Diver down flag. A diver down flag, or scuba flag, is a flag used on the water to indicate that there is a diver below. Two styles of flag are in use. Internationally, the code flag alfa/alpha, which is white and blue, is used to signal that the vessel has a diver down and other vessels should keep well clear at slow speed.
Familiarize yourself with some friendly network cables and take a closer look at common types of network media, including twisted-pair cable, coaxial cable, fiber-optic cable, and wireless.
All common video cable types are coaxial cables, though that's harder to see in some than in others--for example, s-video cable typically is two mini-coaxial cables combined either in a common outer jacket or a zip-cord type arrangement.ll of the common RG designations apply to various types of coaxial cable. Some people think coax or coaxial cable means antenna cable, or cable with F-connectors, or some such thing, but coax is a much more general classification.