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.
RG6 and RG6/U are types of coaxial cable. They are most commonly used to route cable television signals.RG stands for Radio Guide, derived from the original military specifications for coaxial cables used to carry radio waves for communication.Electrically, RG6 and RG6/U cables are identical.G6 and RG6/U are types of coaxial cable. They are most commonly used to route cable television signals.