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Cisco Implementing Cisco Data Center AI Infrastructure Sample Questions:

1. A customer deploys a UCS 885a server in a data center with two power grids. Three of the
3000W power supplies in the server connect to each grid. Due to an external event, one of the grids will be shut down for maintenance. How does the server respond to this event?

A) The server continues to operate at full performance using redundant power supplies, but the PSU status LED glows solid amber.
B) The server immediately shuts down and stops all operations.
C) The server initiates a graceful shut down of the operating system.
D) The server operates with reduced performance and caps power to GPUs at 60%.

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

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

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

5. An engineer is deploying a Cisco AI POD environment to support large-scale AI workloads. The solution must provide a software-defined storage platform with a Disaggregated Shared- Everything architecture, allow compute nodes to run on Cisco UCS C225 M8 servers managed through Cisco Intersight, and deliver exabyte-scale, all-flash performance with integrated high- speed RDMA and GPU Direct Storage capabilities. Which solution meets the requirements?

A) NetApp All-Flash FAS (AFF)
B) VAST Data Universal Storage
C) Pure Storage FlashBlade
D) Local NVMe SSDs within each GPU server

Solutions: