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.
Quick and short answer, both use UDP. DNS also uses TCP for some functions -- such server to server communication (zone transfers) or large queries (IPv6 and otherwise). UDP is the 'default' for the average DNS query (client querying a server for a single record). The use of the layer 4 protocol provides the 16 bit port number, which provide DNS the ability to support multiple connections, etc. DHCP uses UDP ports 67 and 68 - to separate client and server functions. The server listens on port 67, and the client 68. DHCP initially does a layer 2 broadcast, as a method of discovery of the server. This is important because the client has no IP address yet, nor does it know the servers IP.