TCP/IP Addressing

TCP/IP is actually a suite of protocols. The one that we are concerned with is the Internet Protocol (IP). Every device connected to the Internet must have an IP address. An IP address is made up of four individual decimal numbers separated by a period. Each of the decimal numbers can range from 0 to 255. The numerical range is determined by the fact that each number is actually a binary octet. An octet is an eight-bit number. Each bit in the octet can be either a 0 or a 1. Each position in the octet is assigned a decimal value. The decimal value for each position can be determined by raising the numeral 2 to the power of the position. Positions are numbered from right to left starting with the number 0 (see Figure 1.4). ...

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