Free Dell EMC NCP-IB Exam Questions

Become Dell EMC Certified with updated NCP-IB exam questions and correct answers

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Total 240 Questions | Updated On: Jun 03, 2025

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Question 1

Which statement accurately describes the benefits and limitations of using RDMA over Converged Ethernet (RoCE) in a data center environment?

A : RoCE requires lossless Ethernet to avoid packet loss, which may complicate deployment.

B : RoCE operates effectively over any Ethernet network without configuration.

C : RoCE provides low-latency communication without requiring specialized hardware.

D : RoCE is suitable for all types of traffic, including those that require guaranteed delivery.

Answer: A

Question 2

A financial services company is using RDMA over InfiniBand to accelerate the processing of real-time market data between servers. The application employs zero-copy techniques to avoid unnecessary data copies during communication. However, after switching to this configuration, the company observes that CPU utilization is still relatively high during data transfers, and performance gains are less than expected. What could be the most likely reason for the suboptimal performance?

A : Zero-copy requires additional software-based data serialization, which increases CPU overhead

B : The InfiniBand adapters are not using DMA (Direct Memory Access) for data transfers

C : The application is not properly registering memory regions for RDMA operations.

D : The zero-copy mechanism only applies to small data transfers, not to larger ones

Answer: C

Question 3

In the InfiniBand protocol stack, each layer plays a specific role in ensuring efficient data transfer and communication. Which of the following best describes the function of the data link layer in the InfiniBand protocol stack?

A : Establishes and maintains logical connections between applications and processes

B : Handles the physical transmission of data by converting bits into electrical or optical signals

C : Provides reliable point-to-point and multicast services, as well as error detection and correction

D : Implements flow control, congestion management, and ensures in-order delivery of messages

Answer: C

Question 4

How does Partitioning in an InfiniBand network enhance security, and what is the correct method for configuring it to prevent unauthorized communication between devices?

A : Partitioning configures access control lists based on device MAC addresses, preventing unauthorized devices from joining the fabric.

B : Partitioning isolates traffic by assigning devices to specific Partition Keys (P_Keys), and only devices with matching P_Keys can communicate, providing strong segmentation.

C : Partitioning uses VLAN tags similar to Ethernet networks, ensuring that only devices within the same VLAN can communicate, thereby preventing unauthorized traffic.

D : Partitioning creates encrypted tunnels between InfiniBand devices, ensuring secure communication even if unauthorized devices attempt to intercept the traffic.

Answer: B

Question 5

You are responsible for the deployment of a large-scale data center using NVIDIA's InfiniBand for AI workloads. Your goal is to ensure both the scalability and reliability of the fabric as the data center grows over time. The initial deployment involves 100 nodes, but you plan to expand to 500 nodes within the next year. It's critical that performance scales with the growth, minimizing bottlenecks, and ensuring reliability without network downtime. Which best practice should you implement to ensure scalability and reliability in a production InfiniBand environment as your data center grows?

A : Implement a spine-leaf topology using adaptive routing and a lossless network design.

B : Deploy a multi-tier fat-tree topology with oversubscription to optimize cost and limit hardware.

C : Use a single large switch for all nodes to reduce latency and simplify network management.

D : Enable Flow Control on all ports and restrict packet sizes to prevent congestion.

Answer: A

Page: 1 / 48

Total 240 Questions | Updated On: Jun 03, 2025

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