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多项选择题 Refer to the exhibit.Which three statements correctly describe Network Device A？（）

A、With a network wide mask of 255.255.255.128， each interface does not require an IP address.

B、With a network wide mask of 255.255.255.128， each interface does require an IP address on a unique IP subnet.

C、With a network wide mask of 255.255.255.0， must be a Layer 2 device for the PCs to communicate with each other.

D、With a network wide mask of 255.255.255.0， must be a Layer 3 device for the PCs to communicate with each other.

E、With a network wide mask of 255.255.254.0， each interface does not require an IP address.

  • B,D,E

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