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.
Types of Ethernet Cables. Ethernet cables normally support one or more industry standards including Category 5 (CAT5) and Category 6 (CAT6) . A crossover cable is a special type of Ethernet cable specially designed for connecting two computers to each other.imitations of Ethernet Cables. A single Ethernet cable, like an electric power cord, can extend only limited distances due to their electrical transmission characteristics. Several different types of RJ-45 connectors exist. One type, designed for use with stranded cables, generally is incompatible with solid cable.