CCNA: Cisco Certified Network Associate — Question 1219

Which device permits or denies network traffic based on a set of rules?

Answer options

• A. switch
• B. firewall
• C. wireless controller
• D. access point

Correct answer: B

Explanation

The correct answer is B, as a firewall is specifically designed to monitor and control incoming and outgoing network traffic based on security rules. The other options, such as switches (A), wireless controllers (C), and access points (D), do not serve the primary function of filtering traffic based on rules.