After Franklin Roosevelt died in office in April 1945, Eleanor was expected to retire to a quiet, private life. However, by the end of the year she was back in public. America's new president, Harry S. Truman (1884â1972), made her the American representative to the United Nations Commission on Human Rights.
Window: 16 bits The number of data octets beginning with the one indicated in the acknowledgment field which the sender of this segment is willing to accept. Checksum: 16 bits The checksum field is the 16 bit one's complement of the one's complement sum of all 16 bit words in the header and text. If a segment contains an odd number of header and text octets to be checksummed, the last octet is padded on the right with zeros to form a 16 bit word for checksum purposes.
Transport Layer protocols, such as the Transmission Control Protocol (TCP) and the User Datagram Protocol (UDP), specify a source and destination port number in their segment headers. A port number is a 16-bit unsigned integer, thus ranging from 0 to 65535. However, for TCP, port number 0 is reserved and cannot be used. For UDP, the source port is optional and a value of zero means no port. A process associates its input or output channels via Internet sockets, a type of file descriptor, with a transport protocol, a port number and an IP address.