Cisco 300-640 : Implementing Cisco Data Center AI Infrastructure

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Cisco 300-640 Exam Syllabus Topics:

Cisco Implementing Cisco Data Center AI Infrastructure Sample Questions:

1. An engineer configures Cisco Nexus Dashboard Fabric Controller for AI infrastructure automation. The company wants centralized policy management and simplified fabric provisioning across multiple pods. Which capability provides this benefit?

A) Manual CLI consistency checks
B) Intent-based fabric automation
C) Local VLAN switching
D) Distributed ACL processing

2. 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) Randomized path selection
C) Low-latency lossless transport
D) Best-effort forwarding

3. A network engineer analyzes RoCEv2 traffic flows in an AI training cluster and notices that all RoCEv2 packets have the Don't Fragment bit set in the IP header. Why must RoCEv2 set the DF bit in all packets?

A) to ensure that packets always take the same path through ECMP routing for consistent latency
B) to enable Path MTU Discovery so that the optimal packet size can be negotiated
C) to indicate to intermediate switches that the packet contains RDMA traffic requiring special handling
D) to prevent IP fragmentation that would break the InfiniBand sequence numbering and ordering guarantees

4. An engineer must optimize the performance of an AI inference workload running on a Cisco UCS C-Series rack server. The workload experiences intermittent latency spikes, and Intersight system logs show frequent thermal event entries. Which troubleshooting action must be taken first to address the performance issues on the Cisco UCS server?

A) Review the resource utilization of the AI workload (CPU, memory, and GPU) to identify potential bottlenecks and optimize resource allocation.
B) Inspect the physical environment of the server, including ambient temperature and airflow, and replace any failed fans.
C) Check the power supply status and power consumption of the UCS server using UCS Manager to ensure that the server has sufficient power.
D) Examine the storage configuration, including the RAID configuration and disk health, to ensure that the storage subsystem is not causing latency issues.

5. An engineer must monitor congestion, flow latency, and traffic drops using Cisco Nexus Dashboard and chooses to use the Traffic Analytics feature. Which Nexus Dashboard feature is automatically disabled when Traffic Analytics is enabled?

A) Connectivity Analysis
B) Flow Telemetry
C) Delta Analysis
D) SNMP Traps

Solutions: