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: Sep 27, 2024

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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

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

Question 3

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 4

Which two of the following statements correctly describe InfiniBand’s subnet management and addressing standards as per the InfiniBand architecture? (Select two)

A : InfiniBand requires static IP addressing for managing device communication.

B : The InfiniBand Subnet Manager (SM) is responsible for configuring Local Identifiers (LIDs) and ensuring route calculation within a subnet.

C : InfiniBand devices use Ethernet MAC addresses to identify themselves within the InfiniBand fabric.

D : InfiniBand uses DNS services for name resolution within the network.

E : Global Identifiers (GIDs) are used in InfiniBand for routing between different subnets.

Answer: B,E

Question 5

Which of the following best describes how load balancing is achieved in an InfiniBand fabric using switches?

A : Load balancing is achieved by dynamically reassigning Local Identifiers (LIDs) to redistribute traffic across available ports.

B : Switches in an InfiniBand fabric use static routes for each connection, making load balancing impossible without manual reconfiguration.

C : InfiniBand switches use Adaptive Routing to dynamically select alternative paths based on real-time congestion information.

D : Load balancing is managed by the Host Channel Adapters (HCAs), and switches play no role in traffic distribution.

Answer: C

Page: 1 / 48

Total 240 Questions | Updated On: Sep 27, 2024

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