Configure RoCE for high-speed, low-latency communication: Practice Questions — NVIDIA Spectrum Networking (NVIDIA-Certified Professional: AI Networking)
Practice Questions: Configure RoCE for High-Speed, Low-Latency Communication These multiple-choice questions are designed to help you prepare for the...
Practice Questions: Configure RoCE for High-Speed, Low-Latency Communication
These multiple-choice questions are designed to help you prepare for the NVIDIA-Certified Professional: AI Networking exam, focusing on configuring RDMA over Converged Ethernet (RoCE) to achieve high-speed, low-latency communication within NVIDIA Spectrum Networking environments.
What is the primary purpose of enabling Priority Flow Control (PFC) when configuring RoCE?
- A) To increase bandwidth by aggregating multiple links
- B) To prevent packet loss by pausing traffic on specific priority classes
- C) To encrypt data packets for security
- D) To route packets across multiple network paths
Correct Answer: B
Explanation: PFC is used to prevent packet loss in lossless Ethernet environments by pausing traffic on specific priority classes, which is critical for RoCE performance that requires lossless transport.
Which version of RoCE requires configuring Explicit Congestion Notification (ECN) to manage network congestion effectively?
- A) RoCE v1
- B) RoCE v2
- C) RoCE v3
- D) RoCE does not support ECN
Correct Answer: B
Explanation: RoCE v2 operates over UDP/IP and supports ECN to signal congestion without dropping packets, enabling better congestion management for low-latency communication.
When configuring RoCE on NVIDIA Spectrum switches, which feature must be enabled to ensure lossless Ethernet behavior?
- A) Jumbo Frames
- B) Priority Flow Control (PFC)
- C) Link Aggregation Control Protocol (LACP)
- D) Spanning Tree Protocol (STP)
Correct Answer: B
Explanation: PFC enables lossless Ethernet by pausing traffic on specific priorities, which is essential for RoCE to maintain low latency and avoid retransmissions.
Which of the following is a key benefit of configuring RoCE with ECN in an AI networking environment?
- A) Increased packet loss to reduce congestion
- B) Early congestion notification to avoid packet drops
- C) Automatic load balancing across multiple switches
- D) Encryption of data for secure transmission
Correct Answer: B
Explanation: ECN provides early congestion notification to endpoints, allowing them to reduce transmission rates before packet loss occurs, which is crucial for maintaining low latency in AI workloads.
Which tool can be used to verify the correct configuration and operational status of RoCE on NVIDIA Spectrum switches?
- A) NVIDIA DOCA
- B) NetQ
- C) NVIDIA Air
- D) WJH
Correct Answer: B
Explanation: NetQ is a network operations tool that provides real-time monitoring and verification of network configurations including RoCE status on NVIDIA Spectrum switches.
What is the role of the SuperNIC when configuring RoCE in NVIDIA Spectrum Networking environments?
- A) It acts as a software firewall
- B) It accelerates networking functions including RoCE offloads
- C) It manages IP address allocation
- D) It provides cloud orchestration services
Correct Answer: B
Explanation: The SuperNIC offloads networking functions such as RoCE processing from the CPU, improving performance and reducing latency in AI networking setups.
Which protocol is essential to configure alongside RoCE to support multi-tenant environments in NVIDIA Spectrum Networking?
- A) BGP-EVPN
- B) OSPF
- C) STP
- D) RIP
Correct Answer: A
Explanation: BGP-EVPN is used to enable multi-tenancy and network segmentation, which complements RoCE configurations in complex AI networking environments.
More in this topic
Ready to test your knowledge?
Put what you've learned into practice with a quick quiz and track your progress.
Test your knowledge →