To separate the addresses used inside the home or business and the ones used for the Internet, the Internet authorities have reserved three sets of addresses as （ ） addresses. （2018年上半年网络管理员考试上午真题）
To separate the addresses used inside the home or business and the ones used for the Internet, the Internet authorities have reserved three sets of addresses as （ ） addresses. （2018年上半年网络管理员考试上午真题）
A.private
B.common
C.public
D.external
参考答案：A
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