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Cisco 300-640 Exam Syllabus Topics:

Cisco Implementing Cisco Data Center AI Infrastructure Sample Questions:

1. A customer is deploying a new AI fabric with all new NVIDIA GPUs and must verify the performance between the nodes in the network. Which tool must be used to validate the customer benchmarks?

A) IXIA
B) iPerf
C) Spirent
D) NCCL

2. A Cisco Nexus switch is configured with QoS policies for AI traffic. Which scheduling mechanism guarantees bandwidth for critical traffic classes during congestion?

A) Weighted scheduling
B) MAC filtering
C) FIFO
D) Port mirroring

3. An organization deploys a new AI training fabric that uses RoCEv2 for GPU communication. The network architect designs the QoS configuration to ensure reliable RDMA transport and must meet these requirements:
- Support 256 GPU servers with RDMA connectivity.
- Prevent any packet loss that causes RDMA connection failures.
- Maintain consistent low-latency communication with a target of less
than 10 microseconds.
- Use industry-standard protocols and configurations.
Which configuration ensures that RoCEv2 operates as a lossless transport?

A) Enable Priority Flow Control on the traffic class carrying RoCEv2 packets.
B) Set the RDMA traffic to use the highest DSCP value to ensure priority forwarding.
C) Implement traffic shaping to smooth RDMA traffic bursts and prevent congestion.
D) Configure weighted fair queuing to prioritize RDMA traffic over other traffic classes.

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

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

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

Solutions: