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.
The Burj Khalifa, Dubai, UAE â Currently world's tallest building, since it was completed in 2010, is the Burj Khalifa. It stands a massive 198 meters (650 feet) above its nearest competitor. Jeddah Tower, Saudi Arabia â Another threat to the Burj Khalifa's tallest building title is the Jeddah Tower in Saudi Arabia. The tower is currently under construction and due to top out at 1,000 meters at a cost of $1.23 billion.