What should be checked first when a laptop connects to a public Wi‑Fi network?

What should be checked first when a laptop connects to a public Wi‑Fi network?

• A. The network's password strength
• B. If the laptop's firewall is enabled
• C. Whether VPN is available
• D. The laptop requires user authentication for file and media sharing

Answer: (D)

When you’re on a public Wi‑Fi network, your main risk is other devices on the same network discovering or accessing your files. The most effective first safeguard is to limit or disable sharing so that any access to your files requires explicit authentication. If the laptop is configured so that file and media sharing requires authentication, it adds a protective barrier even if someone on the network tries to reach your machine. This directly reduces the chance that someone can casually browse or steal data from your device. The other options are still good practices, but they don’t address this immediate risk as directly. The network’s password strength isn’t something you can rely on with public hotspots, firewall status is often already set and won’t by itself prevent others from accessing shared resources, and VPN use, while important for protecting traffic, might not be usable immediately in every public scenario.

When you’re on a public Wi‑Fi network, your main risk is other devices on the same network discovering or accessing your files. The most effective first safeguard is to limit or disable sharing so that any access to your files requires explicit authentication. If the laptop is configured so that file and media sharing requires authentication, it adds a protective barrier even if someone on the network tries to reach your machine. This directly reduces the chance that someone can casually browse or steal data from your device.

The other options are still good practices, but they don’t address this immediate risk as directly. The network’s password strength isn’t something you can rely on with public hotspots, firewall status is often already set and won’t by itself prevent others from accessing shared resources, and VPN use, while important for protecting traffic, might not be usable immediately in every public scenario.