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  1. Home
  2. HP Certification
  3. HPE2-W09 Exam
  4. HP.HPE2-W09.v2024-09-18.q108 Dumps
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Question 51

Is this a way that Virtual Switching Extension (VSX) differs from Virtual Switching Framework (VSF)?
Solution: VSX is recommended for the access layer of data centers and campuses while VSF is recommended for the core.

Correct Answer: B
VSX is not recommended for the access layer of data centers and campuses while VSF is recommended for the core. VSX and VSF are both high availability solutions that provide redundancy and load balancing across a pair of switches. However, VSX is recommended for the core and aggregation layers of data centers and campuses, while VSF is recommended for the access layer of campuses. The statement is false because it reverses the recommended roles of VSX and VSF.
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Question 52

Is this a use case for implementing Enhanced Transmission Selection (ETS) on an ArubaOS-CX switch?
Solution: to help the switch to look inside tunneled traffic and apply different quality of service (QoS) settings to different types of traffic

Correct Answer: B
To help the switch to look inside tunneled traffic and apply different quality of service (QoS) settings to different types of traffic is not a use case for implementing Enhanced Transmission Selection (ETS) on an ArubaOS-CX switch. ETS is a feature that provides bandwidth allocation and priority assignment for different traffic classes based on IEEE 802.1Qaz standard. ETS does not help the switch to look inside tunneled traffic, but rather relies on the priority values in the outer header of the tunneled traffic to apply QoS settings. A better way to help the switch to look inside tunneled traffic and apply different QoS settings to different types of traffic would be to use deep packet inspection (DPI) or application visibility and control (AVC) features.
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Question 53

AtubaOS-CX switches are acting as Virtual Extensible LAN (VXLAN) Tunnel Endpoints (VTEPs) WITHOUT Ethernet VPN (EVPN).
Does this correctly describe how the VTEPs handle VXLAN traffic forwarding?
Solution: VTEPs that use headend replication forward unicasts with unknown destination MAC addresses as unicast packets to each VTEP in the same VNl.

Correct Answer: A
VTEPs that use headend replication forward unicasts with unknown destination MAC addresses as unicast packets to each VTEP in the same VNI is a correct description of how the VTEPs handle VXLAN traffic forwarding. Headend replication is a method of replicating VXLAN packets at the ingress VTEP instead of using multicast routing. The ingress VTEP sends a copy of the VXLAN packet to each egress VTEP that belongs to the same VNI using unicast tunnels.
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Question 54

Refer to the exhibit.

Switch-1 and Switch-2 ate ArubaOS-CX switches that implement VXLAN WITHOUT Ethernet VPN (EVPN). Switch-2 uses the same VNI-to-VLAN mappings as Switch-1. Is this how the specified servers communicate?
Solution: Server 1 and Server 4 require routing services within the VXLANs to communicate with each other.

Correct Answer: B
The exhibit shows a network topology where Switch-1 and Switch-2 are ArubaOS-CX switches that implement VXLAN without Ethernet VPN (EVPN). Switch-2 uses the same VNI-to-VLAN mappings as Switch-1. The question asks how the specified servers communicate, which means Server 1 and Server 4. Server 1 and Server 4 are in different VLANs and different VNIs, which means they are in different layer 2 segments. To communicate with each other, they require routing services between the VXLANs. However, using Virtual Routing and Forwarding (VRF) to tunnel iSCSI traffic through the network spine on the same links that data traffic uses is not the correct way to provide routing services. VRF is a technology that creates multiple isolated Layer 3 domains on a physical network, each with its own routing table. VRF does not provide any benefits for iSCSI traffic, as it does not guarantee bandwidth, priority, or quality of service. VRF also adds overhead and complexity to the network configuration1. To provide routing services between the VXLANs, the correct way is to use VXLAN routing with EVPN or distributed anycast gateway (DAG). VXLAN routing with EVPN allows the switches to exchange MAC and IP information using BGP EVPN control plane, and to perform routing between different VNIs using a centralized or distributed model2. DAG allows the switches to act as anycast gateways for their local hosts, and to route traffic between different VNIs using a symmetric or asymmetric model3. Therefore, this does not correctly describe how the specified servers communicate.
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Question 55

Is this statement about ARP and ND Suppression true?
Solution: The switch replies to ARP requests with information present in the local ARP Table when ARP-Suppression is enabled.

Correct Answer: A
ARP and ND Suppression are features of ArubaOS-CX that reduce the broadcast traffic on EVPN VXLAN networks1. ARP and ND Suppression enable the switch to reply to ARP and ND requests with information present in the local ARP and neighbor cache, instead of flooding them to all VTEPs1. This reduces the bandwidth consumption and improves the network performance1. When ARP-Suppression is enabled, the switch replies to ARP requests with information present in the local ARP Table2. Therefore, this statement about ARP and ND Suppression is true, and the correct answer is yes. For more information on ARP and ND Suppression, refer to the Aruba Data Center Network Specialist (ADCNS) certification datasheet3 and the EVPN VXLAN Guide for your switch model1.
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