Layer 7 devices used to prevent specific types of html tags are called:
A.
Firewalls
B.
Content filters
C.
Routers
D.
NIDS
Explanation:
A content filter is a is a type of software designed to restrict or control the content a reader is
authorised 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.