When you first log in to a router, how does the router indicate that factory defaults are being used?

When you first log in to a router that is using factory defaults, the router indicates this by displaying a default hostname. The factory default hostname is typically set to "router" or a variation that may include “default” depending on the manufacturer, but the key point is that the hostname reflects that no specific user configuration has been applied.

In this context, the specific choice stating that the router's host name is default aligns with the expected behavior of indicating that the device is still configured with its factory settings. This serves as a clear signal to the user that the device has not yet been personalized or configured for a specific network environment.

The other options do not accurately reflect the typical behavior observed when logging into a router with factory default settings. For example, referring to a hostname such as “Amnesiac” or “Unconfigured” does not correspond to standard factory settings and might confuse the user about the router's operational state. The hostname being "Default" specifically highlights the absence of user-driven configuration changes.