S7700 and S9700 are both Huawei’s modular campus switches. Compared with S7700, S9700 has the characteristics as follows:

 S7700 and S9700 are both Huawei’s modular campus switches. Compared with S7700, S9700 has the characteristics as follows:
A . S9700 switches provide more slots and more ports
B . S9700 switches provide non-blocking data exchange capabilities
C . S9700 provides provide redundant engines, redundant power supplies and redundant fans
D . S9700 switches provide data center features such as TRILL ratio and FCOE

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Answer: B