100+ Free 300-640 DCAI Practice Questions
Pass your Implementing Cisco Data Center AI Infrastructure (DCAI 300-640) exam on the first try — instant access, no signup required.
Which Cisco AI pod architecture component is responsible for storage traffic isolation in a GPU cluster?
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Key Facts: 300-640 DCAI Exam
55-65
Exam Questions
Cisco
90 min
Exam Duration
Cisco
$300
Exam Fee
Pearson VUE
3 years
Certification Validity
Cisco
30%
Largest Domain (tie)
Architecture + Deployment
Feb 2026
Exam Available Since
Cisco Live Amsterdam
The 300-640 DCAI exam has 55-65 questions in 90 minutes with a scaled passing score. Key domains: AI Infrastructure Components & Architecture (30%), AI Infrastructure Deployment & Data Management (30%), AI Fundamentals (20%), and Operations & Troubleshooting (20%). Exam fee is $300. Valid 3 years. Available at Pearson VUE test centers and online proctored.
Sample 300-640 DCAI Practice Questions
Try these sample questions to test your 300-640 DCAI exam readiness. Each question includes a detailed explanation. Start the interactive quiz above for the full 100+ question experience with AI tutoring.
1Which transport protocol is required for RoCEv2 to operate correctly over a lossless Ethernet fabric?
2In a BGP-EVPN VXLAN fabric, which BGP address family is used to carry MAC/IP advertisement routes?
3What is the primary function of the Nexus 9000 series leaf switch in an AI pod Clos fabric?
4Which congestion control mechanism is commonly deployed in RoCEv2 AI fabrics to prevent buffer overflow without relying solely on PFC?
5In an AI GPU cluster, which network tier is responsible for the high-bandwidth collective communication between GPUs?
6What Nexus 9000 feature allows a single physical port to be divided into multiple logical subinterfaces for VXLAN routing?
7Which InfiniBand feature provides hardware-level multicast for GPU all-reduce operations?
8What is the recommended MTU size for a RoCEv2 lossless Ethernet AI fabric to accommodate RDMA frames?
9In a BGP-EVPN spine-leaf fabric, which EVPN route type is used to signal IP prefix reachability for inter-subnet routing?
10Which Cisco AI pod architecture component is responsible for storage traffic isolation in a GPU cluster?
About the 300-640 DCAI Exam
The 300-640 DCAI exam validates advanced skills in designing, implementing, and troubleshooting Cisco data center AI infrastructure. It became available for testing in February 2026. The exam covers AI/ML workload fundamentals, GPU cluster networking (RoCE/RoCEv2), Cisco AI Pod architecture, UCS compute configuration, high-performance fabric design with congestion control, Nexus Dashboard orchestration, and operational monitoring. It serves as a concentration exam toward the CCNP Data Center certification.
Questions
60 scored questions
Time Limit
90 minutes
Passing Score
~750-850/1000 (scaled)
Exam Fee
$300 (Pearson VUE)
300-640 DCAI Exam Content Outline
AI Fundamentals and Applications
AI/ML workload types (RAG pipelines, model training, inference serving, generative AI), the AI project lifecycle, infrastructure deployment models (public cloud, hybrid, on-premises, edge), and Cisco AI portfolio components including AI PODs, AI Canvas, and Hyperfabric
AI Infrastructure Components and Architecture
Evaluate network topology options for AI clusters, assess GPU compute deployment requirements, determine storage architecture for AI workloads (NVMe-oF, high-throughput object storage), address power density and sustainability, and design hybrid cloud integration points
AI Infrastructure Deployment and Data Management
Configure lossless Ethernet fabrics using Priority Flow Control (PFC), Explicit Congestion Notification (ECN), and Enhanced Transmission Selection (ETS); deploy RoCE and RoCEv2 for GPU-to-GPU RDMA; configure Cisco UCS for AI compute; deploy fabric automation with Nexus Dashboard, APIC, Hyperfabric, and Intersight
AI Infrastructure Operations and Troubleshooting
Benchmark AI workload performance, monitor infrastructure health using Cisco management tools, track GPU utilization and fabric telemetry, and troubleshoot congestion and connectivity issues in AI clusters
How to Pass the 300-640 DCAI Exam
What You Need to Know
- Passing score: ~750-850/1000 (scaled)
- Exam length: 60 questions
- Time limit: 90 minutes
- Exam fee: $300
Keys to Passing
- Complete 500+ practice questions
- Score 80%+ consistently before scheduling
- Focus on highest-weighted sections
- Use our AI tutor for tough concepts
300-640 DCAI Study Tips from Top Performers
Frequently Asked Questions
What is the Cisco 300-640 DCAI exam?
The 300-640 DCAI (Implementing Cisco Data Center AI Infrastructure) is a 90-minute concentration exam for CCNP Data Center certification. It validates expertise in deploying and managing Cisco AI infrastructure including GPU clusters, RoCE networking, UCS compute, and AI Pod architecture. The exam became available in February 2026.
How much does the 300-640 DCAI exam cost?
The 300-640 DCAI exam costs $300 USD. It is administered by Pearson VUE at test centers worldwide and through online proctored testing. Exam vouchers may be available through Cisco authorized learning partners.
What are the prerequisites for the 300-640 DCAI exam?
There are no hard prerequisites to sit the 300-640 DCAI exam. However, to earn the CCNP Data Center certification you must also pass the 350-601 DCCOR core exam. Cisco recommends 3-5 years of data center experience and completion of the DCAI authorized training course before attempting the exam.
What topics are covered on the 300-640 DCAI exam?
The 300-640 DCAI exam covers four domains: AI Infrastructure Components and Architecture (30%), AI Infrastructure Deployment and Data Management (30%), AI Fundamentals and Applications (20%), and AI Infrastructure Operations and Troubleshooting (20%). Key technologies include RoCE/RoCEv2, PFC, ECN, Cisco UCS, Nexus Dashboard, APIC, and Hyperfabric.
How long is the 300-640 DCAI certification valid?
The CCNP Data Center certification (which includes the 300-640 DCAI concentration) is valid for 3 years. You can renew by passing any CCNP-level or higher exam, earning Continuing Education credits, or by retaking the core exam before expiration.
What is the passing score for the 300-640 DCAI exam?
Cisco uses a scaled scoring model and does not publish a fixed passing percentage. Based on available data, the passing score is approximately 750-850 out of 1000. Scores are reported immediately upon completion at Pearson VUE testing centers.