2026 Actual Cisco 300-640 Dumps, Updated Exam Questions for Guaranteed Pass

300-640 free sample questions and answers

Cisco 300-640 practice quiz with correct answers for search indexing.

1. Question 1

   An organization deploys a new AI training fabric that uses RoCEv2 for GPU communication. The network architect designs the QoS configuration to ensure reliable RDMA transport and must meet these requirements: Support 256 GPU servers with RDMA connectivity.

   Prevent any packet loss that causes RDMA connection failures.

   Maintain consistent low-latency communication with a target of less than 10 microseconds.

   Use industry-standard protocols and configurations.

   Which configuration ensures that RoCEv2 operates as a lossless transport?

   AImplement traffic shaping to smooth RDMA traffic bursts and prevent congestion.
   

   BEnable Priority Flow Control on the traffic class carrying RoCEv2 packets.
   

   CSet the RDMA traffic to use the highest DSCP value to ensure priority forwarding.
   

   DConfigure weighted fair queuing to prioritize RDMA traffic over other traffic classes.
   

   Correct answer: B

   
   

2. Question 2

   A medical company has existing third-party AI servers and NVMe storage, but they want to purchase Cisco network switches with a cloud managed feature for simplicity.

   Which solution best meets the requirements?

   ABring Your Own AI (BYO AI) HyperFabric with Cisco 6000 Series Switches and Essentials license
   

   BBring Your Own AI (BYO AI) HyperFabric with Cisco 6000 Series Switches and Premier license
   

   CNexus Dashboard with Nexus 9000 Series Switches and Cloud license
   

   DHyperFabric AI with Cisco 6000 Series Switches and Premier license
   

   Correct answer: B

   
   

3. Question 3

   What is a purpose of Cisco AI PODs?

   Ato enable AI lifecycle management through cloud-native software with hardware support limited to compute servers
   

   Bto offer a flexible AI infrastructure focused on inferencing workloads with optional training capabilities
   

   Cto deliver modular AI hardware components that can be integrated with third-party software platforms
   

   Dto provide a turnkey, full-stack infrastructure for AI training, fine-tuning, and inferencing
   

   Correct answer: D

   
   

4. Question 4

   Which type of Cisco Intersight profile, when deployed to fabric interconnects, includes the configuration settings for ports, VLANs, and VSANs?

   AUnified Edge profiles
   

   BUCS Chassis profiles
   

   CUCS Domain profiles
   

   DUCS Server profiles
   

   Correct answer: C

   A Fabric Interconnect Profile in Cisco Intersight is the profile type deployed to fabric interconnects that includes configuration settings for ports, VLANs (Virtual Local Area Networks), and VSANs (Virtual Storage Area Networks). This profile manages the network configuration at the fabric interconnect level, enabling proper network segmentation and data flow.

5. Question 5

   How does RAG enhance the capabilities of LLMs?

   Aby removing the data preparation and cleaning step
   

   Bby removing inherent biases from LLM outputs
   

   Cby providing access to proprietary data
   

   Dby retaining the LLM by altering its core parameters
   

   Correct answer: C