HP HP Certifications HPE2-W09 Questions & Answers

• Question 101:

  Is this how you should position switches in the ArubaOS-CX portfolio for data center networks? Solution: Deploy Aruba 83xx switches as data center leaf switches.

  A. Yes

  B. No

  Correct Answer: B

  Deploying Aruba 83xx switches as data center leaf switches is not how you should position switches in the ArubaOS-CX portfolio for data center networks. The Aruba 83xx switches are designed for data center spine or core roles, and they provide high performance, scalability, and resiliency. The Aruba 63xx switches are more suitable for data center leaf roles, and they provide high density, low latency, and advanced features such as VSX and EVPN2.

• Question 102:

  Is this part of the process for using NetEdit to update firmware on ArubaOS-CX switches?

  Solution: Upload firmware images to the NetEdit firmware repository.

  A. Yes

  B. No

  Correct Answer: A

  Uploading firmware images to the NetEdit firmware repository is part of the process for using NetEdit to update firmware on ArubaOS-CX switches1. NetEdit is a tool that allows you to manage and monitor multiple switches from a single interface1. It also provides a firmware repository where you can store firmware images for different switch models and versions1. You can use NetEdit to upload firmware images to the repository and then deploy them to the switches1.

• Question 103:

  Is this a use case for implementing Enhanced Transmission Selection (ETS) on an ArubaOS-CX switch? Solution: to enable the switch to assign the correct priority and bandwidth to traffic that it transmits to servers

  A. Yes

  B. No

  Correct Answer: A

  Enhanced Transmission Selection (ETS) is a network scheduling algorithm that allows the switch to assign different priority and bandwidth values to different traffic classes1. This can be useful for transmitting traffic to servers that have different requirements for latency, jitter, or throughput. For example, ETS can prioritize voice or video traffic over data traffic, or allocate more bandwidth to backup or replication traffic. ETS is configured using the Data Center Bridging Exchange (DCBx) protocol, which advertises the configuration to peer devices2. Therefore, implementing ETS on an ArubaOS-CX switch is a valid use case for enabling the switch to assign the correct priority and bandwidth to traffic that it transmits to servers.

• Question 104:

  Is this correct positioning of AtubaOS-CX switches in the data center?

  Solution: Aruba CX 8325 switches are an appropriate choice for leaf switches in a leaf-spine topology that uses Virtual Extensible LAN (VXLAN) with Ethernet VPN (EVPN).

  A. Yes

  B. No

  Correct Answer: A

  Aruba CX 8325 switches are an appropriate choice for leaf switches in a leaf- spine topology that uses Virtual Extensible LAN (VXLAN) with Ethernet VPN (EVPN) is a correct positioning of ArubaOS-CX switches in the data center. The Aruba CX 8325 switches are designed for data center spine or core roles, but they can also be used as leaf switches in a VXLAN with EVPN scenario. They support advanced features such as VSX, EVPN, and PFC that enable high performance, scalability, and resiliency for data center networks1.

• Question 105:

  You are using NetEdit to manage AruDaOS-CX switches. You want to deploy a standard config to the switches, but need the config to include a few device-specific settings such as hostname and IP address.

  Is this what you should do?

  Solution: omit the device-specific settings from the configuration plan and include them in command scripts instead.

  A. Yes

  B. No

  Correct Answer: B

  Omit the device-specific settings from the configuration plan and include them in command scripts instead is not what you should do if you want to use NetEdit to manage ArubaOS-CX switches and deploy a standard config to the switches, but need the config to include a few device-specific settings such as hostname and IP address. This approach would require you to create separate command scripts for each switch, which can be tedious and error-prone. A better approach would be to use an auto config plan that uses scripts to customize the configuration for each switch based on variables such as serial number, MAC address, or user-defined parameters1.

• Question 106:

  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.

  A. Yes

  B. No

  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.

• Question 107:

  You are configuring Ethernet Ring Protection Switching (ERPS) on an ArubaOS-CX switch. Is this a guideline for configuring timers?

  Solution: The wait to restore timer (WTR) Is set in units of minutes; you can set it to prevent frequent topology changes due to a link going up and down.

  A. Yes

  B. No

  Correct Answer: A

  The wait to restore timer (WTR) Is set in units of minutes; you can set it to prevent frequent topology changes due to a link going up and down is a guideline for configuring timers for Ethernet Ring Protection Switching (ERPS) on an ArubaOS-CX switch. The WTR timer is set in units of minutes, and it defines how long a node must wait before restoring traffic on a previously failed link that has recovered1.

• Question 108:

  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.

  A. Yes

  B. No

  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 switches1. However, VSX is recommended for the core and aggregation layers of data centers and campuses, while VSF is recommended for the access layer of campuses1. The statement is false because it reverses the recommended roles of VSX and VSF.

• Question 109:

  A data center has a three-tier topology with ArubaOS-CX switches at each layer, is this a use case for implementing Virtual Switching Extension (VSX) at the core? Solution: The customer wants to deploy a single control plane for the core fabric.

  A. Yes

  B. No

  Correct Answer: B

  The Virtual Switching Extension (VSX) is a high availability solution that provides industry-leading performance and simplicity for campus and data center networks

  1. VSX does not implement a single control plane for the core fabric, but rather a dual control plane that allows independent software upgrades and configuration changes on each switch2. VSX also provides active-active forwarding and load balancing across both switches, eliminating the need for Spanning Tree Protocol (STP) or other loop prevention mechanisms2. Therefore, this is not a use case for implementing VSX at the core. Reference: https://www.arubanetworks.com/

  assets/tg/TB_VSX.pdf

• Question 110:

  Refer to the exhibit.

  

  which shows the topology tot an Ethernet Ring Protection Switching (ERPS) solution.

  Is this a valid design for the control and protected VLANs on the VSX fabric 1 switches?

  Solution: Ring 1, Instance 1:

  control VLAN: 51 protected VLANs: 51-100 Ring 1, Instance 2:

  control VLAN: 51 protected VLANs: 101-150 Ring 2, Instance 1: control VLAN: 181 protected VLANs: 181-200 Ring 2, Instance 2: control VLAN: 181 protected VLANs: 201-220

  A. Yes

  B. No

  Correct Answer: B

  ERPS is a feature of ArubaOS-CX that prevents loops at layer 2 on ring networks1. ERPS uses a protocol called Ring Auto Protection Switching (RAPS) to detect link failures and perform fast traffic switchover1. ERPS supports multiple rings and multiple instances per ring1. Each instance has a control VLAN and one or more protected VLANs1 . The control VLAN carries the RAPS PDUs and must be unique per ring1. The protected VLANs are the user traffic VLANs that are protected by ERPS and must be unique per instance1. Based on the exhibit, the design for the control and protected VLANs on the VSX fabric 1 switches is not valid. The control VLAN 51 is used for both instances 1 and 2 on ring 1, which violates the rule that the control VLAN must be unique per ring1. The protected VLANs 51-100 and 101-150 are also overlapping with the control VLAN 51, which violates the rule that the protected VLANs must be unique per instance1. Therefore, this is not a valid design for the control and protected VLANs on the VSX fabric 1 switches, and the correct answer is no. For more information on ERPS and VLANs, refer to the Aruba Data Center Network Specialist (ADCNS) certification datasheet2 and the ERPS Guide for your switch model1.