Online Access Free 300-640 Practice Test

What is a function of NVLink technology within a high-performance AI server or cluster?

• A.to enable remote access and virtualization of GPU resources for distributed AI development teams
• B.to establish a secure, encrypted channel for data transfer between the AI server and external storage
• C.to provide a high-speed, low-latency direct interconnect for GPU-to-GPU communication
• D.to manage power distribution and thermal regulation across all installed GPU units

A data center operator configures telemetry streaming on Cisco Nexus switches. What is the primary operational advantage over traditional SNMP polling?

• A.Increased packet fragmentation
• B.Elimination of routing tables
• C.Mandatory hardware replacement
• D.Real-time visibility with lower overhead

An engineer deploys an AI fabric on Cisco Nexus 9000 Series Switches connected to Cisco UCS nodes with NVIDIA GPUs. The requirements call for optimal network performance for training workloads. Adaptive routing is enabled on the NICs, and per-packet load balancing is enabled on the switches. Which other configuration must be implemented for this integration to be fully operational?

• A.Set the cisco_dlb=1 option in the NIC configuration so the NIC knows it can use adaptive routing.
• B.Include switch configuration "hardware profile spectrum-x" in global configuration mode.
• C.Include matching statements in your QoS policy so the switch knows which incoming packets to load balance.
• D.Add the "adaptive-routing" keyword under the switch load balancing configuration.

Drag and Drop Question
A network engineer is designing congestion management for an AI cluster using RoCEv2 transport. Based on Cisco best practices, the engineer must understand how ECN and PFC work together to provide lossless Ethernet transport. Drag and drop the congestion management mechanisms from the left onto the corresponding descriptions on the right. Not all options are used.

Correct Answer:

A Cisco AI cluster requires segmentation between multiple research teams sharing the same physical infrastructure. Which solution provides scalable tenant isolation?

• A.VLAN-only design
• B.Hub-and-spoke WAN
• C.Static NAT
• D.VXLAN overlays