HP HP Certifications HPE2-W09 Questions & Answers

• Question 61:

  You want to use NetEdit to configure an AtubaOS-CX switch.

  Is this a minimum requirement for setting up communications between the switch and NetEdit?

  Solution: Make sure that the SSH server is enabled.

  A. Yes

  B. No

  Correct Answer: A

  The solution is correct because making sure that the SSH server is enabled is a minimum requirement for setting up communications between the switch and NetEdit. NetEdit uses SSH to establish a secure connection to the switch and execute commands on it. Therefore, making sure that the SSH server is enabled is necessary for setting up communications between the switch and NetEdit.

• Question 62:

  Does this correctly describe how the Virtual Switching Extension (VSX) fabric reacts to various component failure scenarios?

  Solution: The ISL goes down, and after a few seconds, the keepalive link goes down too. Switch-1 and Switch-2 remains up.

  The Split-recovery mode is enabled. In this case the secondary switch first shutdowns and then enables SVis.

  A. Yes

  B. No

  Correct Answer: B

  The Virtual Switching Extension (VSX) fabric is a high availability solution that provides industry-leading performance and simplicity for campus and data center networks1. When the ISL goes down, and after a few seconds, the keepalive link goes down too, the VSX fabric reacts differently depending on the split-recovery mode setting. If the split-recovery mode is enabled, the secondary switch shuts down all its SVIs and waits for the ISL to come back up2. If the split-recovery mode is disabled, both switches keep their SVIs up and continue to forward traffic2. Therefore, this does not correctly describe how the VSX fabric reacts to various component failure scenarios. Reference:https://www.arubanetworks.com/assets/tg/TB_VSX.pdf

• Question 63:

  Refer to the exhibits.

  

  Is this how the switch handles the traffic?

  Solution: A broadcast arrives in VLAN 10 on Switch-1. Switch 1 forwards the frame on all interfaces assigned to VLAN10, except the incoming interface. It encapsulates the broadcast with VXIAN and sends it to 192.168.1.2. but not

  192.168.1.3.

  A. Yes

  B. No

  Correct Answer: B

  A broadcast arrives in VLAN 10 on Switch-1. Switch 1 forwards the frame on all interfaces assigned to VLAN10, except the incoming interface. It encapsulates the broadcast with VXLAN and sends it to 192.168.1.2, but not 192.168.1.3 is not a correct explanation of how the switch handles the traffic. Switch-1, Switch-2, and Switch-3 are ArubaOS-CX switches that use VXLAN and EVPN to provide Layer 2 extension over Layer 3 networks. VXLAN is a feature that uses UDP encapsulation to tunnel Layer 2 frames over Layer 3 networks using VNIs. EVPN is a feature that uses BGP to advertise multicast information for VXLAN networks using IMET routes. Switch-1 receives a broadcast in VLAN 10, which belongs to VNI 5010. Switch-1 forwards the frame on all interfaces assigned to VLAN 10, except the incoming interface, as per normal Layer 2 switching behavior. However, Switch-1 does not encapsulate the broadcast with VXLAN and send it only to 192.168.1.2, which is Switch-3's loopback interface, but rather replicates the broadcast, encapsulates each broadcast with VXLAN, and sends the VXLAN traffic to both 192.168.1.2 and 192.168.1.3, which are Switch-3's and Switch-2's loopback interfaces respectively1.

• Question 64:

  Refer to the exhibit.

  

  You are adding a VLAN 30, subnet 10.0.30.0/24 to the network shown in the exhibit. (This network is simplified to just the relevant switches for this item.) This subnet belongs in VRF A, and you have added a Layer 3 VLAN 30 interface

  attached to this VRF on Switch-1. You want to make the services in this VLAN available to devices in 10.1.20.0/24 in VRF B.

  Is this part of a valid setup for meeting these requirements?

  Solution: Add a route with this command: ip route 10.1.20.0/24 vlan20 vrf A

  A. Yes

  B. No

  Correct Answer: B

  Adding a route with this command: ip route 10.1.20.0/24 vlan20 vrf A is not part of a valid setup for meeting these requirements. This command would add a static route for 10.1.20.0/24 in VRF A, but it would not be able to reach VLAN 20 on Switch-2 because Switch-2 does not have a VLAN interface for VLAN 20 in VRF A. To make the services in VLAN 30 available to devices in 10.1.20.0/24 in VRF B, you need to use inter- VRF routing or route leaking between VRF A and VRF B on Switch-11.

• Question 65:

  Refer to the exhibit.

  

  Switch-1, Switch-2, and the router run OSPF on LAG 100, which is a Layer 3 LAG. Does this correctly explain how to control how core-to-access traffic Is forwarded? Solution: To reduce the amount of traffic sent over the ISL between Switch-1 and Switch-2. enable Equal Cost Multi Path (ECMP) on both Switch-1 and Switch-2.

  A. Yes

  B. No

  Correct Answer: B

  To reduce the amount of traffic sent over the ISL between Switch-1 and Switch-2, enable Equal Cost Multi Path (ECMP) on both Switch-1 and Switch-2 is not a correct explanation of how to control how core-to-access traffic is forwarded. Switch-1, Switch-2, and the router run OSPF on LAG 100, which is a Layer 3 LAG. ECMP is a feature that allows a router to load balance traffic destined to some network that is reachable through multiple equal cost route nexthops. Enabling ECMP on Switch-1 and Switch-2 would not reduce the amount of traffic sent over the ISL, but rather increase it by sending traffic over both links instead of one. A better way to reduce the amount of traffic sent over the ISL would be to enable active forwarding on LAG 100 on both Switch-1 and Switch-2, which would make one link active and one link standby for each direction of traffic 1.

• Question 66:

  Does this correctly describe the ArubaOS-CX architecture?

  Solution: The Aruba0S-CX Network Analytics Engine (NAE) helps admins to manage multiple Aruba0S-CX switches together using familiar CLI commands.

  A. Yes

  B. No

  Correct Answer: B

  ArubaOS-CX is a modern operating system for Aruba switches that provides automation, programmability, and analytics capabilities. The ArubaOS-CX Network Analytics Engine (NAE) is a built-in analytics framework for network assurance and remediation, that allows monitoring, troubleshooting, and proactive network management using scripts and agents1. The NAE does not help admins to manage multiple ArubaOS- CX switches together using familiar CLI commands. That is the function of the ArubaOS- CX Fabric Composer (AFC), which is a software-defined orchestration tool that simplifies data center fabric management. Therefore, this does not correctly describe the ArubaOS- CX architecture.

• Question 67:

  Switch-1 and Switch-2 are AruDaOS-CX switches, which are part of a Virtual Switching Extension (VSX) fabric. Switch-2 is the primary member. Switch-2 experiences a power failure while Switch-1 remains up. Switch-2's power recovers, and Switch-2 reboots.

  Is this one of the things that happens when Switch-2 finishes booting?

  Solution: Switch-1 downloads its MAC forwarding table from Switch-2.

  A. Yes

  B. No

  Correct Answer: B

  Switch-1 does not download its MAC forwarding table from Switch-2 when Switch-2 finishes booting. Switch-1 and Switch-2 are part of a VSX fabric, which is a high availability solution that provides redundancy and load balancing across a pair of switches1 . When Switch-2 experiences a power failure, Switch-1 takes over the role of the primary member and continues to forward traffic1. When Switch-2 recovers, it synchronizes its configuration and state information from Switch1, not the other way around1. The MAC forwarding table is part of the state information that is synchronized from the primary to the secondary member1.

• Question 68:

  Is this something that NetEdit 2.0 does after it discovers a switch?

  Solution: It collects Information about the switch hardware.

  A. Yes

  B. No

  Correct Answer: A

  It collects information about the switch hardware is something that NetEdit 2.0 does after it discovers a switch. NetEdit 2.0 is a tool that provides configuration management and validation for ArubaOS-CX and ArubaOS-Switch devices. NetEdit 2.0 can discover switches using various methods such as IP range scan, LLDP scan, CSV import, etc. After NetEdit 2.0 discovers a switch, it collects information about the switch hardware such as model number, serial number, MAC address, firmware version, etc1.

• Question 69:

  Is this statement about ARP and ND Suppression true?

  Solution: ARP-Suppression and ND-Suppression must be enabled together.

  A. Yes

  B. No

  Correct Answer: B

  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. ARP-Suppression and ND-Suppression can be enabled or disabled independently1. They do not have to be enabled together1. Therefore, this statement about ARP and ND Suppression is false, and the correct answer is no. 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 70:

  You are configuring Ethernet Ring Protection Switching (ERPS) on an ArubaOS-CX switch.

  Is this a guideline for configuring timers?

  Solution: The guard interval is set in units of 10 ms and should exceed the maximum expected delay for forwarding a frame around the complete ring.

  A. Yes

  B. No

  Correct Answer: A

  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 has two timers that control the protection switching mechanism: guard timer and hold off timer1. The guard timer prevents false switching caused by delayed or lost RAPS PDUs1. The guard interval is set in units of 10 ms and should exceed the maximum expected delay for forwarding a frame around the complete ring1. This ensures that all switches on the ring receive the RAPS PDUs before the guard timer expires1. Therefore, this is a guideline for configuring timers for ERPS, and the correct answer is yes. For more information on ERPS and timers, refer to the Aruba Data Center Network Specialist (ADCNS) certification datasheet2 and the ERPS Guide for your switch model1.