CompTIA Network+ (N10-007) — Question 61

A user calls the help desk for assistance with setting up a new SOHO router. The user has three employees who all have laptops that need to connect to the wireless network. The users need to have firewall rules allowing access to an internal server, but cannot be configured with static IP addresses. Which of the following BEST describes what the technician should implement?

Answer options

• A. CNAME record in the users' dynamic DNS accounts
• B. Additional lease time for the laptop computers
• C. IP helper relay system for configuration hops
• D. DHCP reservation for the laptops' MACs

Correct answer: D

Explanation

The correct answer is D because DHCP reservation allows the laptops to maintain the same IP addresses based on their MAC addresses while still using dynamic IP allocation. This meets the requirement for access to the internal server through firewall rules without the need for static IP addresses. The other options do not address the issue of maintaining consistent IP addresses for the laptops in a dynamic environment.