1) What is a Link? A link refers to the connectivity between two devices. It includes the type of cables and protocols used in order for one device to be able to communicate with the other. 2) What are the layers of the OSI reference model? There are 7 OSI layers: Physical Layer, Data Link Layer, Network Layer, Transport Layer, Session Layer, Presentation Layer and Application Layer. 3) What is backbone network? A backbone network is a centralized infrastructure that is designed to distribute different routes and data to various networks. It also handles management of bandwidth and various channels. 4) What is a LAN? LAN is short for Local Area Network. It refers to the connection between computers and other network devices that are located within a small physical location. 5) What is a node? A node refers to a point or joint where a connection takes place. It can be computer or device that is part of a network. Two or more nodes are needed in order to form a network connectio
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