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[Hardware] NVIDIA Customized NCP-AIN Lab Simulation: NVIDIA-Certified Professional AI Netwo

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【Hardware】 NVIDIA Customized NCP-AIN Lab Simulation: NVIDIA-Certified Professional AI Netwo

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NVIDIA-Certified Professional AI Networking Sample Questions (Q26-Q31):NEW QUESTION # 26
You are troubleshooting a Spectrum-X network and need to ensure that the network remains operational in case of a link failure. Which feature of Spectrum-X ensures that the fabric continues to deliver high performance even if there is a link failure?
  • A. NVIDIA NetQ
  • B. RoCE Adaptive Routing
  • C. RoCE Congestion Control
  • D. RoCE Performance Isolation
Answer: B
Explanation:
RoCE Adaptive Routing is a key feature of NVIDIA Spectrum-X that ensures high performance and resiliency in the network, even in the event of a link failure. This technology dynamically reroutes traffic to the least congested and operational paths, effectively mitigating the impact of link failures. By continuously evaluating the network's egress queue loads and receiving status notifications from neighboring switches, Spectrum-X can adaptively select optimal paths for data transmission. This ensures that the network maintains high throughput and low latency, crucial for AI workloads, even when certain links are down.
Reference Extracts from NVIDIA Documentation:
* "Spectrum-X employs global adaptive routing to quickly reroute traffic during link failures, minimizing disruptions and preserving optimal storage fabric utilization."
* "RoCE Adaptive Routing avoids congestion by dynamically routing large AI flows away from congestion points. This approach improves network resource utilization, leaf/spine efficiency, and performance."

NEW QUESTION # 27
You are using NVIDIA Air to simulate a Spectrum-X network for AI workloads. You want to ensure that your network configurations are optimal before deployment.
Which NVIDIA tool can be integrated with Air to validate network configurations in the digital twin environment?
  • A. NetQ
  • B. DOCA
  • C. Spectrum-X Manager
  • D. GPU Cloud
Answer: A
Explanation:
NVIDIA NetQ is a highly scalable network operations toolset that provides visibility, troubleshooting, and validation of networks in real-time. It delivers actionable insights and operational intelligence about the health of data center networks-from the container or host all the way to the switch and port-enabling a NetDevOps approach.
NetQ can be used as the functional test platform for the network CI/CD in conjunction with NVIDIA Air.
Customers benefit from testing the new configuration with NetQ in the NVIDIA Air environment ("digital twin") and fix errors before deploying to their production.

NEW QUESTION # 28
Your organization is planning to utilize Ethernet for an upcoming AI project. Spectrum-X is the selected platform for this deployment, and Adaptive Routing is a key feature.
What are the requirements included in the Spectrum-X RA for adaptive routing?
  • A. SN4700, BlueField-3 SuperNIC, DDR, RoCE traffic
  • B. SN5600, BlueField-3 SuperNIC, DDR, RoCE traffic
  • C. SN5600, BlueField-3 SuperNIC, DDR, TCP traffic
Answer: B
Explanation:
The NVIDIA Spectrum-X Reference Architecture (RA) 1.0.1 is designed for Ethernet AI cloud deployments and includes the SN5600 Spectrum-4 switches and BlueField-3 SuperNICs. This architecture supports adaptive routing and DOCA programmable congestion control (PCC) for lossless RoCE traffic, optimizing performance for AI workloads.
The SN5600 switch offers 64 ports of 800GbE in a dense 2U form factor, providing high throughput and low latency essential for AI applications.

NEW QUESTION # 29
You are troubleshooting InfiniBand connectivity issues in a cluster managed by the NVIDIA Network Operator. You need to verify the status of the InfiniBand interfaces. Which command should you use to check the state and link layer of InfiniBand interfaces on a node?
  • A. ibstat -d mlx5_X
  • B. ip link show dev ib0
  • C. rdma show devices
  • D. ifconfig ib0
Answer: A
Explanation:
To check the status and link layer of InfiniBand interfaces, the ibstat command is used. For example:
ibstat -d mlx5_0
This command provides detailed information about the InfiniBand device, including its state (e.g., Active), physical state (e.g., LinkUp), and link layer (e.g., InfiniBand).
Reference: NVIDIA DGX BasePOD Deployment Guide - Network Operator Section

NEW QUESTION # 30
How does Spectrum-X achieve network isolation for multiple tenants?
  • A. By assigning unique IP address ranges to each tenant.
  • B. By implementing physical network segmentation.
  • C. Using manual configuration of access control lists (ACLs).
  • D. By implementing a Layer 3 Virtual Network Identifier (L3VNI) per VRR
Answer: D
Explanation:
Spectrum-X achieves network isolation in multi-tenant environments by implementing Layer 3 Virtual Network Identifiers (L3VNIs) per Virtual Routing and Forwarding (VRF) instance. This approach allows each tenant to have a separate routing table and network segment, ensuring that traffic is isolated and secure between tenants.
Reference Extracts from NVIDIA Documentation:
* "Spectrum-X enhances multi-tenancy with performance isolation to ensure tenants' AI workloads perform optimally and consistently."

NEW QUESTION # 31
......
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