A subnetwork, or subnet, is a logical, visible subdivision of an IP network. The practice of dividing a network into two or more networks is called subnetting. Computers that belong to a subnet are addressed with a common, identical, most-significant bit-group in their IP address.
Introduction. Vasco da Gama was born in 1460 to a wealthy Portuguese family in Sines, Portugal. Vascoâs father was also an explorer and was supposed to make the epic journey from Portugal to India that would eventually make his son famous.
On May 20, 1506, the great Italian explorer Christopher Columbus dies in Valladolid, Spain. Columbus was the first European to explore the Americas since the Vikings set up colonies in Greenland and Newfoundland in the 10th century. He explored the West Indies, South America, and Central America, but died a disappointed man, feeling he had been mistreated by his patron, King Ferdinand of Spain. Columbus was born in Genoa, Italy, in 1451. Little is known of his early life, but he worked as a seaman and then a sailing entrepreneur. He became obsessed with the possibility of pioneering a western sea route to Cathay (China), India, and the fabled gold and spice islands of Asia.