题目内容

Whichtwostatementsaretrueofanetworkmask?（）

AsubnetmaskspecifiestheportionofanIPaddressthatisinabinaryformat.
B. AsubnetmaskspecifiestheportionofanIPaddressthatisinadecimalformat.
C. AsubnetmaskspecifiestheportionofanIPaddressthatrepresentsanetworkprefix.
D. AsubnetmaskspecifiestheportionofanIPaddressthatrepresentsnetworkhosts.

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