About TCP/IP
TCP/IP is a family of protocols that help the internet to operate. Its name comes from its two most well-known protocols: TCP and IP.
Every device that uses TCP/IP must have an IP address, which should be unique at least to its local network. It also needs a network mask (used for dividing big IP networks into smaller networks) that is related to its current network, one or more DNS servers (used for translating an IP address to a human-memorable format and vice versa) and, if you want to communicate with devices beyond your local network, the IP address of a device that will act as the default gateway (a network device that TCP/IP sends a network packet to when it cannot find where else to send it).
Each TCP/IP service, which ...
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