CompTIA A+ Core 2 (220-1202) — Question 10

A technician is setting up a surveillance system for a customer. The customer wants access to the system's web interface on the LAN via the system’s IP address. Which of the following should the technician use to prevent external log-in attempts from the internet?

Answer options

• A. Port mapping
• B. Subnetting
• C. Static IP
• D. Content filtering

Correct answer: B

Explanation

Subnetting helps to create separate networks, which can prevent external access to the surveillance system by isolating it from the internet. The other options, such as port mapping and static IP, do not inherently provide security against external log-in attempts, while content filtering is more focused on controlling data rather than access.