10 Gigabit Ethernet. 10 Gigabit Ethernet is the latest generation and delivers a data rate of 10 Gbit/s (10,000 Mbit/s), and a fiber optic or twisted pair cable can be used. 10GBASE-LX4, 10GBASE-ER and 10GBASE-SR based on an optical fiber cable can be used to bridge distances of up to 10,000 m (6.2 miles).
Endogamy is the practice of marrying within a specific ethnic group, class, or social group, rejecting others on such a basis as being unsuitable for marriage or for other close personal relationships.
The practice of marrying or requiring to marry within one's own ethnic, religious, or social group. 1995, Isabel Fonseca, Bury Me Standing, Vintage 2007, p. 24: Far from suggesting a demoralized culture, endogamy here seemed the mark of a buoyantly confident group, settled in their skin and not needing outsiders.