Question 1

How is Multicast Transmission Optimization implemented in an HPE Aruba wireless network?

Accepted Answer

multicast transmission optimization is a feature that allows the IAP to select the optimal rate for sending broadcast and multicast frames based on the lowest of
unicast rates across all associated clients1. When this option is enabled, multicast traffic can be sent at up to 24 Mbps. The default rate for sending frames for 2.4
GHz is 1 Mbps and 5.0 GHz is 6 Mbps. This option is disabled by default1.

Question 2

When setting up an Aruba CX VSX pair, which information does the Inter-Switch Link Protocol configuration use in the configuration created?

Accepted Answer

The reason is that the Inter-Switch Link Protocol (ISLP) is a protocol that enables VSX stack join and synchronization between two VSX peer switches. ISLP uses
a hello interval to exchange control messages between the switches.
The hello interval is a parameter that specifies the time interval between sending hello messages. The default value of the hello interval is 1 second. The hello
interval can be configured from 1 second to 10 seconds. https://www.arubanetworks.com/techdocs/AOS-CX/10.04/HTML/5200-6728/index.html

Question 3

Your customer is having issues with Wi-Fi 6 clients staying connected to poor-performing APs when a higher throughput APs are closer. Which technology should
you implement?

Accepted Answer

Wi-Fi 6 is an industry certification for products that support the new wireless standard 802.11ax, also known as ??high-efficiency wireless??. Wi-Fi 6 offers
increased capacities, improved resource utilization and higher throughput speeds than previous standards.
Option B: ClientMatch
This is because option B shows how to use ClientMatch to optimize the wireless performance of Wi-Fi 6 clients on a UniFi network. ClientMatch is a feature that
uses machine learning to analyze the traffic patterns of each client and assign them to the best available AP based on their location, device type, and network
conditions2.
Therefore, option B is the best technology to implement for your customer??s issue.
1: https://help.ui.com/hc/en-us/articles/221029967-UniFi-Network-Optimizing-Wireless-Connectivity 2: https://help.ui.com/hc/en-us/articles/360012947634-UniFiNetwork- Optimizing-Wireless-Speeds

Question 4

A company recently deployed new Aruba Access Points at different branch offices Wireless 802.1X authentication will be against a RADIUS server in the cloud.
The security team is concerned that the traffic between the AP and the RADIUS server will be exposed.
What is the appropriate solution for this scenario?

Accepted Answer

This is the appropriate solution for this scenario where wireless 802.1X authentication will be against a RADIUS server in the cloud and the security team is
concerned that the traffic between the AP and the RADIUS server will be exposed. RadSec, also known as RADIUS over TLS, is a protocol that provides
encryption and authentication for RADIUS traffic over TCP and TLS. RadSec can be configured on both the AP and the RADIUS server to establish a secure
tunnel for exchanging RADIUS packets. The other options are incorrect because they either do not provide encryption or authentication for RADIUS traffic or do
not involve RadSec. References: https://www.securew2.com/blog/what-is-radsec/ https://www.cloudradius.com/radsec-vs- radius/

Question 5

Which standard supported by some Aruba APs can enable a customer to accurately locate wireless client devices within a few meters?

Accepted Answer

The standard that is supported by some Aruba APs and can enable a customer to accurately locate wireless client devices within a few meters is A. 802.11mc.
* 802.11mc is an IEEE standard that enables computing devices to measure the distance to nearby Wi-Fi access points using a technique called Fine Timing
Measurement (FTM). FTM uses precise timestamps to calculate the round-trip time of Wi-Fi frames between the device and the access point, and then converts it
to a distance estimate. By using multiple access points and triangulation methods, the device can determine its location with high accuracy1.
According to the Aruba document 802.11mc Support, this feature is supported on 500 Series, 510 Series, 530 Series, 550 Series, 560 Series and 570 Series
access points. These APs act as FTM responders to time measurement queries sent from a client. To configure the AP to send FTM responses, you need to
enable the ftm-responder-enable parameter in the WLAN SSID profile1.

Question 6

A system engineer needs to preconfigure several Aruba CX 6300 switches that will be sent to a remote office An untrained local field technician will do the rollout
of the switches and the mounting of several AP-515s and AP-575S. Cables running to theAPs are not labeled.
The VLANs are already preconfigured to VLAN 100 (mgmt), VLAN 200 (clients), and VLAN 300 (guests)
What is the correct configuration to ensure that APs will work properly?
A)
B)
C)

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D)

Accepted Answer

Option C is the correct configuration to ensure that APs will work properly. It uses the ap command to configure a port profile for APs with VLAN 100 as the native
VLAN and VLAN 200 and 300 as tagged VLANs. It also enables LLDP on the ports to discover the APs and assign them to the port profile automatically. The other
options are incorrect because they either do not use the ap command, do not enable LLDP, or do not configure the VLANs correctly. References:
https://www.arubanetworks.com/techdocs/AOS-CX_10_08/UG/bk01-ch02.html https://www.arubanetworks.com/techdocs/AOS-CX_10_08/UG/bk01-ch03.html

Question 7

A customer is using Aruba Cloud Guest, but visitors keep complaining that the captive portal page keeps coming up after devices go to sleep Which solution
should be enabled to deal with this issue?

Accepted Answer

MAC Caching is a feature that allows a guest user to bypass the captive portal page after the first authentication based on their MAC address1 MAC Caching can
be enabled under the splash page settings in Aruba Cloud Guest2 MAC Caching can improve the user experience and reduce the network overhead by eliminating
the need for repeated authentication.

Question 8

A company deployed Dynamic Segmentation with their CX switches and Gateways After performing a security audit on their network, they discovered that the
tunnels built between the CX switch and the Aruba Gateway are not encrypted. The company is concerned that bad actors could try to insert spoofed messages on
the Gateway to disrupt communications or obtain information about the network.
Which action must the administrator perform to address this situation?

Accepted Answer

PAPI is the protocol that is used to establish tunnels between the CX switch and the Aruba Gateway for Dynamic Segmentation1. By default, PAPI uses a simple
checksum to verify the integrity of the messages, but it does not encrypt the payload2. This could expose the network to spoofing or replay attacks by malicious
actors. To address this situation, the administrator must enable Enhanced PAPI security, which uses AES-256 encryption and HMAC-SHA1 authentication to
protect the tunnel traffic2. Enhanced PAPI security can be enabled on the CX switch by using the command system papi enhanced- security enable3. This will

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ensure that the tunnels built between the CX switch and the Aruba Gateway are encrypted and authenticated.

Question 9

Your Aruba CX 6300 VSF stack has OSPF adjacency over SVI 10 with LAG 1 to a neighboring device The following configuration was created on the switch:
A)
B)
C)
D)

Accepted Answer

OSPF (Open Shortest Path First) is a routing protocol that uses link-state information to calculate the best path to each destination in the network. OSPF

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establishes adjacencies with neighboring routers to exchange routing information and maintain a consistent view of the network topology1.
To establish an OSPF adjacency, the routers need to have some common parameters, such as the area ID, the network type, the hello interval, the dead interval,
and the authentication method2. The routers also need to have a matching subnet mask on the interface that connects them3.
In this case, the Aruba CX 6300 VSF stack has an SVI (Switched Virtual Interface) on VLAN 10 with an IP address of 10.1.1.1/24 and a LAG (Link Aggregation
Group) on port 1/1/1 and port 2/1/1 that connects to a neighboring device. The SVI is configured with OSPF area 0 and network type broadcast. The LAG is
configured with OSPF passive mode, which means that it will not send or receive OSPF hello packets.
The neighboring device has an interface with an IP address of 10.1.1.2/24 and a LAG on port 1/0/1 and port 2/0/1 that connects to the Aruba CX 6300 VSF stack.
The interface is configured with OSPF area 0 and network type broadcast.
Since the Aruba CX 6300 VSF stack and the neighboring device have the same area ID, network type, subnet mask, and default hello and dead intervals on their
interfaces, they will be able to establish an OSPF adjacency over SVI 10 with LAG 1. The OSPF passive mode on the LAG will not affect the adjacency, because it
only applies to the LAG interface, not the SVI interface.

Question 10

A customer has a site with 200 AP-515 access points 75AP-565 access points installed.
The customer is rolling out new mobile phones with Wi-Fi-calling. 802.1X is in use for authentication
What should be enabled to ensure the best roaming experience?

Accepted Answer

https://www.howtogeek.com/794724/what-is-wi-fi-calling/ 2:
https://www.networkcomputing.com/networking/your-network-optimized-wifi-calling 3: https://www.arubanetworks.com/techdocs/AOSCX/10.10/HTML/monitoring_6300-6400/Content/Chp_LEDs/fro-pan-led-630.htm
Wi-Fi calling is a feature that allows you to make or receive voice calls over Wi-Fi instead of cellular network. Wi-Fi calling can provide better voice quality and
reliability in areas with poor or no cellular coverage.