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1. Define Network? A network is a set of devices connected by physical media links. A network is recursively is a connection of two or more nodes by a physical link or two or more networks connected by one or more nodes. 2. What is a Link? At the lowest level, a network can consist of two or more computers directly connected by some physical medium such as coaxial cable or optical fiber. Such a physical medium is called as Link. 3. What is a node? A network can consist of two or more computers directly connected by some physical medium such as coaxial cable or optical fiber. Such a physical medium is called as Links and the computer it connects is called as Nodes. 4. What is a gateway or Router? A node that is connected to two or more networks is commonly called as router or Gateway. It generally forwards message from one network to another. 5. What is point-point link? If the physical links are limited to a pair of nodes it is said to be point-point link. 6. What is Multiple Access? If the physical links are shared by more than two nodes, it is said to be Multiple Access. |
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