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質問 # 66
Is this part of a valid strategy for load sharing traffic across the links in an Ethernet Ring Protection Switching IERPS) solution?
Solution: Implement Virtual Switching Extension (VSX) on pairs of ERPS switches at the same site.
- A. Yes
- B. No
正解：B
質問 # 67
Does this correctly describe how the Virtual Switching Extension (VSX) fabric reacts to various component failure scenarios?
Solution: The keepalive goes down, ISL link remains up. Switch-1 and Switch-2 remains up. The Split-recovery mode is disabled. In this case the secondary switch shutdowns Svls.
- A. Yes
- B. No
正解：B
質問 # 68
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: 1000protected VLANs: 51-135 Ring l,Instance2:
control VLAN: 1001 protected VLANs: 136-220 Ring 2, Instance 1: control VLAN: 1000 protected VLANs: 181 -200 Ring 2, Instance 2: control VLAN: 1003 protected VLANs: 201 -220
- A. Yes
- B. No
正解：B
質問 # 69
Is this a requirement for implementing Priority Flow Control (PFC) on an ArubaOS-CX switch interface?
Solution: configuring trust of Cos on the interface
- A. No
- B. Yes
正解：B
質問 # 70
The architect designs a spine and leaf network for a single data center that will use multiple leaf switches as Virtual Tunnel End Points (VTEP). The architect needs to select the type of Integrated Routing & Bridging (IRB) for the solution.
Is this statement about the IRB type true?
Solution: In the Asymmetric IRB egress VTEPs bridge the traffic to the destination networks.
- A. Yes
- B. No
正解：B
解説：
In the Asymmetric IRB egress VTEPs bridge the traffic to the destination networks is not a true statement about the IRB type for a spine and leaf network for a single data center that will use multiple leaf switches as Virtual Tunnel End Points (VTEP). Asymmetric IRB is a method of routing traffic between different VXLAN segments using a centralized gateway. In this method, ingress VTEPs route the traffic to the gateway VTEP using a Layer 3 VNI, and egress VTEPs route the traffic to the destination networks using a Layer 2 VNI1.
質問 # 71
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
正解：B
解説：
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.
質問 # 72
You enter this command on an ArubaOS-CX switch:
Switch# show erps status ring 1
Is this what the specified status means?
Solution: The status is Idle, which means that the ring is up and fully connected with the RPL port blocked.
- A. Yes
- B. No
正解：B
質問 # 73
Does this correctly describe routing information advertised by a VXLAN Tunnel Endpomt (VTEP) that uses EVPN?
Solution: IMET routes advertise the MAC addresses that the VTEP has learned locally in a VXLAN.
- A. No
- B. Yes
正解：B
質問 # 74
Is this part of a valid strategy for load sharing traffic across the links in an Ethernet Ring Protection Switching (ERPS) solution?
Solution: Create two ERPS instances for the ring and assign different VLANs and different ring protection links (RPL) to each instance.
- A. No
- B. Yes
正解：B
解説：
Creating two ERPS instances for the ring and assigning different VLANs and different RPLs to each instance is part of a valid strategy for load sharing traffic across the links in an ERPS solution1. ERPS is a protocol that provides protection and recovery for Ethernet traffic in a ring topology1. It uses a RPL to block one of the links in the ring and prevent loops1. By creating two ERPS instances with different RPLs, you can use both links in the ring for different VLANs and achieve load sharing1.
質問 # 75
Two ArubaOS-CX switches ate part of a Virtual Switching Extension (V5X) fabric. Is this a guideline for configuring the switches' link-up delay settings?
Solution: The link-up delay timer is only required when split-recovery is disabled.
- A. Yes
- B. No
正解：B
解説：
Virtual Switching Extension (VSX) is a high-availability technology that allows two ArubaOS-CX switches to operate as a single logical device. VSX link-up delay is a feature that delays bringing downstream VSX links up, following a VSX device reboot or an ISL flap. This prevents traffic blackholing or loops due to transient conditions. The link-up delay timer is not only required when split-recovery is disabled. Split-recovery is another feature that prevents traffic blackholing or loops when the ISL link fails and then recovers. Split-recovery works by disabling the secondary VSX member's downstream links until it synchronizes with the primary member. However, split-recovery does not cover all scenarios where traffic blackholing or loops can occur, such as when both VSX members reboot simultaneously or when the ISL flaps rapidly. Therefore, it is recommended to configure the link-up delay timer even when split-recovery is enabled1. Therefore, this is not a valid guideline for configuring the switches' link-up delay settings.
質問 # 76
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. No
- B. Yes
正解：B
質問 # 77
Is this a way that a data center technology can help meet requirements for multi-tenancy?
Solution: Virtual Extensible LAN (VXLAN) provides millions of IDs to scale for the needs of a multi-tenant environment
- A. No
- B. Yes
正解：B
解説：
Virtual Extensible LAN (VXLAN) provides millions of IDs to scale for the needs of a multi-tenant environment is a way that a data center technology can help meet requirements for multi-tenancy. Multi-tenancy is the ability to provide logical separation and isolation of network resources for different tenants or customers on a shared physical infrastructure. VXLAN is a feature that provides Layer 2 extension over Layer
質問 # 78
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
正解：B
質問 # 79
Is this a way that a data center technology can help meet requirements for multi-tenancy?
Solution: Virtual Extensible LAN (VXLAN) enables multiple isolated Layer 3 domains, each with its own routing table, to share a physical network.
- A. Yes
- B. No
正解：B
質問 # 80
Is this a guideline for establishing a Virtual Switching Extension (VSX) Inter-Switch Link (ISL) between two ArubaOS-CX switches?
Solution: Use the same speed on every link In the ISL.
- A. No
- B. Yes
正解：B
解説：
The solution is correct because using the same speed on every link in the ISL is a guideline for establishing a VSX ISL between two ArubaOS-CX switches. Using the same speed on every link in the ISL ensures consistent performance and avoids potential issues with link aggregation. Therefore, using the same speed on every link in the ISL is a good practice for establishing a VSX ISL.
質問 # 81
Does this correctly describe the ArubaOS-CX architecture?
Solution: The ArubaOS-CX time-series database helps to support network analytics and troubleshooting.
- A. No
- B. Yes
正解：B
解説：
The ArubaOS-CX time-series database helps to support network analytics and troubleshooting is a correct description of the ArubaOS-CX architecture. The time-series database (TSDB) is a component of the ArubaOS-CX software that stores information about the switch's configuration, status, and performance over time. The TSDB helps to support network analytics and troubleshooting by providing historical data and trend analysis for various metrics1.
質問 # 82
Is this a guideline for establishing a Virtual Switching Extension (VSX) Inter-Switch Link (ISL) between two ArubaOS-CX switches?
Solution: Reserve the ISL for control plane traffic only.
- A. Yes
- B. No
正解：B
解説：
Virtual Switching Extension (VSX) is a high-availability technology that allows two ArubaOS-CX switches to operate as a single logical device. VSX Inter-Switch Link (ISL) is a link between the two VSX switches that is used for both data plane and control plane traffic. It is not recommended to reserve the ISL for control plane traffic only, as this would limit the benefits of VSX and create suboptimal traffic forwarding1. Therefore, this is not a valid guideline for establishing a VSX ISL between two ArubaOS-CX switches.
質問 # 83
Is this a rule for configuring schedule profiles on an ArubaOS-CX switch?
Solution: With the exception of a single strict priority queue, all queues must use the same scheduling algorithm.
- A. No
- B. Yes
正解：B
質問 # 84
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