300-640 Exam Actual Questions | 300-640 Pass Exam

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Cisco 300-640 Exam Syllabus Topics:

SectionObjectives
Topic 1: Compute and Storage for AI Infrastructure- Storage systems
  • 1. Distributed storage concepts
    • 2. High-throughput storage for AI training data
      - Compute architecture
      • 1. HPC-style scaling considerations
        • 2. GPU-based compute nodes
          Topic 2: Security and Governance in AI Data Centers- Infrastructure security
          • 1. Network segmentation and policy enforcement
            • 2. Secure access to AI workloads
              Topic 3: Data Center AI Infrastructure Fundamentals- AI/ML workload requirements in data centers
              • 1. Compute, GPU, and acceleration concepts
                • 2. Data pipeline and workload characteristics
                  Topic 4: Data Center Networking for AI Workloads- Cisco Data Center networking technologies
                  • 1. Cisco ACI integration concepts
                    • 2. Cisco Nexus platform concepts
                      - High-performance fabric design
                      • 1. Leaf-spine architecture in AI environments
                        • 2. Low-latency switching and routing considerations
                          Topic 5: AI Infrastructure Deployment and Operations- Deployment models
                          • 1. On-premises AI clusters
                            • 2. Hybrid AI infrastructure integration
                              - Operations and lifecycle management
                              • 1. Performance tuning and optimization
                                • 2. Monitoring and observability

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                                  Cisco Implementing Cisco Data Center AI Infrastructure Sample Questions (Q78-Q83):

                                  NEW QUESTION # 78
                                  A customer uses Cisco AI Products within Intersight and observes packet drops for RoCEv2 traffic. Which System QoS policy configuration must be deployed to ensure that RoCEv2 traffic is classified as lossless?

                                  Answer: C

                                  Explanation:
                                  RoCEv2 traffic must be mapped to a lossless system class. Enabling the Platinum class and clearing Allow Packet Drops configures that class as lossless, preventing packet drops for RoCEv2 traffic and supporting reliable RDMA communication for AI workloads.


                                  NEW QUESTION # 79
                                  An engineer configures quality of service in the Cisco ACI fabric to connect VAST storage servers. Which combination of attributes must be selected?

                                  Answer: A

                                  Explanation:
                                  VAST storage integration in a Cisco ACI fabric requires QoS settings that support lossless, congestion-aware Ethernet behavior. Weighted Random Early Detection with congestion notification enabled allows the fabric to signal congestion early through ECN before buffer exhaustion occurs, helping maintain predictable performance for high-throughput storage traffic.


                                  NEW QUESTION # 80
                                  A data center is deploying an AI infrastructure for LLM training and model inference. This infrastructure requires high GPU density, low-latency interconnects, and the ability to scale compute resources. When considering the Cisco UCS C885A M8 Rack Server for the deployment, which design aspect is the most critical for achieving optimal performance and scalability in this environment?

                                  Answer: B

                                  Explanation:
                                  For UCS C885A M8 servers running LLM training and inference workloads, the surrounding Nexus fabric design is critical because GPU-dense systems depend on low-latency, high- bandwidth, lossless network connectivity for scale-out performance. Selecting and configuring the correct Nexus fabric minimizes communication delays between compute nodes and enables the AI infrastructure to scale efficiently.


                                  NEW QUESTION # 81
                                  Which set of statements describes Quantized Congestion Notification?

                                  Answer: B

                                  Explanation:
                                  Quantized Congestion Notification relies on Explicit Congestion Notification as the primary congestion signal so the sender can reduce its transmission rate before packet loss occurs.
                                  Priority Flow Control acts as a safety mechanism if congestion becomes severe, and the congestion notification packet is generated by the receiving host when it receives packets marked with congestion-experienced bits.


                                  NEW QUESTION # 82
                                  A data center facility experienced a power outage, and the UCS X-Series servers did not restart automatically when power is restored. The configuration must be updated to prioritize these servers to boot as soon as possible to resume their work. Which set of power policy configurations must be used to meet these requirements?

                                  Answer: A

                                  Explanation:
                                  The servers must be configured to power back on automatically after power is restored, so the restore behavior should be set to always power on. Setting the power priority to high ensures these UCS X-Series servers receive priority during power recovery, allowing them to resume workloads as quickly as possible.


                                  NEW QUESTION # 83
                                  ......

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