Purchasing power parity (PPP) is an economic theory that states that the exchange rate between two currencies is equal to the ratio of the currencies' respective purchasing power.
MAC Address Generation. Each virtual network adapter in a virtual machine is assigned its own unique MAC address. Each network adapter manufacturer is assigned a unique three-byte prefix called an Organizationally Unique Identifier (OUI), which it can use to generate unique MAC addresses.
Every computer connected to the Internet has a unique identity. by its IP address (a four-part number string such as 18.72.0.3), in which the first part(s) identify the specific network to which the machine is connected (e.g., 18 refers to the main MIT network).