IP addresses. For any host, computer on a TCP/IP
network, a unique id (32 bits in IPv4) written as a
collection of 4 decimal numbers (dotted quad)
between 0 to 255.
Ex. IP address: 132.64.48.56. Every device must
have a unique IP address. All devices pertaining to a
common network must reflect a common network
portion of address that must be registered with the
Internet community provided by some Internet
Service Provider (ISP)
IP address class:
Class A: 0 + 7 network ID bits + 24 host ID bits
Class B: 10 + 14 network ID bits + 16 host ID bits
Class C: 110 + 21 network ID bits + 8 host ID bits
Class D: 1110 + 28 multicast address bits
Address formats:
network. local.local.local (for class A IDs)
network.network.network.local (for class C IDs)
IP address of a device
MAC address (physical ID)
MAC address is a permanently stamped address. IP
address is stored in a configuration file in the local
disk.
