NCP-AII Question 77
Single answerYou are tasked with setting up a high-performance AI cluster that requires 100Gbps connectivity between NVIDIA DGX nodes. Which cable and transceiver combination would be the most suitable for achieving low latency and high bandwidth in this setup?
- A
QSFP28 transceiver with a Direct Attach Copper (DAC) cable
- B
LC-LC fiber patch cable with a QSFP28 transceiver
- C
SFP+ transceiver with a Cat6 Ethernet cable
- D
QSFP+ transceiver with a Direct Attach Copper (DAC) cable
Show answer and explanation
Correct answer: A
Explanation
To achieve 100Gbps connectivity with low latency and high bandwidth between NVIDIA DGX nodes in a high-performance AI cluster, a QSFP28 transceiver paired with a Direct Attach Copper (DAC) cable is the most suitable choice. QSFP28 supports 100Gbps speeds, and DAC cables are cost-effective, low-latency options for short-distance connections within data centers.
- A. Correct.
QSFP28 transceiver with a Direct Attach Copper (DAC) cable is ideal for short-distance, high-speed connections like 100Gbps in AI clusters. It offers low latency and high bandwidth, which is critical for AI workloads.
- B. Incorrect.
LC-LC fiber patch cables are typically used with optical transceivers for long-distance connections. While they support high speeds, they are unnecessary for short-distance setups like within an AI cluster.
- C. Incorrect.
SFP+ transceivers and Cat6 Ethernet cables are limited to 10Gbps speeds and are not suitable for high-performance AI clusters requiring 100Gbps connectivity.
- D. Incorrect.
QSFP+ transceivers and DAC cables are limited to 40Gbps speeds, which do not meet the requirements of a 100Gbps AI cluster setup.