HPE7-A05 practice question 15 of 35

What is the purpose of the Aruba Smart Rate ports during the installation of the solution?

Full set: 100 questions
Answer options
A: Manage power consumption
B: Optimize network performance Correct answer
C: Secure data transmission
D: Implement redundancy protocols
Correct Answer:
B. Optimize network performance
Explanation

Aruba Smart Rate (also known as HPE Smart Rate) is a multi-gigabit Ethernet technology that allows network ports to operate at speeds of 1, 2.5, 5, and 10 Gbps over standard twisted-pair copper cabling. Its primary purpose is to optimize network performance by eliminating the 1 Gbps bottleneck that occurs when connecting high-throughput devices, such as Wi-Fi 6 (802.11ax) and Wi-Fi 6E access points, to the network. By providing higher bandwidth on the access layer switch port, Smart Rate ensures that the wired infrastructure can support the full performance capabilities of modern wireless and IoT devices.

Why Incorrect

A. Manage power consumption: Power management is handled by Power over Ethernet (PoE) standards (PoE, PoE+, PoE++), which are often available on Smart Rate ports but are a separate function from the port's speed capability.
C. Secure data transmission: Data security is implemented through protocols like MACsec or encryption at higher layers of the network stack, not by the physical layer speed technology of Smart Rate.
D. Implement redundancy protocols: Redundancy is achieved through Layer 2 protocols like Link Aggregation (LACP) or Spanning Tree Protocol (STP), which are independent of the port's physical transmission speed.

References

1. Aruba CX 6300 Switch Series Data Sheet. Page 2, under the "Performance and Power" section, states: "This series has built-in 1/10/25/50GbE uplinks and supports high density HPE Smart Rate (1/2.5/5GbE) multi-gigabit Ethernet... This is ideal for advanced APs and IoT devices." This directly links Smart Rate to supporting high-performance devices to prevent bottlenecks.

2. Aruba Campus for Midsize Networks Validated Solution Guide (April 2022). Page 11, Section "Access Layer," describes the use of Aruba CX 6300M switches: "These switches provide multi-gigabit HPE Smart Rate Ethernet ports for connecting high-speed APs." This confirms the purpose is to accommodate the performance needs of modern access points.

3. ArubaOS-CX 10.10 Fundamentals Guide. In the "Features" chapter, under the "Multi-gigabit Ethernet" section, the guide explains that this technology allows switches to "support speeds of 2.5 Gbps and 5 Gbps on existing cable plants," which is a direct method of performance optimization for new, faster devices.

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