NCP-AII Question 79
Single answerYou are tasked with setting up a high-speed network connection between two NVIDIA DGX systems in a data center. The systems will require a 200 Gbps connection over a short distance (less than 5 meters). Which cable type and transceiver combination would be the most suitable?
- A
Active Optical Cable (AOC) with QSFP56 transceivers
- B
Direct Attach Copper Cable (DAC) with QSFP56 transceivers
- C
Fiber optic cable with QSFP28 transceivers
- D
Ethernet Cat6 cable with RJ45 connectors
Show answer and explanation
Correct answer: B
Explanation
For a 200 Gbps connection over short distances (less than 5 meters), Direct Attach Copper (DAC) cables with QSFP56 transceivers are the most appropriate. They provide high-speed connectivity, are cost-effective, and are specifically designed for short-range data center interconnects. Other options either do not meet the speed requirements or are designed for longer distances.
- A. Incorrect.
Active Optical Cables (AOC) are used for longer distances, typically exceeding 5 meters, and are not the most cost-effective solution for short connections.
- B. Correct.
Direct Attach Copper Cable (DAC) with QSFP56 transceivers is ideal for short distances (less than 5 meters) in high-speed connections such as 200 Gbps. It is also cost-effective and widely used in data centers.
- C. Incorrect.
Fiber optic cables with QSFP28 transceivers are typically used for long-distance connections and are not suitable for the 200 Gbps requirement since QSFP28 supports up to 100 Gbps.
- D. Incorrect.
Ethernet Cat6 cables with RJ45 connectors are not capable of supporting 200 Gbps connections and are typically used for lower-speed Ethernet connections (up to 10 Gbps).