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DCCN

IPV4

IPv4 The Internet Protocol version 4 (IPv4) is the delivery mechanism used by the TCP/IP protocols. IPv4 is an unreliable and connectionless datagram protocol. It provides no error control or flow control. IPv4 must be paired with a reliable protocol such as TCP. The Figure 20.4 shows the position of IPv4 in the suite. Data […]

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DCCN

Addressing mode

Four levels of addressing mode are used in an internet employing the TCP/IP protocols: physical (link) addresses, logical (IP) addresses, port addresses, and specific addresses. Relationship of layers and addresses in TCP/IP 1. Physical Addresses • The physical address, also known as the link address, is the address of a node as defined by its […]