About Grubhub. Grubhub helps you find and order food from wherever you are. How it works: you type in an address, we tell you the restaurants that deliver to that locale as well as showing you droves of pickup restaurants near you. Want to be more specific? Search by cuisine, restaurant name or menu item.
The main purpose of a router is to connect multiple networks and forward packets destined either for its own networks or other networks. A router is considered a Layer 3 device because its primary forwarding decision is based on the information in the Layer 3 IP packet, specifically the destination IP address.
Routers direct traffic from the source to the destination machine. Routers are devices used on a network to direct Internet traffic from the source to the destination. Routers are used in private networks and on the Internet. Routers also function to protect against outside traffic entering an internal network. Routers are able to segment the Internet network from the internal network in a home or business. Routers send packets from the internal network to the Internet cloud..