Free NVIDIA NCP-IB Practice Exam Questions and Answers 2026

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Total 240 Questions | Updated On: Apr 03, 2026

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Question 1

You are configuring an HPC cluster that leverages InfiniBand technology. You aim to achieve optimal performance by fine-tuning Quality of Service (QoS) settings to manage different types of network traffic. Which of the following is the most important factor to consider when configuring QoS for InfiniBand in an HPC environment?

A : Virtual Lanes (VLs) and Service Levels (SLs)

B : MAC Address Table Size

C : Port Mirroring

D : Spanning Tree Protocol (STP) settings

Answer: A

Question 2

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

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

Which of the following correctly describes the role of the HCA in InfiniBand’s connection-oriented (reliable) transport mechanism?

A : HCAs handle flow control and congestion management at the application layer, ensuring no data is lost in transmission.

B : HCAs perform hardware-based packet retransmission at the switch level to ensure reliability in connection-oriented transfers.

C : HCAs are responsible for managing reliable connections through queue pairs (QPs), which enable reliable data transfer between nodes.

D : HCAs manage connection setup and teardown for RDMA, ensuring that each connection is uniquely identified by a Local Identifier (LID).

Answer: C

Question 5

Which feature of InfiniBand makes it particularly suitable for applications like artificial intelligence (AI) and machine learning (ML) workloads?

A : Remote Direct Memory Access (RDMA) for reduced CPU load and fast data transfer

B : High compatibility with legacy Ethernet switches

C : Support for Quality of Service (QoS) to prioritize traffic

D : Built-in firewall and network security features

Answer: A

Page: 1 / 48

Total 240 Questions | Updated On: Apr 03, 2026

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