notice-ch9-210(2) - Chapter9 Defining the concept of links...

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Chapter9: Defining the concept of links and nodes? Two categories of links: point-to-point and broadcast links? Lists and briefly describes the services provided by the data-link layer? Defines two sub-layers at the data-link layer? Explains the rationale behind the existence of an addressing mechanism at the data-link layer? Describes three types of link-layer addresses? The Address Resolution Protocol (ARP), which maps the addresses at the network layer to addresses at the data-link layer. T or f or MCQ >>>>>>>>>> I think this coming the word (The Internet) is a combination of networks glued together by connecting devices (routers or switches). If a packet is to travel from a host to another host , it needs to pass through these networks . T Nodes and Links: Communication at the data-link layer is node-to-node . T A data unit from one point in the Internet not needs to pass through many networks (LANs and WANs) to reach another point. F is need .
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