4.3 Describe High-Performance Network Enabling Technologies for AI in Data Center Infrastructure 350-601 Practice Questions (Page 1)

Questions 1–5

1. 1expert · hard

   A cloud provider is designing a multi-tenant AI platform where each tenant runs distributed training jobs on a shared GPU cluster. The provider must isolate tenant traffic while maintaining the low latency and high throughput required for RDMA. The provider is considering two options: (1) VXLAN overlays with hardware offload, and (2) physical partitioning of the network into separate VLANs. Which option should they choose, and why?

   • AVLANs, because they support more tenants than VXLAN
   • BVXLAN with software encapsulation, because it is easier to manage
   • CVXLAN with hardware offload, because it provides scalable tenant isolation and preserves line-rate performance for RDMA
   • DVLANs, because they provide better performance than VXLAN
   Reveal Solution Discussion Select an answer first
2. 2application · medium

   An AI platform team is experiencing intermittent slowdowns in distributed training jobs. The network team suspects that congestion is occurring on specific paths, but they cannot identify which flows are affected because the traffic is highly dynamic. The team needs a monitoring solution that provides real-time, per-flow visibility into the network to pinpoint the congested paths. Which technology should they deploy?

   • AIn-band Network Telemetry (INT) on the AI traffic class
   • BsFlow with 1:1000 sampling on all switches
   • CNetFlow with 1:1 sampling on all switches
   • DSNMP polling of interface counters every 5 minutes
   Reveal Solution Discussion Select an answer first
4. 3foundation · easy

   How does ECN differ from traditional TCP congestion control (e.g., tail drop)?

   • AECN increases the TCP window size.
   • BECN uses a different routing protocol.
   • CECN encrypts the TCP header.
   • DECN marks packets instead of dropping them to signal congestion.
   Reveal Solution Discussion Select an answer first
5. 4foundation · easy

   How does network virtualization (e.g., VXLAN overlays) support multi-tenant AI environments?

   • AIt provides isolation between tenants while allowing them to share the same physical network.
   • BIt encrypts all traffic between tenants.
   • CIt eliminates the need for switches in the data center.
   • DIt increases the physical bandwidth available to each tenant.
   Reveal Solution Discussion Select an answer first
6. 5foundation · easy

   What is the primary advantage of a fat-tree topology over a traditional hierarchical network for AI training?

   • AIt uses fewer switches, reducing cost.
   • BIt simplifies network management by using a single routing protocol.
   • CIt provides a single path for all traffic, ensuring deterministic behavior.
   • DIt provides more bandwidth between switches at higher layers, reducing oversubscription.
   Reveal Solution Discussion Select an answer first