Expected Levels. Total hardness in freshwater is usually in the range of 15 to 375 mg/L as CaCO3. Calcium. hardness in freshwater is in the range of 10 to 250 mg/L, often double that of magnesium. hardness (5 to 125 mg/L). Typical seawater has calcium hardness of 1000 mg/L, magnesium.
Part of the Storage management glossary: A physical address is a binarynumber in the form of logical high and low states on an address busthat corresponds to a particular cell of primary storage(also called main memory), or to a particular register in a memory-mapped I/O(input/output) device.
Share. The MAC address represents the physical address of a network device, while the IP address represents a logical address on Internet Protocol networks. A feature of IP, Address Resolution Protocol (ARP) translates IP addresses to MAC addresses.hare. Several Internet services and network utilities support finding Internet Protocol (IP) addresses. Forward IP address lookup converts a server or domain name to an address. Reverse IP address lookup converts the number to the name.