Early engraving of Joseph Merrick But Joseph Merrick lived on, firmly believing that his mother's experience with the fairground elephant was the root of his problems. Mary Merrick became a Sunday School
TCP/IP Protocol Architecture. TCP/IP protocols map to a four-layer conceptual model known as the DARPA model , named after the U.S. government agency that initially developed TCP/IP. The four layers of the DARPA model are: Application, Transport, Internet, and Network Interface. Each layer in the DARPA model corresponds to one or more layers of the seven-layer Open Systems Interconnection (OSI) model. Figure 1.1 shows the TCP/IP protocol architecture. Figure 1.1 TCP/IP Protocol Architecture. Network Interface Layer
The TCP/IP Application layer encompasses the responsibilities of the OSI Session, Presentation, and Application layers. TCP/IP Core Protocols The TCP/IP protocol component that is installed in your network operating system is a series of interconnected protocols called the core protocols of TCP/IP. All other applications and other protocols in the TCP/IP protocol suite rely on the basic services provided by the following protocols: IP, ARP, ICMP, IGMP, TCP, and UDP.