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Cisco 300-640 Exam Syllabus Topics:

Cisco Implementing Cisco Data Center AI Infrastructure Sample Questions:

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

2. An engineer made changes to the corporate DNS, which caused a Cisco UCS X-Series domain to lose connectivity to Intersight. To restore connectivity, the management interface DNS and NTP settings must be updated using the device console UI. Which configuration change must be made in Intersight to allow the updated DNS configuration to persist?

A) Create a network connectivity policy and apply it to the blade chassis.
B) Create a device connector policy and apply it to the blade chassis.
C) Edit the domain profile deployed to the fabric interconnect.
D) Edit the IMC access policy associated to the fabric interconnects.

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

A) Unified Edge profiles
B) UCS Chassis profiles
C) UCS Server profiles
D) UCS Domain profiles

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

5. A bank is planning to deploy an AI inference solution at its branch locations. The solution must support workloads that require a balance of compute, memory, and potential GPU acceleration, and it must be suitable for installation by nontechnical onsite resources. The requirements are:
- high availability of the chassis management plane.
- support for up to 768 GB of memory for in-memory model storage and
processing
- remote server launch requiring no on-site IT staff
- use of Cisco Intersight for SaaS-based infrastructure lifecycle
management
Which solution meets the requirements?

A) Cisco UCS C845A M8 Server
B) Cisco Unified Edge
C) Cisco UCS C240 Servers
D) Cisco UCS X-Series Direct

Solutions: