Most routing protocols have metric structures and algorithms that are not compatible with other protocols. In a network with multiple routing protocols, the exchange of route information and the capability to select the best path across the multiple protocols are critical.elect the Best Path. Administrative distance is the first criterion that a router uses to determine which routing protocol to use if two protocols provide route information for the same destination. Administrative distance is a measure of the trustworthiness of the source of the routing information.
In July 2013, China heralded the opening of the New Century Global Center, an immense 18.9-million-square-foot (1.75 million square meters) structure that many are calling the largest building in the world.
'World's largest building' opens in China. The New Century Global Centre building opens to the public in Chengdu, southwest China's Sichuan province on June 28, 2013, the latest symbol of China's economic boom. The New Century Global Centre is claimed by Chinese officials to be the world's largest standalone structure.. Though Dubai boasts the tallest building in the world, Chengdu in southwest China is now home to what Chinese officials are calling the largest building in the world..