HPE6-A85 Exam Questions & Answers

Correct Answer: B

The ideal Aruba access switch for a cost-effective connection to 200-380 clients, printers and APs per distribution rack is the Aruba CX 6200. This switch series is a cloud- manageable, stackable access switch series that is ideal for enterprise

branch offices and campus networks, as well as SMBs. The CX 6200 series offers the following benefits:

Enterprise-class connectivity: The CX 6200 series supports ACLs, robust QoS, and common protocols such as static and Access OSPF routing. Power and speed for users and IoT: The CX 6200 series provides built-in 1/10GbE uplinks and

30W to 60W of Class 4 to Class 6 PoE for powering devices such as APs and cameras.

Scalable growth made simple: The CX 6200 series supports Aruba Virtual Switching Framework (VSF) that allows you to quickly grow your network to eight members in a single stack using high-performance built-in 10G SFP ports.

Management flexibility: The CX 6200 series supports a choice of management, including cloud-based and on-prem Central, CLI, switch Web GUI and programmability with AOS-CX operating system, and REST APIs.

The other options are not ideal because:

Aruba CX 6400: This switch series is a high-availability modular switch series that is ideal for versatile edge access to data center deployments. It offers more performance, scalability, and modularity than the CX 6200 series, but it is also

more expensive and complex to deploy and manage. It may not be cost-effective for connecting 200-380 clients per distribution rack. Aruba CX 6300: This switch series is a layer 3 stackable access and aggregation switch series that offers

Smart Rate and High Power PoE. It offers more features and performance than the CX 6200 series, but it is also more expensive and may not be necessary for connecting 200-380 clients per distribution rack. Aruba CX 6000: This switch

series is a layer 2 access switch series that offers PoE. It offers less features and performance than the CX 6200 series, and it does not support VSF stacking or routing protocols. It may not be sufficient for connecting 200-380 clients per

distribution rack.

References: https://www.arubanetworks.com/products/switches/access/

https://www.arubanetworks.com/products/switches/access/6200-series/

https://www.arubanetworks.com/products/switches/access/6400-series/

https://www.arubanetworks.com/products/switches/access/6300-series/

https://www.arubanetworks.com/products/switches/access/6000-series/

Correct Answer: C

Explanation: AirMatch is a feature that provides centralized RF planning and optimization service for Aruba wireless networks. It uses cloud-based algorithms and machine learning to optimize the RF performance and user experience. References:https://www.arubanetworks.com/assets/ds/DS_AirMatch.pdf

Correct Answer: D

Explanation: The signal to noise ratio (SNR) is a measure that compares the level of a desired signal to the level of background noise. SNR is defined as the ratio of signal power to the noise power, often expressed in decibels (dB). A high

SNR means that the signal is clear and easy to detect or interpret, while a low SNR means that the signal is corrupted or obscured by noise and may be difficult to distinguish or recover3. To calculate the SNR in dB, we can use the following

formula:

SNR (dB) = Signal power (dBm) - Noise power (dBm) In this question, we are given that the noise floor measures -90 dBm (0.000000001 milliwatts) and the receiver's signal strength is -65 dBm (0.000316 milliwatts). Therefore, we can plug

these values into the formula and get:

SNR (dB) = -65 dBm - (-90 dBm) SNR (dB) = -65 dBm + 90 dBm SNR (dB) = 25 dBm Therefore, the correct answer is that the SNR is 25 dBm.

References: https://en.wikipedia.org/wiki/Signal-to-noise_ratio