Cadmium and its congeners are not always considered transition metals, in that they do not have partly filled d or f electron shells in the elemental or common oxidation states. The average concentration of cadmium in Earth's crust is between 0.1 and 0.5 parts per million (ppm).admium and its congeners are not always considered transition metals, in that they do not have partly filled d or f electron shells in the elemental or common oxidation states. The average concentration of cadmium in Earth's crust is between 0.1 and 0.5 parts per million (ppm).
Subnetwork (Subnet) Definition - What does Subnetwork (Subnet) mean? A subnetwork (subnet) is a separate and identifiable portion of an organizationâs network, typically a local area network (LAN) comprised of all the machines on one floor, building or geographical location.
Definition - What does Attached Resource Computer Network (ARCNET) mean? Attached Resource Computer Network (ARCnet) is a type of LAN protocol that provides network services to 255 nodes at data rates of up to 2.5 Mbps. ARCnet is similar to token ring and Ethernet network services. ARCnet was fast, reliable and cheap, and it allowed different transmission systems to be merged and implemented on same network. ARCnet was the first simple networking based solution that provided for all kinds of transmission regardless of the transmission medium or the type of computer. ARCnet was also the first widely available networking system for microcomputers.