HPE7-A01 Free Practice Test

Which Aruba AP mode is sending captured RF data to Aruba Central for waterfall plot?

1. A. Hybrid Mode
2. B. Air Monitor
3. C. Spectrum Monitor
4. D. Dual Mode

Correct Answer: C
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/

Your customer currently has Iwo (2) 5406 modular switches with MSTP configured as their core switches. You are proposing a new solution. What would you explain regarding the Aruba CX VSX switch pair when the Primary VSX node is replaced and the system MAC is replaced?

1. A. VSX will select the MAC address from a node that is the lower ID.
2. B. Configure vMAC on the Primary VSX node under VSX to retain MAC after hardware replacement.
3. C. VSX will select the MAC address from a node that is a higher ID.
4. D. During the initial VSX configuration, the system-mac is assigned with a fixed MAC based on VSX ID.

Correct Answer: D
The system-mac command is used to configure a fixed MAC address for the VSX system. This MAC address is used as the source MAC address for all routed traffic from the VSX node. The system-mac command is highly recommended for preventing traffic disruptions when the primary VSX switch restores after the secondary VSX switch, such as during a primary switch hardware replacement or a power outage2. During the initial VSX configuration, the system-mac is assigned with a fixed MAC based on VSX ID. The system- mac command can be used to change this default MAC address if needed2. Therefore, answer D is correct.
References: 1: Aruba Campus Access documents and learning resources 2: system-mac - Aruba

You need to ensure that voice traffic sent through an ArubaOS-CX switch arrives with minimal latency What is the best scheduling technology to use for this task?

1. A. Strict queuing
2. B. Rate limiting
3. C. QoS shaping
4. D. DWRR queuing

Correct Answer: A
Strict queuing is the best scheduling technology to use for voice traffic on an AOS-CX switch. Scheduling is a mechanism that determines how packets are transmitted from different queues on an egress port. Strict queuing is a scheduling method that gives the highest priority queue absolute preference over all other queues, regardless of their size or utilization. Voice traffic should be assigned to the highest priority queue and scheduled with strict queuing to ensure minimal latency and jitter. The other options are incorrect because they are either not scheduling methods or not optimal for voice traffic. 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

Your customer has four (4) Aruba 7200 Series Gateways and two (2) 7000 Series Gateways. The customer wants to form a cluster with these Gateways. What design consideration would prevent you from using all of those Gateways?

1. A. Multiple versions between Gateways in the same cluster profile are not allowed AOS 10.x.
2. B. A heterogeneous cluster is not supported in AOS 10.x.
3. C. The AP load should be lowest value of worst-case scenario load.
4. D. A combination of 7200 series and 7000 series gateways supports up to 4 nodes

Correct Answer: A
The reason is that AOS 10.x does not support clustering gateways with different versions in the same cluster profile. A cluster profile defines the configuration settings for a group of gateways that are managed by Aruba Central.
According to the Aruba documentation2, ??You can combine 7200 Series and 7000 Series gateways in the same cluster with a maximum size of four devices with reduced AP client capacity on 7000 Series gateways.??

Which feature allows the device to remain operational when a remote link failure occurs between a Gateway cluster and a RADIUS server that is either in the cloud or a datacenter?

1. A. MAC caching
2. B. MAC Authentication
3. C. Authentication survivability
4. D. Opportunistic key caching

Correct Answer: C
Authentication survivability is a feature that allows the device to remain operational when a remote link failure occurs between a Gateway cluster and a RADIUS server that is either in the cloud or a datacenter. Authentication survivability enables the Gateway cluster to cache successful authentication requests from the RADIUS server and use them to authenticate clients when the RADIUS server is unreachable. Authentication survivability also allows clients to use MAC caching or MAC authentication bypass (MAB) methods to access the network when the RADIUS server is down. References: https://www.arubanetworks.com/assets/tg/TG_AuthSurvivability.pdf