HP HP Certifications HPE2-W09 Questions & Answers

• Question 91:

  An ArubaOS-CX is \ssmq DCBX on Interface 1/1/1. You enter this command:

  show dcbx interface 1/1/1

  Is this where you can see whether the connected converged network adapter (CNA) has accepted the application priorities advertised with DCBX?

  Solution: in the Application Priority Map Local advertisement section

  A. Yes

  B. No

  Correct Answer: A

  The show dcbx interface command shows the current DCBx status and the configuration of PFC, ETS, and application priority applied on the interface and the status of the TLVs received from the peer1. The Application Priority Map section

  shows the protocol, port/type and priority for both local and remote advertisements. Therefore, this is where you can see whether the connected converged network adapter (CNA) has accepted the application priorities advertised with DCBX.

  Reference:

  https://www.arubanetworks.com/techdocs/AOS-CX/AOSCX-CLI- Bank/cli_8400/Content/Chp_DCBx/DCBx_cmds/sho-dcb-int.htm

• Question 92:

  Refer to the exhibits.

  

  

  Is this how the switch handles the traffic?

  Solution: A broadcast arrives with a VLAN 10 tag on 1/1/1 on Switch-1. Switch 1 drops the frame.

  A. Yes

  B. No

  Correct Answer: B

  Based on the exhibits, Switch-1 has a trunk port on 1/1/1 that allows VLANs 10 and 20. Switch-2 has an access port on 1/1/2 that belongs to VLAN 10. Switch-3 has an access port on 1/1/3 that belongs to VLAN 20. If a broadcast arrives with a VLAN 10 tag on 1/1/1 on Switch-1, Switch-1 does not drop the frame. Instead, Switch-1 forwards the frame to all ports that belong to VLAN 10, which includes the trunk port 1/1/2 and the access port 1/1/4. Switch-2 receives the frame on its access port 1/1/2 and forwards it to all ports in VLAN 10, which includes the access port 1/1/5. Switch-3 does not receive the frame because it is not in VLAN 10. Therefore, this is not how the switch handles the traffic, and the correct answer is no.

• Question 93:

  Is this a use case for deploying Ethernet Ring Protection Switching (ERPS)?

  Solution: extending Layer 2 communications between data centers that connect over Layer 3 MPLS links

  A. Yes

  B. No

  Correct Answer: B

  Extending Layer 2 communications between data centers that connect over Layer 3 MPLS links is not a use case for deploying Ethernet Ring Protection Switching (ERPS). ERPS is a feature that provides loop prevention and fast convergence for Layer 2 networks that use ring topologies. ERPS does not support extending Layer 2 communications over Layer 3 networks such as MPLS1.

• Question 94:

  Can you attach this type of ArubaOS-CX interface to a VRF?

  Solution: A physical interface using Layer 2 mode

  A. Yes

  B. No

  Correct Answer: B

  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 it1.

• Question 95:

  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 force the router to use both links, ensure that active gateway is enabled on LAG 100 on both Switch-1 and Switch-2.

  A. Yes

  B. No

  Correct Answer: B

  The exhibit shows a network topology where Switch-1 and Switch-2 are part of a Virtual Switching Extension (VSX) fabric, and the router runs OSPF on LAG 100, which is a Layer 3 LAG. The question asks how to control how core-to-access traffic is forwarded, which means how the router chooses between the two links to Switch-1 and Switch-2. To force the router to use both links, ensuring that active gateway is enabled on LAG 100 on both Switch-1 and Switch-2 is not the correct solution. Active gateway is a feature that allows both VSX members to act as the default gateway for downstream devices, using a common virtual MAC address. Active gateway does not affect how upstream devices, such as the router, forward traffic to the VSX members1. To force the router to use both links, the correct solution is to configure equal-cost multi-path (ECMP) in OSPF on the router. ECMP is a feature that allows a router to load balance traffic across multiple paths with the same cost. ECMP can be configured using the maximum-paths command and specifying how many equal-cost paths the router should use2. Therefore, this does not correctly explain how to control how core-to-access traffic is forwarded.

• Question 96:

  Is this something that NetEdit 2.0 does after it discovers a switch? Solution: It enables the switch REST API Interface, if disabled.

  A. Yes

  B. No

  Correct Answer: B

  It enables the switch REST API interface, if disabled is not 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. However, NetEdit 2.0 cannot discover or communicate with switches that have their REST API interface disabled because NetEdit

  2.0 relies on REST API calls to interact with switches1.

• Question 97:

  Is this how you should position switches in the ArubaOS-CX portfolio tor data center networks?

  Solution: Deploy Aruba CX 8400 switches as core switches for very large three-tier data center networks.

  A. Yes

  B. No

  Correct Answer: A

  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 networks1. It runs on various switch models that are designed for different roles and scenarios in the data center1. 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 networks1. The statement is true because it correctly describes how to position Aruba CX 8400 switches in the ArubaOS-CX portfolio for data center networks.

• Question 98:

  Refer to the exhibit.

  

  You want to enable devices in VRF B and VRF C to reach shared resources in VRF A. is this a valid strategy for meeting this goal? Solution: Place ad three VRF$ in the same OSPF process on Switch-1.

  A. Yes

  B. No

  Correct Answer: B

  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 ID1.

• Question 99:

  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.

  A. Yes

  B. No

  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 tunnels1.

• Question 100:

  A customer's servers use ISCSI, and they send data and storage traffic on the same pair of I OGbE links. Is this a best practice for supporting the ISCSI requirements?

  Solution: Set up dedicated switches to connect to iSCSl arrays. Connect top of rack (ToR) switches, which will support both data and storage traffic, to those dedicated switches.

  A. Yes

  B. No

  Correct Answer: A

  Setting up dedicated switches to connect to iSCSI arrays and connecting top of rack (ToR) switches, which will support both data and storage traffic, to those dedicated switches is a best practice for supporting the iSCSI requirements. This provides isolation and security for the iSCSI traffic and reduces the risk of congestion or latency on the storage network1.