Cisco CCNP Data Center 300-640

The Cisco Implementing Cisco Data Center AI Infrastructure exam has a reputation for breadth, and many candidates underestimate how much ground it covers. Getcertkey closes those gaps with 82 practice questions that reflect the style and difficulty you can expect in 2026.

Cisco 300-640 Exam Overview:

Certification Vendor:	Cisco
Exam Name:	Implementing Cisco Data Center AI Infrastructure
Exam Number:	300-640 DCAI
Related Certifications:	CCNP Data Center Cisco Certified Specialist - Data Center AI Infrastructure
Passing Score:	Variable (approx. 750-850 out of 1000)
Available Languages:	English
Real Exam Qty:	55-65
Exam Duration:	90 minutes
Certificate Validity Period:	3 years
Exam Format:	Multiple choice, Multiple select, Simulation, Drag and drop
Exam Price:	USD 300
Recommended Training:	Implementing Cisco Data Center AI Infrastructure (DCAI) Training Implementing and Operating Cisco Data Center Core Technologies (DCCOR)
Exam Registration:	Cisco Official Exam Registration
Sample Questions:
Exam Way:	Online proctored or onsite at Pearson VUE test centers
Pre Condition:	No formal prerequisites; recommended: knowledge of Cisco UCS, Nexus switching, and data center core technologies; 3–5 years of data center experience
Official Syllabus URL:	https://www.cisco.com/site/us/en/learn/training-certifications/exams/dcai.html

Cisco 300-640 Exam Syllabus Topics:

300-640 Exam FAQs for 2026 Candidates

Which certification does the 300-640 exam lead to?

The 300-640 exam is the official Cisco exam behind the Cisco Certified Specialist - Data Center AI Infrastructure, Cisco Certified Network Professional (CCNP) Data Center certification, validating the skills measured by the Cisco Implementing Cisco Data Center AI Infrastructure credential. It sits at the Professional level of the Cisco certification program. It also connects to CCNP Data Center, Cisco Certified Specialist - Data Center AI Infrastructure, so the knowledge you build here carries over to those tracks as well.

How many questions are on the 300-640 exam, and how much time do I get?

The 300-640 exam contains 55-65 questions to be completed within 90 minutes. Before exam day, divide the available time by the question count to work out a comfortable per-question pace, and mark any item that eats into it so you can return later instead of getting stuck. Timed sessions in the Getcertkey test engines make that pacing automatic — run at least two full-length mock exams under the clock so time pressure never becomes the reason you drop points.

What score do I need to pass the 300-640 exam, and what does it cost?

The passing score for the 300-640 exam is Variable (approx. 750-850 out of 1000), and the official registration fee is USD 300. Retakes are not discounted — every new attempt means paying the full fee again — so it pays to measure yourself before you book. Work through the 82 practice questions on Getcertkey, sit a timed practice test, and schedule your exam only when your scores are consistently comfortable. That simple habit is the cheapest exam strategy there is.

Are there any prerequisites for the 300-640 exam?

No formal prerequisites; recommended: knowledge of Cisco UCS, Nexus switching, and data center core technologies; 3–5 years of data center experience Requirements can change when Cisco revises its certification program, so confirm the current eligibility rules on the official exam page before you register.

How do I register for the 300-640 exam?

You can book the Cisco Implementing Cisco Data Center AI Infrastructure exam through the official registration channels below:

• Cisco Official Exam Registration

As for delivery, the exam is offered in the following format: Online proctored or onsite at Pearson VUE test centers. Choose the option that suits you best when you book your seat.

What official training is recommended for the 300-640 exam?

Cisco recommends the following training resources for the Cisco Implementing Cisco Data Center AI Infrastructure exam:

• Implementing Cisco Data Center AI Infrastructure (DCAI) Training
• Implementing and Operating Cisco Data Center Core Technologies (DCCOR)

Official courses build the foundation; the 82 practice questions from Getcertkey then show you how that knowledge is examined, so the two work best together.

Can I try the 300-640 practice questions before I buy?

Yes. Getcertkey provides a free 300-640 PDF demo so you can review the question style and answer quality before purchasing. Every purchase also includes 365 days of free updates — if Cisco revises the exam during that period, the updated material reaches you at no cost. Once the free-update year ends, you can extend your update service at a 50% discount.

What if I fail the 300-640 exam, and how is my order delivered?

Every Cisco Implementing Cisco Data Center AI Infrastructure purchase on Getcertkey is covered by a 100% money-back guarantee with clear conditions: if you take the corresponding exam within 60 days of your purchase and do not pass, you can claim a full refund by submitting a scanned copy of your exam enrollment slip and your official score report as a PDF within two days of the exam date; claims are processed within seven days of submission. The guarantee does not apply to exams taken within three days of purchase, to material that was downloaded but never used in an exam attempt, or to free products and expired orders, and the candidate name must match the payer name. If you would rather not take a refund, you can instead exchange your purchase for two free exam preparation products of equal value and keep the update service on your original product.

Delivery is instant: your download is sent to your email within one minute of payment, with no limit on how many computers you may install the material on. If nothing arrives within two hours, check your spam folder and contact customer service for help.

What topics are covered in the 300-640 exam?

The Cisco Implementing Cisco Data Center AI Infrastructure exam blueprint is organized into 4 domains. The first three are:

• AI Infrastructure Deployment and Data Management — 30% of the exam
• AI Infrastructure Components and Architecture — 30% of the exam
• AI Infrastructure Fundamentals — 20% of the exam

For the complete domain-by-domain breakdown, scroll up to the full exam topics outline above and use it to plan how you distribute your study time.

Cisco Implementing Cisco Data Center AI Infrastructure Sample Questions:

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

Question #2

A corporate network administrator manages a HyperFabric AI environment and wants to receive email notifications about assertions in the fabric. The administrator sets up a recipient email endpoint under the notification endpoints in the controller, but notifications are not received.
Which two configurations cause the issue? (Choose two.)

A. The fabric of interest and email endpoint are not configured in the default notification policy.
B. The email server configuration is not configured using the DNS name.
C. The recipient email address is not verified by the HyperFabric controller.
D. The DNS server IP is not defined in the controller.
E. The HyperFabric controller cannot reach the email server of the Acme Corporation.

Question #3

A network architect designs connectivity for a new Cisco AI POD operating in Intersight Managed Mode. To ensure high availability and aggregate bandwidth for external network traffic, a port channel must be established using multiple 100 GbE uplink ports on the fabric interconnects to connect to the upstream core switch infrastructure. Which specific policy, applied through the domain profile, must be modified to define and configure this port channel on the fabric interconnects for the desired uplink connectivity?

A. port policy
B. Ethernet network group
C. LAN connectivity policy
D. network connectivity policy

Question #4

A financial company plans to deploy an AI training and inference infrastructure to support its customers. The team must use a solution that provides 96 GPUs, aligns with NVIDIA-compliant reference architectures, and enables cloud-based management of the entire on-premises network environment. Which Cisco solution meets the requirements?

A. Cisco Nexus Dashboard deployed in AWS or Azure with Nexus 9000 switches and AI servers on premises
B. Cisco Intersight AI fabric with Nexus 9000 switches and AI servers on premises
C. Cisco HyperFabric AI Small AI Cluster with Cisco 6000 switches and AI servers on premises
D. Cisco HyperFabric AI Medium AI Cluster with Cisco 6000 switches and AI servers on premises

Question #5

Which network design approach should be used to build a high-performance, nonblocking AI/ML data center fabric that supports 64 fully equipped UCS C885A nodes and provides the lowest possible latency and lossless Ethernet?

A. rail optimized
B. flat Layer 2
C. leaf-spine
D. traditional three-tier

Solutions: