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Google Earth Outreach is a charity program, through which Google promotes and donates to various non-profit organizations. Beginning in 2007, donations are often accompanied by layers featured in Google Earth, allowing users to view a non-profit's projects and goals by navigating to certain related locations. [92]
The main purpose of a router is to connect multiple networks and forward packets destined either for directly attached networks or more remote 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. When a router ...
Images of some of the first attempts at a large scale map of the internet were produced by the Internet Mapping Project and appeared in Wired magazine. The maps produced by this project were based on the layer 3 or IP level connectivity of the Internet (see OSI model), but there are different aspects of internet structure that have also been mapped.
Diagram of the Layer 1 (physical) and Layer 2 (Data Link) topology of an Internet exchange point (IXP) Diagram of the Layer 3 (network) topology of an Internet exchange point (IXP) Internet traffic exchange between two participants on an IXP is facilitated by Border Gateway Protocol (BGP) routing configurations between them. They choose to ...
Layer Layer 2 Layer 3 (lite) Layer 3 (lite) static routing Layer 3 (lite) static & RIP routing Ports 12 or 24 10/100 ports with 2 proprietary Gb transceiver slots. 24 (fanless) or 48 (incl. fan) 10/100 ports including 2 Dual Personality Ports (Gb or SFPs). G models: 20 or 44 Gb ports with 4 Dual Personality Ports (4 x Gb or SFPs).
The network layer provides the means of transferring variable-length network packets from a source to a destination host via one or more networks. Within the service layering semantics of the OSI (Open Systems Interconnection) network architecture, the network layer responds to service requests from the transport layer and issues service requests to the data link layer.
Create a database of points, enabling generation of navigatable maps with a clickable icon appearing for every location for which there is a Wikipedia article. This has been implemented for NASA World Wind, Google Earth (see below) and Google maps (see below). Serve as a tool for finding Wikipedia articles describing nearby locations.
Provides layer 3 connectivity and routes IP traffic through an Internet service provider’s backbone network to the Internet; A DSLAM collects data traffic from multiple subscribers into a centralized point so that it can be transported to a switch or router over a Frame Relay, ATM, or Ethernet connection.