Which of the following is the upstream of the computing industry chain?

iBMC provides a wealth of interfaces, which of the following belongs to? (Multiple choice)

Huawei super fusion architecture for different hardware features installed software service called nodes, in a virtualized private cloud scenario, there are MCNA, SCNA, CAN Tri-Service General.
Which of the following statements about MCNA nodes are correct?

When engineers deliver the hyper-converged virtualization scenario built by Huawei E9000 blade servers, they need to use CX310 or CX320 switching boards, through basic frame cascading, and no external switches. A maximum of 4 frames are supported between frames. Two switch boards in the frame are stacked through 40G interface.

Huawei's intelligent edge architecture has full-stack three-dimensional capabilities. Which of the following hardware levels in the intelligent edge architecture do not belong to Huawei products?