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: Jan 08, 2025

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Question 1

Which of the following describes a key advantage of InfiniBand's link-layer protocol in achieving high-performance interconnects?

A : InfiniBand prioritizes traffic using a weighted round-robin scheduling mechanism.

B : InfiniBand employs credit-based flow control to manage traffic without congestion.

C : InfiniBand uses virtual LANs (VLANs) to isolate traffic, improving bandwidth efficiency.

D : InfiniBand's link-layer operates at a fixed bandwidth, which simplifies network management.

Answer: B

Question 2

You are configuring an InfiniBand fabric to optimize high-throughput, low-latency communication for a large-scale HPC cluster. Which advanced InfiniBand feature allows you to ensure traffic prioritization and reduce congestion for critical workloads?

A : Multipathing (MPIO)

B : Adaptive Routing (AR)

C : Credit-Based Flow Control

D : Service Level (SL) to Virtual Lane (VL) Mapping

Answer: D

Question 3

Which statement best describes the primary function of an InfiniBand router in a high-performance computing (HPC) environment?

A : The InfiniBand router connects different InfiniBand subnets, allowing for communication between devices across multiple subnets.

B : The InfiniBand router aggregates traffic from multiple endpoints and directs it to external networks, such as Ethernet or Fibre Channel.

C : The InfiniBand router controls congestion within a subnet by distributing traffic across multiple links based on load.

D : The InfiniBand router functions as a load balancer, distributing data streams evenly across endpoints within the same subnet.

Answer: A

Question 4

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

Question 5

In AI/ML training clusters, how does Remote Direct Memory Access (RDMA) over InfiniBand accelerate the performance of distributed deep learning?

A : RDMA over InfiniBand enables deep learning models to share memory across GPUs, allowing for larger models to be trained without memory bottlenecks.

B : RDMA over InfiniBand simplifies the orchestration of distributed training jobs by automating workload balancing across GPUs and nodes.

C : RDMA over InfiniBand automatically compresses the data being transferred, which reduces the bandwidth required for communication between GPUs.

D : RDMA over InfiniBand allows direct data transfer between GPUs without passing through the host CPU, significantly reducing the overhead during parameter updates.

Answer: D

Page: 1 / 48

Total 240 Questions | Updated On: Jan 08, 2025

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