Question 1

Which CLI command configures a trust boundary for incoming traffic based on DSCP values?

Accepted Answer

A

Explanation: The qos trust dscp command is configured within an interface context on an HPE ArubaOS-CX switch. This command establishes a trust boundary, instructing the switch to honor the Differentiated Services Code Point (DSCP) value present in the IP header of incoming packets. By trusting the DSCP marking, the switch uses this value to classify the traffic and assign it to the appropriate internal quality of service queue for prioritization. This ensures that upstream QoS policies are maintained as traffic traverses the switch.

Question 2

Which CLI command enables LACP on a port for link aggregation?

Accepted Answer

B

Explanation: This command sets the Link Aggregation Group to use LACP in 'active' mode. In LACP, the operational mode (active or passive) is a property of the logical aggregate interface (the group), not the individual physical member ports. Setting the LAG to 'active' mode is the essential step to enable the switch to actively initiate LACP negotiations on all member ports. While the specific command syntax lacp group 1 mode active is not native to ArubaOS-CX, it correctly represents the concept of enabling LACP at the group level, which is the most accurate choice among the options provided. The correct ArubaOS-CX command is lacp mode active under the interface lag context.

Question 3

Which Aruba Central feature enables firmware updates across multiple CX switches simultaneously?

Accepted Answer

B

Explanation: Aruba Central uses Firmware Compliance policies applied to groups of devices to manage and standardize software versions. An administrator can define a specific firmware version for a group containing multiple CX switches. Central then identifies any non-compliant switches within that group and allows the administrator to schedule simultaneous or rolling upgrades to bring all devices to the desired version. This feature centralizes and automates the firmware update process across a fleet of switches, ensuring consistency and simplifying management.

Question 4

Which two features in Aruba CX switches help in network segmentation and security enforcement? (Select two)

Accepted Answer

B, C

Explanation: Dynamic Segmentation and EVPN/VXLAN are fundamental features in Aruba CX switches for modern network segmentation and security. Dynamic Segmentation centralizes policy enforcement by tunneling user traffic from an access switch to an Aruba Gateway. This allows for consistent, role-based policies to be applied to users and devices, regardless of their connection point, effectively creating micro-segments. EVPN/VXLAN creates a network overlay, allowing Layer 2 segments (VXLAN Network Identifiers or VNIs) to be extended across a Layer 3 underlay. This is a highly scalable method for creating macro-segments, isolating traffic between different tenants or departments across a campus or data center.

Question 5

Which Aruba CX campus switch series is optimized for high-density Layer 3 routing and stacking?

Accepted Answer

C

Explanation: The Aruba CX 6300 Switch Series is specifically designed for enterprise campus access, aggregation, and core deployments. It features the Aruba Virtual Stacking Framework (VSF), which allows up to 10 switches to be stacked and managed as a single entity, providing high-density port connectivity. This series also offers a comprehensive Layer 3 feature set, including dynamic routing protocols like OSPF and BGP, as well as VRF-Lite, making it optimized for deployments requiring scalable, high-performance Layer 3 routing in a stacked configuration.

Question 6

Which CLI command assigns an interface to a VRF on an Aruba CX switch?

Accepted Answer

A

Explanation: On an Aruba CX switch, assigning a Layer 3 interface to a Virtual Routing and Forwarding (VRF) instance is a two-step process in the CLI. First, you enter the configuration context of the specific interface (e.g., interface 1/1/1). Second, within that context, you use the vrf attach command to associate the interface with the desired VRF. Option A, interface 1/1/1 vrf attach vrf1, accurately represents this required command sequence and syntax.

Question 7

Which two Aruba CX switch series support modular power supplies for higher redundancy? (Select two) Exam Dumps 3/115

Accepted Answer

B, C

Explanation: The Aruba CX 6300 and Aruba CX 8400 switch series are designed for environments requiring high availability and resiliency. The Aruba CX 6300 series are stackable access switches that feature models with field-replaceable, hot-swappable power supplies, allowing for N+1 redundancy. The Aruba CX 8400 is a high-performance modular chassis switch designed for core and data center roles, which inherently includes multiple hot-swappable, load-sharing power supplies to ensure continuous operation and high levels of redundancy.

Question 8

Which CLI command displays the status of all DHCP relay configurations?

Accepted Answer

B

Explanation: The show dhcp-relay command is the correct command used in the ArubaOS-CX command-line interface (CLI) to display the comprehensive status of the DHCP relay agent. This command provides information about the global DHCP relay configuration, including whether the feature is enabled, the VLANs or interfaces on which it is active, and the configured helper IP addresses. It is the primary command for verifying the operational state and configuration of the DHCP relay service across the entire device. The question uses a space (dhcp relay) which is functionally equivalent to the hyphenated form (dhcp-relay) found in the documentation.

Question 9

Which Aruba CX feature ensures non-disruptive software updates with minimal downtime? Exam Dumps 13/115

Accepted Answer

B

Explanation: Live Upgrade is a specific feature in ArubaOS-CX designed to update the switch software with minimal service disruption. On systems with redundant management modules or in a Virtual Switching Framework (VSF) stack, Live Upgrade updates the standby member first. Once the standby is updated and ready, a graceful failover is initiated, making the newly updated member active. This process ensures the data plane continues to forward traffic throughout the upgrade, significantly reducing downtime compared to a standard reboot.

Question 10

Which CLI command removes a dynamically learned MAC address from the MAC table? Exam Dumps 51/115

Accepted Answer

A

Explanation: The command clear mac-address-table dynamic is used in ArubaOS-CX to remove all dynamically learned MAC address entries from the forwarding database (MAC table). This action forces the switch to relearn the MAC addresses of connected devices as they transmit frames. This is a standard administrative procedure for troubleshooting Layer 2 connectivity issues or clearing stale entries after network topology changes. The dynamic keyword specifically targets entries learned through traffic observation, leaving any statically configured MAC addresses untouched.

Question 11

Which Aruba CX feature ensures secure, zero-touch onboarding of new devices?

Accepted Answer

B

Explanation: Zero Touch Provisioning (ZTP) is an Aruba CX feature designed to automate the initial deployment of switches without manual intervention. When a new switch with a factory-default configuration is powered on and connected to the network, ZTP enables it to automatically locate a provisioning server (like Aruba Central or an on-premises server). The switch then securely downloads its designated configuration file and firmware image. This process ensures a secure, consistent, and rapid onboarding of new network devices, significantly reducing deployment time and potential for human error.

Question 12

Which Aruba CX feature enables role-based access control for switch management in Aruba Central?

Accepted Answer

A

Explanation: TACACS+ (Terminal Access Controller Access-Control System Plus) is a protocol that provides centralized Authentication, Authorization, and Accounting (AAA) services for network device administration. When integrated with Aruba CX switches, either directly or through Aruba Central, it enables role-based access control (RBAC). This allows administrators to define specific roles and privilege levels for different users or groups, controlling who can access the switch management interface (CLI, Web UI) and what commands they are authorized to execute. This granular control is fundamental to secure network management.

Question 13

Which Aruba CX switch series is designed for compact form-factor core switching?

Accepted Answer

B

Explanation: The Aruba CX 8325 Switch Series is specifically designed as a high-performance campus core and aggregation switch in a compact 1U form factor. It provides line-rate 1/10/25/40/100GbE connectivity, making it ideal for deployments where space is a consideration but high-performance core switching capabilities are required. Its architecture, featuring the Aruba Network Analytics Engine (NAE) and support for Virtual Switching Extension (VSX), solidifies its role as a modern, compact core switch.

Question 14

Which command ensures an Aruba CX switch is successfully registered in Aruba Central?

Accepted Answer

B

Explanation: The show aruba-central command is the specific utility on an ArubaOS-CX switch used to verify its management and registration status with the Aruba Central cloud platform. The output of this command provides critical details, including whether the Central management feature is enabled, the current connection status (e.g., Connected, Disconnected), the mode of connection, and the timestamp of the last successful connection. This makes it the definitive command for ensuring a switch is successfully registered and communicating with Aruba Central.

Question 15

Which two Aruba CX switch series are best suited for large-scale data center networks? (Select two)

Accepted Answer

B, C

Explanation: The Aruba CX 8400 and CX 9300 series are specifically engineered for the high-performance, scalability, and availability requirements of large-scale data center networks. The CX 8400 is a modular chassis switch ideal for data center core and aggregation roles, offering high port density and redundancy. The CX 9300 is a high-density, fixed-configuration switch designed for modern spine-and-leaf data center fabrics, providing line-rate 100/400GbE connectivity essential for large, cloud-native environments. Together, they represent Aruba's premier solutions for building robust, large-scale data center networks.

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