Cisco Implementing Cisco Data Center AI Infrastructure : 300-640

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Cisco 300-640 Exam Syllabus Topics:

Cisco Implementing Cisco Data Center AI Infrastructure Sample Questions:

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

2. Which result is provided through image recognition using AI?

A) routing of multicast messages across network boundaries
B) detection and labeling of visual elements from digital sources
C) scheduling of management tasks during maintenance periods
D) anonymization of audit trails for compliance objectives

3. A network architect wants to provide high availability for AI compute nodes connected to dual Cisco Nexus switches. Which technology enables active-active uplink forwarding without STP blocking?

A) PVST+
B) GLBP
C) vPC
D) VRRP

4. 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.

5. 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

Solutions: