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Cisco Implementing Cisco Data Center AI Infrastructure Sample Questions:

1. A Cisco Nexus switch experiences head-of-line blocking in an RDMA environment. Which mechanism is most effective in reducing this condition?

A) PortFast
B) Virtual output queuing
C) Weighted Random Early Detection
D) NAT overload

2. An administrator configures VXLAN EVPN in a Cisco AI data center fabric. The requirement is to provide Layer 2 adjacency across multiple leaf switches while maintaining scalable control-plane learning. Which protocol fulfills this function?

A) STP
B) HSRP
C) BGP EVPN
D) OSPF

3. An organization deploys Cisco Nexus switches supporting RoCEv2 traffic. Which QoS behavior is most critical to maintain reliable GPU communication?

A) Strict packet fragmentation
B) Low-latency lossless transport
C) Randomized path selection
D) Best-effort forwarding

4. A company is building a network fabric for an AI training cluster that will train large language models. The cluster includes 256 GPUs distributed across 32 servers. Security requirements mandate isolation between different training projects and allowing shared access to a central storage system. Which approach provides the required security isolation and maintains optimal performance for GPU-to-GPU communication?

A) Configure QoS-based traffic steering with separate DSCP markings per project and policy-based routing to shared storage.
B) Deploy separate physical networks for each project with dedicated switches and cross-connects to shared storage.
C) Implement port-based VLANs for each project with router ACLs controlling storage access at the distribution layer.
D) Use VXLAN with separate VNIs per project and Group Policy Option to control granular access to shared storage.

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

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

Solutions: