This layer is the protocol layer that transfers data. One could also argue that address resolution protocol, which bridges between the link layer and the network layer and runs on top of the link layer is a link layer protocol. A presentation about the data link layer of the osi reference model. This definition explains the meaning of data link layer and how it enables the. The data link layer ensures that all packets of information are passed on free of errors. Protocol is a set of rules that helps to control data communication.
Data link layer protocols free download as powerpoint presentation. The course comes with full access to download the videos. Hdlc stands for highlevel data link control protocol. The data link layer is the protocol layer in a program that handles the moving of. The data link layer is the protocol layer in a program that handles the moving of data into and out of a physical link in a network. As the second layer in the osi model, the data link layer is very strict on protecting the data that is passed to the network.
This video covers layer 2 data link layer of the osi model as covered by the. Data link layer silvia giordano ica, epfl the data link layeris responsible for transferring a datagram across an individual link. Cisco ccna initial router and switch configuration other data link layer protocols and the physical layer ccna, ccip, mcpit, mcsa. Pdf data link layer is the protocol layer which transfers data between connected networks. Examples of link layer protocols include ethernet, token ring, fddi, and ppp. Data link layer protocols transmission control protocol. In networking and communications, the transmission of a unit of data frame, packet from one node to another. Data communication and computer networks pdf notes dccn. Data bits are encoded, decoded and organized in the data link layer, before they are transported as frames between two adjacent nodes on the same lan or wan. A link isthe communication channels that connect two adjacent hosts or routers.
The data link control layer protocol provides an envelope for the transmission of message blocks over a communication channel. It deals with protocols, flowcontrol, and error control. Click here to visit our frequently asked questions about html5. Data link layer protocols data link layer protocols the data link layer provides service to the network layer above it. Your browser does not currently recognize any of the video formats available. Examples of datalink layer protocols are ethernet ieee 802. The data link layer also determines how devices recover from collisions that. The remote network layer peer should receive the identical message generated by the sender e. The data link layer, or layer 2, is the second layer of the sevenlayer osi model of computer networking. The data link layer provides service to the network layer above it. Spanning tree protocol and rapid spanning tree protocol are the canonical examples.
It makes sure the appropriate physical protocol is assigned to the data. The data link layer is layer 2 in the open systems interconnection architecture model for a set of telecommunication protocols. It detects bit error introduced by the communication channel and delivers only good blocks those without errors. Data communication and computer networks pdf notes dccn notes sorry download link file is not available. Pdf implementation of data link control protocols in wired network. Youget youget is a small commandline utility for downloading media video, audio and images from the web. In network communication, this starts in the second.
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