Cisco 300-640 Practice Exam Questions & Answers
7 Free Questions
· Last reviewed: October 12, 2026
· Prepared & Reviewed by the ValidExamDumps Editorial Team
Exam Facts
Cisco 300-640 Exam Details
Key details for this exam, checked against the published exam outline
67
Practice Questions (Our Bank)
90 minutes
Exam Duration
- Exam Code
- 300-640
- Full Name
- Implementing Cisco Data Center AI Infrastructure
- Issuing Body
- Cisco
- Question Format (Our Bank)
- Multiple Choice, Drag & Drop
Practice Questions
Free 300-640 Practice Questions
Each question shows the correct answer and an explanation of why it is right
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A network engineer logs into Nexus Dashboard and sees an anomaly showing that a BGP peer connection has gone down. Next to the anomaly, a yellow bubble displays ''Correlated.''
What does Nexus Dashboard indicate by ''Correlated'' in this case?
Correct Answer:
C
Explanation
When Nexus Dashboard displays a yellow 'Correlated' bubble next to a BGP peer connection anomaly, it indicates that one or more other anomalies or events are related to or affected by this BGP peer connection failure. The correlation feature shows that this BGP issue is not isolated; other network issues, performance degradation, or subsequent failures are causally linked to this peer connection down event. This helps network operators understand root cause relationships and prioritize remediation.
How does RAG enhance the capabilities of LLMs?
Correct Answer:
C
Explanation
Congestion notification packets must be classified to a high-priority queue using DSCP marking because they carry critical feedback from storage targets about network congestion. RoCEv2 relies on these CNP packets to trigger rate limiting at the source. If CNPs are dropped or delayed, sources will not receive congestion signals and will keep sending traffic, worsening the congestion. By assigning CNP packets their own DSCP value and mapping them to a high-priority queue, you ensure they always reach their destination reliably and quickly.
An Intersight administrator plans to deploy new server solutions to several small branch offices across the country. Each location needs at least one chassis. The servers must have redundant CPUs, memory, and 200 Gbps of unified fabric connectivity per compute node.
Which hybrid AI compute solution meets the requirements?
Correct Answer:
B
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?
Correct Answer:
A
Explanation
Image recognition using AI detects and labels visual elements from digital sources like photos or video frames. The technology identifies objects, people, text, and other visual components in images and assigns them meaningful labels or categories. This is different from other AI applications like natural language processing or predictive analytics. The detection and labeling capability is what makes image recognition useful for tasks such as security monitoring, medical imaging analysis, or content organization.
Which aspect of rapid provisioning supports a scalable workload execution in an AI infrastructure?
Correct Answer:
D
Explanation
Image recognition using AI detects and labels visual elements from digital sources like photos or video frames. The technology identifies objects, people, text, and other visual components in images and assigns them meaningful labels or categories. This is different from other AI applications like natural language processing or predictive analytics. The detection and labeling capability is what makes image recognition useful for tasks such as security monitoring, medical imaging analysis, or content organization.
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?
Correct Answer:
C
A data center administrator for a medium-sized manufacturing facility uses Intersight to perform unattended operating system installation on already discovered X-Series servers with server profiles assigned.
Which set of prerequisites must be met for installing an operating system on a server in Cisco Mode?
Correct Answer:
B
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Domain 1: AI Fundamentals and Applications
20%
Learn to describe AI and ML workload types including RAG, training, inference, and generative AI. Understand the AI lifecycle, use cases, infrastructure types from cloud to edge, and the network, compute, storage, orchestration and monitoring components that support AI environments.
Sample questions from this domain above:
Q4Q5
Domain 2: AI infrastructure Components and Architecture
30%
Evaluate network, compute and storage deployments against AI workload requirements for bandwidth, latency, GPU resources, memory and scalability. Assess power efficiency and sustainability needs, and design hybrid deployments with secure cloud integration and data synchronization.
Sample questions from this domain above:
Q1Q7
Domain 3: AI infrastructure Deployment and Data Management
30%
Configure high-performance networks using congestion control, RoCE and QoS to support AI workloads. Set up compute and storage with Cisco UCS domain profiles, power policies and connectivity policies, and deploy AI-ready fabrics using Nexus Dashboard, APIC and Intersight.
Sample questions from this domain above:
Q2Q6
Domain 4: AI infrastructure Operations and Troubleshooting
20%
Implement benchmarks to measure AI infrastructure performance. Monitor data center health using Nexus Dashboard and Intersight to track operational telemetry, system health and alerts, then troubleshoot issues using system messages and log correlation tools.
Sample question from this domain above:
Q3
FAQ
300-640 Exam FAQ
Common questions about the exam itself
What background do I need before attempting the 300-640 exam?
Cisco does not publish a formal prerequisite for this exam, though it assumes you have hands-on experience with Cisco data center infrastructure, UCS systems, and networking concepts. Most candidates hold a prior Cisco certification or work as a data center engineer or network administrator.
How does the 300-640 relate to other Cisco data center exams?
The 300-640 sits within the Cisco Certified Network Professional Data Center track and builds on foundational data center knowledge. It focuses specifically on AI infrastructure, whereas other exams in the track cover general data center architecture, virtualization or networking.
What is the hardest part of the 300-640 exam?
The AI Infrastructure Components and Architecture domain accounts for 30 percent of the exam and requires you to evaluate complex design scenarios across network, compute and storage. This domain combines technical depth with the need to make trade-offs between competing requirements like latency, redundancy and cost.
How long should I spend preparing for the 300-640?
Plan for 4 to 6 weeks of focused study if you already work with Cisco data center products. If you are new to Cisco UCS, Nexus Dashboard or ACI, allow 8 to 12 weeks to build practical familiarity alongside your exam prep.
What tools and products does the 300-640 exam test me on?
You need to know Cisco UCS for compute configuration, Nexus Dashboard and APIC for orchestration, Intersight for management and monitoring, and Cisco Nexus switches for high-performance networking. The exam also covers Cisco AI solutions like AI Pods and Hyperfabric.
Can I retake the 300-640 exam if I fail on my first attempt?
Cisco allows you to retake the exam, though you must wait a set period after a failed attempt before you can retest. Check with the delivery provider you use, as Pearson VUE and PSI may have different retake policies.
What does the 300-640 exam day actually involve?
You will have 90 minutes to answer 65 questions in a proctored environment, either online or at a test center. The exam uses multiple choice and scenario-based questions to test your ability to deploy and troubleshoot AI infrastructure.
How long does the 300-640 certification stay valid?
Cisco has not published an expiration date for this certification on their official exam page, so you should confirm the validity period directly with Cisco or your training provider before you sit the exam.
Which job roles should pursue the 300-640 certification?
This exam targets data center engineers, infrastructure architects and network engineers who design or manage AI workloads in enterprise environments. It is also relevant for systems engineers selling or supporting Cisco data center AI solutions.
Does the 300-640 require the Implementing Cisco ACI exam as a prerequisite?
No, the 300-640 does not list the ACI exam as a formal prerequisite, though understanding ACI concepts is helpful since Nexus Dashboard and APIC are tested. You can take the 300-640 as a standalone exam if you have sufficient hands-on data center experience.
