MAC Caching is a feature that allows a guest user to bypass the captive portal page after the first authentication based on their MAC address 1  MAC Caching can be enabled under the splash page settings in Aruba Cloud Guest 2  MAC Caching can improve the user experience and reduce the network overhead by eliminating the need for repeated authentication.

The capability that enables plug-and-play provisioning of access points in an HPE Aruba network is the UCC Service. The UCC Service is a cloud-based service that allows the access points to automatically discover and connect to the Aruba Central management platform without any manual intervention. The UCC Service also provides zero-touch configuration, firmware updates, and monitoring for the access points 1 .

The other options are incorrect because:

B. LLDP-MED: LLDP-MED is a protocol that enhances the interoperability between network devices and IP phones. It does not enable plug-and-play provisioning of access points 2 .

C. SRTP: SRTP is a protocol that provides encryption and authentication for voice and video traffic. It does not enable plug-and-play provisioning of access points 3 .

D. CSMA: CSMA is a protocol that regulates how devices share a common medium, such as a wireless channel. It does not enable plug-and-play provisioning of access points.

a) Support up to 10 devices per stack - >   VSF  

b) Support two devices per stack - >   VSX  

c) Individual ISL links up to 400G are supported - >   VSX  

d) individual ISL links up to 50G are supported - >   VSF  

e) A maximum aggregate ISL bandwidth of 200G is supported - >   VSF

Encryption is a feature supported by SNMPv3 that provides an advantage over SNMPv2c. Encryption protects the confidentiality and integrity of SNMP messages by encrypting them with a secret key. SNMPv2c does not support encryption and relies on community strings for authentication and authorization, which are transmitted in clear text and can be easily intercepted or spoofed. Transport mapping, community strings, and GetBulk are features that are common to both SNMPv2c and SNMPv3. References: https://www.arubanetworks.com/techdocs/ArubaOS_86_Web_Help/Content/arubaos-solutions/snmp/snmp.htm https://www.arubanetworks.com/techdocs/ArubaOS_86_Web_Help/Content/arubaos-solutions/snmp/snmpv3.htm

To create a new OSPF configuration for a separate routing table, you need to create a new OSPF process ID with vrf name. This will create a new OSPF instance that is associated with the specified VRF and its routing table. The other options are incorrect because they either do not create a new OSPF instance or do not associate it with a VRF. References: https://www.arubanetworks.com/techdocs/AOS-CX/10.04/HTML/5200-6728/bk01-ch02.html https://www.arubanetworks.com/techdocs/AOS-CX/10.04/HTML/5200-6728/bk01-ch03.html

This is because Best Effort traffic is all other kinds of non-detrimental traffic that are not sensitive to Quality of Service metrics (jitter, packet loss, latency).  A typical example would be peer-to-peer and email applications 2 .  Background traffic is a type of traffic that is used for system maintenance or backup purposes and does not affect the performance or availability of the network 3 .

Therefore, Best Effort traffic has a higher priority than Background traffic in terms of network resources allocation and management.

1 : https://www.arubanetworks.com/techdocs/ArubaDocPortal/content/docportal.htm  2 : https://stackoverflow.com/questions/33854306/best-effort-traffic-and-real-time-traffic-difference  3 : https://www.informit.com/articles/article.aspx?p=25315 & seqNum=4

To onboard a new UXI in an existing environment with 802.1X authentication, you need to use the UXI app on your smartphone and connect the UXI via Bluetooth. The UXI app allows you to scan the QR code on the UXI sensor and configure its network settings, such as SSID, password, IP address, etc. The Bluetooth connection allows you to communicate with the UXI sensor without requiring any network access or cellular connection. The other options are incorrect because they either do not use the UXI app or do not use Bluetooth. References: https://www.arubanetworks.com/products/network-management-operations/analytics-monitoring/user-experience-insight-sensors/ https://help.centralon-prem.arubanetworks.com/2.5.4/documentation/online_help/content/nms-on-prem/aos-cx/get-started/uxi-sensor.htm

Spectrum Monitor is an Aruba AP mode that is sending captured RF data to Aruba Central for waterfall plot. Spectrum Monitor is a mode that allows an AP to scan all channels in both 2.4 GHz and 5 GHz bands and collect information about the RF environment, such as interference sources, noise floor, channel utilization, etc. The AP then sends this data to Aruba Central, which is a cloud-based network management platform that can display the data in various formats, including waterfall plot. Waterfall plot is a graphical representation of the RF spectrum over time, showing the frequency, amplitude, and duration of RF signals. The other options are incorrect because they are either not AP modes or not sending RF data to Aruba Central. References: https://www.arubanetworks.com/techdocs/ArubaOS_86_Web_Help/Content/arubaos-solutions/1-overview/spectrum_monitor.htm https://www.arubanetworks.com/techdocs/ArubaOS_86_Web_Help/Content/arubaos-solutions/1-overview/waterfall_plot.htm https://www.arubanetworks.com/products/network-management-operations/aruba-central/