CISA Certified Information Systems Auditor – Question1853 - CISA Certified Information Systems Auditor

Screening router inspects traffic through examining:

A. message header.
B. virus payload
C. message content
D. attachment type
E. None of the choices.

Correct Answer: A

Explanation:

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.