info 330 assignment 4

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a) Routers are devices that connect different networks and their main role is to direct data packets towards their specific destinations a process referred to as routing. The network layer is the OSI model layer 3 that provides all the services essential for exchange of specific pieces of data between identified hosts or end devices. The network layer uses four basic processes to accomplish the end-to-end transport of the data packets. Routing is one of the four basic processes of the network layer that provides services that direct data packets to their specific destination. However, it is not obligatory that the destination and source hosts be on the same network because the data packets might require traveling over many other different networks

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Surname 1Name:College:Instructor:Date:Assignment 4: Network and Data Link LayersQuestion #1a) Routers are devices that connect different networks and their main role is to direct datapackets towards their specific destinations a process referred to as routing. The networklayer is the OSI model layer 3 that provides all the services essential for exchange ofspecific pieces of data between identified hosts or end devices. The network layer usesfour basic processes to accomplish the end-to-end transport of the data packets. Routingis one of the four basic processes of the network layer that provides services that directdata packets to their specific destination. However, it is not obligatory that the destinationand source hosts be on the same network because the data packets might require travelingover many other different networks. This is where routers come in to guide the datapackets through the particular network to ensure they reach their specific destination.Therefore, the packet will go through 12 interfaces from Host A to Host B. Each routethat a packet takes is called a hop. Since there are 4 routers, the packet will have to routethrough each router until it reaches its destination which is Host B because packets areforwarded to the next router through an assumption that the next router has more networkinformation on its routing table.b) Each router has its routing table to determine the destination address of the packet sent toit. For this reason
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