Place all three VRFs in the same OSPF process on Switch-1 is not a valid strategy for meeting this goal of enabling devices in VRF B and VRF C to reach shared resources in VRF A. This strategy would not work because OSPF does not support multiple VRFs in the same process on ArubaOS-CX switches.  Each VRF must have its own OSPF process with a unique process ID 1 .

 ArubaOS-CX switches are designed for enterprise campus, aggregation, and data center networking use cases 1 .  ArubaOS-CX switches support a leaf-spine topology, which is a two-layer network architecture that provides high performance, scalability, and reliability for data center networks 2 .  Aruba CX 8325 switches are compact 1U switches that offer high density and high speed connectivity for both leaf and spine switches 3 .  Aruba CX 8325 switches can support up to 32 ports of 100GbE or 48 ports of 25GbE and 8 ports of 100GbE 3 .  For a data center that requires 64 leaf switches, Aruba CX 8325 switches can be a good choice for both the leaf and spine switches, as they can provide enough bandwidth and port density for the network traffic 3 . Therefore, this is a correct positioning of ArubaOS-CX switches in the data center, and the correct answer is yes.  For more information on ArubaOS-CX switches and data center solutions, refer to the Aruba Data Center Network Specialist (ADCNS) certification datasheet and the Aruba CX Switch Series datasheets 3  .

A schedule profile is a feature of ArubaOS-CX that determines the order and service of queues for transmission 1 2 3 .  A schedule profile must be configured on every interface at all times 2 3 .  The switch supports three scheduling algorithms: Guaranteed Minimum Bandwidth (GMB), Strict, and Strict EQS 2 3 .  Strict scheduling gives absolute priority to a queue over other queues, regardless of the bandwidth allocation 2 3 .  If the profile mixes strict priority scheduling with another scheduling algorithm, the strict priority queue must be the highest numbered queue 2 3 . Therefore, this is a rule for configuring schedule profiles on an ArubaOS-CX switch, and the correct answer is yes.  For more information on schedule profiles and QoS, refer to the Aruba Data Center Network Specialist (ADCNS) certification datasheet 1  and the QoS Guide for your switch model 2 3 .

NetEdit 2.0 is a network management tool that allows you to configure, monitor, and troubleshoot ArubaOS-CX switches. NetEdit 2.0 can discover switches using different methods, such as IP range scan, LLDP neighbors, or manual entry. After it discovers a switch, NetEdit 2.0 does not enable SNMP on the switch, if disabled. SNMP is a protocol that allows NetEdit 2.0 to collect information and statistics from the switches, but it is not required for discovery or management.  NetEdit 2.0 can use other protocols, such as REST API or SSH, to communicate with the switches 1 . Therefore, this is not something that NetEdit 2.0 does after it discovers a switch.

Data center networks are typically less oversubscribed than campus networks is a difference between a typical data center network’s requirements and a typical campus network’s requirements. Oversubscription is the ratio of potential maximum demand to available capacity on a network link or device.  Data center networks typically have higher bandwidth and lower latency requirements than campus networks, so they need to minimize oversubscription as much as possible 1 .

Different virtual MAC must be used for IPv4 and IPv6 Active Gateway is not a true statement about EVPN and IPv6 for configuring an EVPN solution for a dual-stack IPv4 and IPv6 protocol in the overlay networks. Active Gateway is a feature that provides first-hop redundancy for hosts connected to VTEPs using anycast gateway addresses.  Active Gateway can use the same virtual MAC address for both IPv4 and IPv6 protocols on the same VNI 2 .

The ArubaOS-CX portfolio for data center networks consists of different switches for different roles.  The Aruba 8400 switches are designed for the core and aggregation layers, while the Aruba CX 6300 and CX 6400 switches are designed for the leaf layer 1 . Therefore, deploying Aruba 8400 switches as data center leaf switches is not how you should position switches in the ArubaOS-CX portfolio for data center networks. Reference: https://www.arubanetworks.com/solutions/data-center-modernization/

A physical interface using Layer 2 mode cannot be attached to a VRF on an ArubaOS-CX switch. A VRF is a virtual routing and forwarding instance that provides logical separation of routing tables on a switch.  A physical interface can only be attached to a VRF if it is using Layer 3 mode and has an IP address assigned to it 1 .

Deploying Aruba CX 8400 switches as core switches for very large three-tier data center networks is how you should position switches in the ArubaOS-CX portfolio for data center networks.  ArubaOS-CX is an operating system that provides advanced features and automation capabilities for data center networks 1 .  It runs on various switch models that are designed for different roles and scenarios in the data center 1 .  Aruba CX 8400 switches are modular switches that offer high performance, scalability, and reliability for the core layer of very large three-tier data center networks 1 . The statement is true because it correctly describes how to position Aruba CX 8400 switches in the ArubaOS-CX portfolio for data center networks.

Agents do not collect data every minute and send the data to a centralized SNMP server in SNMP traps.  NAE is a feature that provides network operators with distributed analytics for faster troubleshooting and resolution of network-impacting issues 1 .  Agents are scripts that run on ArubaOS-CX switches and collect data from various sources, such as CLI commands, REST APIs, or syslog messages 1 .  Agents can also define conditions and actions based on the collected data 1 .  Agents do not send the data to a centralized SNMP server, but store it locally on the switch 1 .  Agents can also send alerts to external systems, such as email servers or syslog servers, but not in SNMP traps 1 . The statement is false because it incorrectly describes how NAE agents work.