A network configuration that provides a backbone in a centralized location, to which all subnetworks are attached. A collapsed backbone is implemented in a router or switch that uses a high-speed backplane that can handle the simultaneous traffic of all or most of its ports at full wire speed. network configuration that provides a backbone in a centralized location, to which all subnetworks are attached. A collapsed backbone is implemented in a router or switch that uses a high-speed backplane that can handle the simultaneous traffic of all or most of its ports at full wire speed.
The most densely populated cities. With a population density of 44,500 people per square kilometre, Dhaka, the capital of Bangladesh, is the most crowded city on the planet by quite a distance. According to UN Habitat data, of the top 10 most densely populated cities in the world, six are in Asia, three are in Africa and one is in South America:
Houston, the nation's fourth largest city in terms of population, is the 51st most dense of the 100 most populous cities, registering about 3,500 people per square mile. A story in the October issue of Governing explores how the city became the country's most sprawling major metro area. READ: More urban news. Further north, Dallas is just about as densely populated and is the ninth most populous city. Similar cities include Phoenix (sixth most populous nationally) with a population density of 2,798 people/sq. mile and San Antonio (seventh most populous) with 2,880 people/sq. mile.