DATA LINK LAYER WIRED NETWORKS
LINK LAYER ADDRESSING
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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end-to-end
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node-to-node
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host-to-host
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process-to-process
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Detailed explanation-1: -Communication at the data-link layer is node-to-node. A data unit from one point in the Internet needs to pass through many networks (LANs and WANs) to reach another point. Theses LANs and WANs are connected by routers.
Detailed explanation-2: -The data link layer is responsible for the node-to-node delivery of the message. The main function of this layer is to make sure data transfer is error-free from one node to another, over the physical layer. Hence the correct answer is Data Link Layer.
Detailed explanation-3: -Data link layer is responsible for converting data stream to signals bit by bit and to send that over the underlying hardware. At the receiving end, Data link layer picks up data from hardware which are in the form of electrical signals, assembles them in a recognizable frame format, and hands over to upper layer.
Detailed explanation-4: -The data link layer, or layer 2, is the second layer of the seven-layer OSI model of computer networking. This layer is the protocol layer that transfers data between nodes on a network segment across the physical layer.