1 foot per nanosecond?
That's the "guaranteed not to exceed" speed of light in free space. In copper, especially in the presence of anything else, "Your mileage may vary, and will probably be lower".
-A. Pedant
That's the "guaranteed not to exceed" speed of light in free space. In copper, especially in the presence of anything else, "Your mileage may vary, and will probably be lower".
-A. Pedant