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多项选择题A national retail chain needs to design an IP addressing scheme to support a nationwide network. The company needs a minimum of 300 sub-networks and a maximum of 50 host addresses per subnet. Working with only one Class B address, which of the following subnet masks will support an appropriate addressing scheme?（）

A、255.255.255.0

B、255.255.255.128

C、255.255.252.0

D、255.255.255.224

E、255.255.255.192

F、255.255.248.0

  • B,E

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