The TCP/IP protocol suite is the lingua franca of the Internet because the Internet services “speak” TCP/IP. These services make the Internet tick by making possible the transfer of mail, news, and Web pages. Each Internet service has its own protocol that relies on TCP/IP for the actual transfer of the information. Each service also has one or more assigned port numbersthat it uses to do whatever it’s designed to do. Here are some well-known Internet services and their associated protocols:DHCP (Dynamic Host Configuration Protocol) is for dynamically configuring TCP/IP network parameters on a computer. DHCP is primarily used to assign dynamic IP addresses and other networking information such as name server, default gateway, domain names that are needed to configure TCP/IP networks. The DHCP...