1. In a hierarchical network the Backhaul segment of the network is the link between the core network, or backbone network, and the subnetworks at the edge of the network

2. Cyberspace refers to the virtual computer world, and more specifically, an electronic medium that is used to facilitate online communication. Cyberspace typically involves a large computer network made up of many worldwide computer subnetworks that employ TCP/IP protocol to aid in communication and data exchange activities.