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.
All the commands that are entered on a router are stored in the current running configuration that is maintained in RAM. This command can be very useful when gathering basic information or troubleshooting because it allows the user to verify the commands that have been administered on the router. You will use the show running-config command in the simulation labs. You will use the show interfaces command in the practice labs.