HPE6-A47 Dumps with Practice Exam Questions Answers

This answer is correct because it matches the scenario for which the Aruba backplane stacking technology is designed. Aruba backplane stacking technology allows up to 10 switches to be interconnected using high-speed backplane cables, creating a single logical device with a single IP address and configuration. This simplifies the management and operation of the network, as well as the redundancy design, as the stack can operate in ring or chain topology and provide fast failover in case of link or switch failure. This technology is suitable for customers who need to deploy a pair of aggregation switches in the same closet, as it reduces the number of devices and links to manage, and provides high availability and scalability for the network.

The other options are incorrect because:

• B. The customer needs to simplify the deployment of core switches which are located in different closets for redundancy purposes. This scenario is not suitable for Aruba backplane stacking technology, as it requires the switches to be physically close to each other and connected with backplane cables. A better option for this scenario would be to use Aruba Virtual Switching Framework (VSF) technology, which allows up to twoswitches to be interconnected using standard Ethernet links, creating a virtual switch that can span across different closets or racks.
• C. The customer needs to expand the network and make it possible for the current core switches to support more MAC forwarding and ARP entries. This scenario is not suitable for Aruba backplane stacking technology, as it does not increase the MAC or ARP table size of the switches. The MAC and ARP table size is determined by the hardware specifications of each switch model, and stacking them together does not change that. A better option for this scenario would be to upgrade the core switches to a higher-end model that supports more MAC and ARP entries, or to segment the network into smaller subnets to reduce the MAC and ARP traffic.
• D. The customer needs to deploy a switch at a branch office and have the switch automatically discover and join the network stack at the main office. This scenario is not suitable for Aruba backplane stacking technology, as it requires the switches to be on the same LAN and connected with backplane cables. A better option for this scenario would be to use Aruba Central, which is a cloud-based management platform that allows remote provisioning and monitoring of Aruba switches and other devices. Aruba Central can automatically discover and join the switch to the network, and apply the configuration and policies from the main office.

References:

• Aruba 2930M Switch Series - Data sheet)
• ArubaOS-Switch Virtual Switching Framework - Configuration guide)
• Aruba Central - Data sheet)

In a high-client device turnover environment like an airport, the network management and monitoring solution needs to handle a large number of devices connecting and disconnecting frequently. This can put a significant load on the system. Therefore, it would be beneficial to recommend additional hardware resources beyond those typically recommended for the AirWare platform. This would ensure that the system can handle the high turnover and provide reliable service1.

References:

• Solution Architect - Scaled Agile Framework

The customer wants to use certificates to authenticate user devices, which means that they need a strong and secure method of verifying the identity of the devices that connect to the employee WLAN. The best option for this is to use EAP-TLS instead of PEAP-MSCHAPv2. EAP-TLS stands for Extensible Authentication Protocol-Transport Layer Security, and it is a protocol that uses certificates on both the client and the server side to establish a mutual authentication and a secure channel for data exchange. EAP-TLS is considered the most secure EAP method, as it prevents common attacks such as dictionary attacks, man-in-the-middle attacks, and replay attacks.

The other options are not suitable for the customer requirements:

• Option B is incorrect because TKIP encryption is weaker than AES encryption. TKIP stands for Temporal Key Integrity Protocol, and it is an older encryption method that was designed to replace WEP, which had serious security flaws. However, TKIP also has some vulnerabilities, and it is not recommended for modern WLANs. AES stands for Advanced Encryption Standard, and it is a newer and stronger encryption method that provides better security and performance for WLANs.
• Option C is incorrect because WPA2-PSK is less secure than WPA2-Enterprise. WPA2-PSK stands for Wi-Fi Protected Access 2-Pre-Shared Key, and it is a security mode that uses a common passphrase or key to authenticate all devices that connect to the WLAN. However, this passphrase or key can be easily compromised or shared, and it does not provide individual authentication or encryption for each device. WPA2-Enterprise stands for Wi-Fi Protected Access 2-Enterprise, and it is a security mode that uses a RADIUS server to authenticate each device individually and dynamically generate encryption keys for each session. WPA2-Enterprise provides better security and scalability for WLANs.
• Option D is incorrect because TTLS does not use certificates to authenticate user devices. TTLS stands for Tunneled Transport Layer Security, and it is a protocol that uses certificates only on the server side to establish a secure tunnel for data exchange. The client side can use different methods to authenticate, such as passwords, tokens, or certificates. However, TTLS does not require certificates on the client side, and it is less secure than EAP-TLS.

References:

• ArubaOS 8.5 User Guide)
• ArubaOS 8.5 Security Guide)
• Aruba Certified Design Professional Official Certification Study Guide (HPE6-A47))

To plan a wireless solution upgrade for printers, the architect needs to know whether the printers support 802.1X and the 802.11 standards supported by the printer. These two factors are important for ensuring the compatibility, security, and performance of the wireless network.

• 802.1X is a standard for network access control that provides authentication, authorization, and encryption for devices that connect to a wireless network1. It prevents unauthorized devices from accessing the network resources and protects the data transmission from eavesdropping or tampering. If the printers support 802.1X, the architect can design a wireless solution that leverages this feature to enhance the security and compliance of the network. If the printers do not support 802.1X, the architect may need to consider alternative methods of securing the wireless access, such as MAC address filtering, VPN, or WPA2-PSK2.
• 802.11 is a set of standards that define the specifications and protocols for wireless communication3. Different 802.11 standards have different characteristics, such as frequency, bandwidth, data rate, range, and compatibility. For example, 802.11a operates at 5 GHz and offers up to 54 Mbps, while 802.11b operates at 2.4 GHz and offers up to 11 Mbps3. If the printers support the same or higher 802.11 standards as the wireless network, the architect can design a wireless solution that ensures the optimal performance and reliability of the wireless communication. If the printers support lower or different 802.11 standards than the wireless network, the architect may need to consider the impact of the compatibility issues, such as interference, congestion, or degradation4.

The other options are not as relevant for planning a wireless solution upgrade for printers. Whether the printers are physically locked down or not does not affect the wireless connectivity, unless the lock interferes with the antenna or signal reception. The identity of users who need to access printers is more related to the access control and user management policies, rather than the wireless solution design. Whether the printers support PoE or not does not affect the wireless connectivity, unless the power source is unreliable or insufficient.

References:

• 1: https://www.arubanetworks.com/techdocs/ArubaOS_86_Web_Help/Content/arubaos-solutions/1-overview/802.1x.htm
• 2: https://www.arubanetworks.com/techdocs/ArubaOS_86_Web_Help/Content/arubaos-solutions/1-overview/securing-wireless-access.htm
• 3: https://www.arubanetworks.com/techdocs/ArubaOS_86_Web_Help/Content/arubaos-solutions/1-overview/802.11-standards.htm
• 4: https://www.arubanetworks.com/techdocs/ArubaOS_86_Web_Help/Content/arubaos-solutions/1-overview/compatibility-issues.htm

802.1X authentication without tunnelled node is a form of port-based network access control that uses the Extensible Authentication Protocol (EAP) to authenticate users and devices on a wired network. This form of authentication provides several benefits, such as:

• It enables user access control and ensures only authorized users connect. This prevents unauthorized access to the network and its resources, and enhances security and compliance.
• It allows dynamic assignment of VLANs and roles based on user identity and device type. This simplifies network management and improves user experience.
• It supports multiple authentication methods, such as certificates, passwords, tokens, or biometrics. This provides flexibility and choice for users and administrators.
• It integrates with Aruba ClearPass Policy Manager (CPPM) for centralized policy enforcement and visibility. This enables granular control and monitoring of wired user traffic and devices. References:
• Aruba 2930M Switch Series - Data sheet)
• Aruba ClearPass Policy Manager - Data sheet)
• ArubaOS-Switch Wired Access with ClearPass - Configuration guide)