Suggested Answer:B🗳️
A content filter is a type of software designed to restrict or control the content a reader is authorized to access, particularly when used to limit material delivered over the Internet via the Web, e-mail, or other means. Because the user and the OSI layer interact directly with the content filter, it operates at Layer 7 of the OSI model. References: http://en.wikipedia.org/wiki/Content-control_software#Types_of_filtering http://en.wikipedia.org/wiki/OSI_model
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thanhtq00104
6 days, 11 hours ago