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Cisco 300-640 Exam Syllabus Topics:

Section	Objectives
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
Data Center AI Infrastructure Fundamentals	- AI/ML workload requirements in data centers 1. Data pipeline and workload characteristics 2. Compute, GPU, and acceleration concepts
Compute and Storage for AI Infrastructure	- Compute architecture 1. GPU-based compute nodes 2. HPC-style scaling considerations - Storage systems 1. High-throughput storage for AI training data 2. Distributed storage concepts
AI Infrastructure Deployment and Operations	- Operations and lifecycle management 1. Performance tuning and optimization 2. Monitoring and observability - Deployment models 1. Hybrid AI infrastructure integration 2. On-premises AI clusters
Security and Governance in AI Data Centers	- Infrastructure security 1. Network segmentation and policy enforcement 2. Secure access to AI workloads

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Cisco Implementing Cisco Data Center AI Infrastructure Sample Questions (Q66-Q71):

NEW QUESTION # 66
An engineer deploys an AI fabric on Cisco Nexus 9000 Series Switches connected to Cisco UCS nodes with NVIDIA GPUs. The requirements call for optimal network performance for training workloads. Adaptive routing is enabled on the NICs, and per-packet load balancing is enabled on the switches. Which other configuration must be implemented for this integration to be fully operational?

A. Include switch configuration "hardware profile spectrum-x" in global configuration mode.
B. Include matching statements in your QoS policy so the switch knows which incoming packets to load balance.
C. Add the "adaptive-routing" keyword under the switch load balancing configuration.
D. Set the cisco_dlb=1 option in the NIC configuration so the NIC knows it can use adaptive routing.

Answer: D

Explanation:
The NIC must be explicitly configured with the Cisco dynamic load-balancing setting so it recognizes that the connected Cisco Nexus fabric supports adaptive routing. This completes the integration between NIC-side adaptive routing and switch-side per-packet load balancing for optimized AI training traffic.

NEW QUESTION # 67
Drag and Drop Question
An organization is deploying an AI/ML infrastructure with multiple network fabrics, each serving a specific purpose. The network architect must match the network fabric type with its primary function. Drag and drop the network fabric types from the left onto the corresponding descriptions on the right.

Answer:

Explanation:

NEW QUESTION # 68
A Cisco AI infrastructure requires fast convergence after a spine switch failure. Which routing design principle best supports this objective?

A. Layer 2 loop dependency
B. Static route redistribution
C. Equal-cost multipath routing
D. Single-path forwarding

Answer: C

Explanation:
ECMP provides multiple active forwarding paths and enables rapid failover when a path becomes unavailable. AI environments benefit from resilient high-bandwidth forwarding. Static redistribution slows operational flexibility, while single-path forwarding and Layer 2 dependency reduce scalability and convergence efficiency.

NEW QUESTION # 69
How does RAG enhance the capabilities of LLMs?

A. by providing access to proprietary data
B. by retaining the LLM by altering its core parameters
C. by removing the data preparation and cleaning step
D. by removing inherent biases from LLM outputs

Answer: A

Explanation:
RAG enhances LLMs by retrieving relevant external or proprietary information at generation time and using that context to produce more accurate, current, and domain-specific responses without changing the model's core parameters.

NEW QUESTION # 70
What describes inference traffic patterns in AI deployments?

A. eliminates the need for data preparation
B. provides real-time decision making
C. optimizes data storage solutions for data lakes
D. simplifies complex neural network architectures

Answer: B

Explanation:
Inference traffic is associated with using a trained model to generate predictions or responses from new input data. In AI deployments, this commonly supports real-time or near-real-time decision making, such as classification, recommendations, detection, or automated responses.

NEW QUESTION # 71
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