs between APs as a user moves around. This results in a degraded VoIP experience. Additionally, roaming into an area with continuous Zigbee operation can cause interference with the 5GHz frequency band, further contributing to poor VoIP call quality. The Zigbee communication protocol operates on the same frequency band as Wi-Fi and can introduce noise and interference, which leads to a reduced MOS score, as reported by the VoIP engineer.

Comprehensive and Detailed Explanation From Exact Extract of HPE Aruba Networking Switching:

Accurate and trusted time on gateways is essential for audit logs. Aruba gateways and AOS-CX switches support NTP authentication, where the device and the NTP server share cryptographic keys (key-id with MD5/SHA-1 depending on platform). The device accepts time updates only from servers that successfully authenticate, protecting against spoofed NTP responses and time-shifting attacks.

Exact extract:

“Configure NTP authentication to verify time sources. Define an authentication key, mark it as trusted, and associate it with the NTP server. The device will synchronize time only with authenticated servers.”

“Accurate logging relies on NTP. Enabling authentication helps prevent malicious or accidental tampering with system time.”

Thus, enabling and configuring NTP authentication directly secures the time clock against attacks, making B correct.

Option A would block time synchronization; C (a generic ACL) does not provide cryptographic validation; D changes only display/timezone and does not secure the source of time.

References of HPE Aruba Networking Switching documents or Study Guide:

ArubaOS 10 Gateway Management and Security Guide — “Configuring NTP authentication (keys, trusted key, server association).”

Aruba AOS-CX System Management Guide — “Securing NTP and its impact on event/audit logs.”