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多项选择题Your ISP assigned you a full class B address space. From this, you need at least 300 sub-networks that can support at least 50 hosts each. Which of the subnet masksbelow are capable of satisfying your needs?（）

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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