Screening router inspects traffic through examining:
A.
message header.
B.
virus payload
C.
message content
D.
attachment type
E.
None of the choices.
Explanation:
The simplest and almost cheapest type of firewall is a packet filter that stops messages with
inappropriate network addresses. It usually consists of a screening router and a set of rules that
accept or reject a message based on information in the message header.