CompTIA Network+ (N10-007) — Question 549

A network technician is configuring a new firewall for a company with the necessary access requirements to be allowed through the firewall. Which of the following should be applied as the LAST rule in the firewall?

Answer options

• A. Secure SNMP
• B. Port security
• C. Implicit deny
• D. DHCP snooping

Correct answer: C

Explanation

The correct answer is C, Implicit deny, which serves as a security measure to block any traffic that is not explicitly allowed by prior rules. Options A, B, and D are specific security measures but do not serve the overall function of denying any unauthorized traffic, which is critical in firewall rule configuration.